KENYA STANDARD  FDKS  2129 -
1:2023 
ICS 91.100.01  
2nd   Edition  
  
 © KEBS 202 3  
 Tile adhesive for marble, 
granite,  ceramic and porcelain  
- Part 1: Requirements,  
assessment and verification of 
constancy of performance,  
classification  and marking  
 
  
TECHNICAL COMMITTEE REPRESENTATION  
 
The following organizations were represented on the  Technical Committee:  
1. Bamburi Cement  
2. Drychem Kenya Solutions Ltd.  
3. East African Portland Cement Company Plc  
4. Homalime  
5. Institute of Quantity Surveyors of Kenya  
6. Institution of Engineers of Kenya  
7. Kenya Builders & Concrete Company Ltd  
8. Micro and small Enterprises  Authority  
9. Ministry of Transport, Infrastructure, Housing, Urban Development and Public Works  
10. Mlima Construction  
11. Mombasa Cement Ltd.  
12. Multimedia University of Kenya  
13. National Cement Limited  
14. Royal Automation Systems  
15. Savannah Cement  
16. SIKA Kenya  
17. Technical Univer sity of Kenya  
18. Kenya Bureau of Standards — Secretariat  
 
REVISION OF KENYA STANDARDS  
In order to keep abreast of progress in industry, Kenya Standards shall be regularly reviewed.  
Suggestions for improvements to published standards, addressed to the Managi ng Director, 
Kenya Bureau of Standards, are welcome.  
 
© Kenya Bureau of Standards,202 3 
Copyright. Users are reminded that by virtue of Section 25 of the Copyright Act, Cap. 130 of 2001 of the Laws of 
Kenya, copyright subsists in all Kenya Standards and exc ept as provided under Section 25 of this Act, no Kenya 
Standard produced by Kenya Burea u of Standards may be reproduced, stored in a retrieval system in any form or 
transmitted by any means without prior permission in writing from the Managing Director.FDKS 2129 -1:2023 
 
 
  
 
Tile adhesive for ceramic, marble, 
granite, and porcelain  - Part 1: 
Requirements,  assessment and 
verification of constancy of 
performance,  classification  and 
marking  
 
Kenya Bureau of Standards, Popo Road, Off Mombasa Road,  
P.O. Box 54974 - 00200,  Nairob i, Kenya  
 +254 020 6948000, + 254 722202137, + 254 734600471  
 info@kebs.org  
 @KEB S_ke  
 kenya bureau of standards (kebs)   
Foreword  
 
This Kenya Standard was prepared by the Cement Technical Committee under the guidance of 
the Standards Projects Com mittee, and it is in accordance with the procedures of the Kenya 
Bureau of Standards.  
 
 
During  the preparat ion of this standard,  reference was made to  EN 12004:2007  Adhesives for 
tiles — Requirements,  evaluation of  conformity,  classification and  designatio n. 
 
Tile adhesive for ceramic, marble, granite, and porcelain  - Part 
1: Requirements,  assessment and verification of constancy of 
performance,  classification  and marking  
 
1 Scope  
 
This Kenya Stand ard is applicable to the following three types of adhesives fo r ceramic , marble, 
granite, and porcelain  tiles, i.e.  cementitious ones for internal and external tile installations, 
dispersion and reaction resin ones for  internal  tile installations,  on walls and floors.  
 
This Kenya Standard gives the terminology concer ning the products, working methods, application  
properties,  etc, for tile adhesives.  
 
This Kenya  Standard  specifies  the performance  requirements  for the adhesives  for ceramic,  marble, 
granite, an d porcelain  tiles. 
 
It also specifies the appurtenant test me thods, assessment and verification of constancy of 
performance  (AVCP),  as well  as classifi cation,  designation  and marking  of adhesives  for tiles. 
 
This Kenya Standard does not provide criteria or r ecommendations for the design and installation of        
tiles. 
 
Tile adhesives  may also be used  for other  types  of tiles (natural  and agglomerated  stones, etc.),  if 
they do not adversely  affect  these  materials.  
 
2 Normative  reference s 
 
The following documents , in whole or in part, are normatively referenced in this document 
and are  indispensable  for its application.  For dated  references,  only the edition  cited  applies.  
For undated  references,  the latest  edition  of the referenced  document  (including  any 
amendme nts) applies.  
 
KS 2129 -2:2017,  adhesives  for tiles — Part 2: Test methods  
EN 12808 -1, Grouts  for tiles — Part 1: Determination  of chemical  resistance  of reaction  resin  
mortars  
EN 13238, Reaction to fire tests for building products — Conditioning p rocedures and 
general rules for  selection  of substrates  
EN 13501 -1, Fire classification of construction products and building elements — Part 1: 
Classificatio n using  data from reaction  to fire  tests  
EN 14411,  tiles — Definition,  classification,  characteris tics, assessment  and verification  
of constancy  of performance  and marking  
 
3 Terms  and definitions  
For the purposes  of this document,  the following  terms  and definitions  apply.  
 
3.1 General  
3.1.1   
thin bed method  
method  used  for installing  tiles onto a plane  surface  with an adhesive  
 
Note  1 to entry: The  adhesive  is usually  applied w ith a trowel  to obtain  a layer and then combed  with a notched  trowel  to 
achieve  the right  thickness and planarity.  
 
3.1.2   
fixing  surface  
plane  rigid surface  upon  which the  tile is fixed   
 
3.1.3  
 wall and floor  tiles 
tiles made  out of or natural  and agglomerated  stones 
 
3.2  
Tiles  
3.2.1   
vitrified tiles  
non water absorbent tiles  
 
3.2.2    
marble  
a natural stone product qu arried from the earth. It gets a distinctive shine from the polishing 
process it goes through. Avai lable in multiple finishes and a wide variety of colours  
 
3.2.3   
granit e  
a natural stone denser than marble. Granite is molten lava that never rose above the sur face of the 
earth. It is extremely durable and holds a polish. Available in polished, honed or flam ed (rough) 
surfaces  
 
3.2.4    
porcelain  
a hard, white, translucent cera mic made by firing a pure clay and then glazing it with variously 
colored fusible materials   
 
3.2.5    
ceramic  
refers to the range of materials created by firing clay at a high temperature. In the  context of 
mosaics, this would include traditional ceramic tiles,  pottery, and terracotta. Unglazed ceramic 
tends to be porous and brittle, but cinca (a hig h-fired unglazed porcelain) is very hardwearing and 
water resistant. Technically, brick is also a c eramic material.  
 
 
3.3 Products  
3.3.1   
  cementitious  adhesive  
mixture  of hydraulic  binding  agents,  aggregates,  and organic  additives,  mixed  with water  or 
liquid  admi x just before  use 
 
3.3.2   
  dispersion  adhesive  
ready  to use mixture  of organic  binding  agent(s)  in the form of an aqueous  polymer  dispersion,  
organic   additives  and miner al fillers  
 
3.3.3   
reaction  resin  adhesive  
one or more  component  mixture  of synthetic  resin,  mine ral fillers  and organic  additives  in which  
hardening  occurs by   chemical  reaction  
 
3.4 Tools  and working  methods  
3.4.1   
  notched  trowel  
 toothed  tool, which  makes  it possible  to apply  the adhesive  as a series  of ribs of a uniform  
thickness   onto the fixing  surface  and/or  the reverse  face of the tile  
 
 
3.4.2   
  floating  method  
  adhesive  applied  only to the fixing  surface,  usually  with a trowel  to obtain  a uniform  layer  and 
then      combed  with a  notched  trowel  
 
3.4.3   
  floating  and buttering  method  
  adhesive  applied  to the fixing  surface  and to the reverse  of the tiles 
 
3.5 Application  properties  
3.5.1   
shelf life 
time of storage  under  stated  conditions  during  which  an adhesive  is expected  to maintain  its 
working      properties  
 
3.5.2   
maturing  time 
interval  between  the time when  the cemen titious  adhesive  is mixed  and the time when  it is     
 ready  for  use 
 
3.5.3   
pot-life 
maximum  time interval  during  which  the adhesive  can be used  after mixing  with approp riate liquid 
 component   
 
 
 
3.5.4   
open time  
maximum  interval after application at  which  tiles can be e mbedded in the applied 
adhesive  and meet   the specified  tensile  adhesion  strength requirement  
 
3.5.5   
wetting  capability  
ability  of a combed  adhesive  layer  to wet the tile 
 
3.5.6   
slip 
downward  movement  of a tile applied  to a combed  adhesive  layer  on a vertical  or inclined  surface  
 
3.5.7   
adjustability  
maximum  time interval  after which  the tile’s position  in the adhesive  layer  can be adjusted  
without         significant  loss of  adhesion  strength  
 
3.6 Final  properties  
3.6.1   
adhesion  strength  
maximum  strength  per unit surface  area which can be measured  by shear  and tensile  testing  
 
3.6.2   
deformability  
capacity  of a hardened  adhesive  to be deformed  by stresses  between  the tile and 
the fixing  surface without  damage  to the installed  surface  
 
3.6.3   
transverse  deformation  
deflection  recorded  at the centre  when  a beam  of hardened  adhesive  is subjected  to three  point  
loading 
 
3.7 Characteristics  
3.7.1   
basic  characteristics  
characteristics  that an adhesive  absolutely  has to have  
 
3.7.2  Optional characteristics   
3.7.2.1  additional  characteristic  
characteristic  for specific  service conditions  where  enhanced  levels  of performance  are required  
 
3.7.2.2   
speci al characteristic  
characteristic  of the adhesive  which  provide  further  information  abou t its general  performance   
 
 
4 Product  characteristic  
4.1 Cementitious  adhesives  (C) 
Characteristics of  the normal setting cementitious adhesive for tiles shall comply with th e 
requirements specified in Table 1 a, and characteristics of the fast-setting  cementit ious adhesive 
for tiles with those  in Table  1 b. 
 
When needed for special service condition(s) of  cementitious adhesive for tiles, its optional  
characteristics  shall comply with the  requirements  specified  in Tables 1  c, 1 d and/or  1 e. 
 
The amount of water  and/or liquid admixes required for preparing the cementitious adhesive shall 
be the same  for all tests.  
 
Table  1 — Requirements  for cementitious  adhesives  (C) 
 
Basic  characteristics  
Basic adhesive  
Characteristic  Requirement  Test Method  
Initial tensile adhesion strength  ≥ 0.5 N/mm2 KS 2129 – 
2:2017, 8.3  
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
1 a Normal  setting  adhesives  (c1) 
Characteri stic Requirement  Test Method  
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
Initial  tensile  adhesion  strength  ≥ 0.5 N/mm2  
 
 KS 2129 – 
2:2017,  8.3 Tensile  adhesion  
immersion  strength   after    
water  ≥ 0.5 N/mm2 
Tensile  adhesion  strength  after heat ageing  ≥ 0.5 N/mm2 
Tensile  adhesion  strength  after freeze – thaw  
cycles  ≥ 0.5 N/mm2 
Open  time:  tensile  adhesion  strength  ≥ 0.5 N/mm2 after not 
less than 20 min  KS 2129 – 
2:2017,  8.1 
1 b Fast setting  adhesives  (C1F)   
Characteristic  Requirement  Test Method  
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
Early  tensile  adhesion  strength  ≥ 0.5 N/mm2 after not more  than 6 h  KS 2129 – 
2:2017,  8.3 
Open  time:  tensile  adhesion  strength  ≥ 0.5 N/mm2 after not less than 10 min  KS 2129 – 
2:2016,  8.1 
All other  requirements as  in Table  1 a  KS 2129 – 
2:2017 , 8.3 
Optional  characteristics  
1 c Special  characteristics   
Characteristic  Requirement  Test Method  
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
Extended open time (E): 
tensile  adhesion  strength  ≥ 0.5 N/mm2 after not less than 30 min  KS 2129 – 
2:2017,  8.1  
Deformable adhesive (S1): 
transverse  deformation  ≥ 2.5 mm  and < 5 mm  
 KS 2129 – 
2:2017,  8.6 Highly deformable adhesive (S2): 
transverse  deformation:  ≥ 5 mm 
1 d Additional  characteristics  (C2)  
Characteristic  Requirement  Test Method  
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
High initial  tensile  adhesion  strength  ≥ 1 N/mm 2  
 
 KS 2129 – 
2:2017,  8.3 High tensil e adhesion  strength  after water  
immersion  ≥ 1 N/mm 2 
High tensile  adhesion  strength  after heat  
ageing  ≥ 1 N/mm 2 
High tensile  adhesion  strength  after freeze – 
thaw  cycles  ≥ 1 N/mm 2 
1 e FAST  SETTING  ADHESIVES  (C2F)   
Characteristic  Requirement  Test Method 
Slip (T)- to be mandatory for all tiles  ≤ 0.5 mm KS 2129 – 
2:2017,  8.2 
Early  tensi le adhesion  strength  ≥ 0.5 N/mm2 after not more  than 6 h KS 2129 – 
2:2017,  8.3 
Open  time:  tensile  adhesion  strength  ≥ 0.5 N/mm2 after not less than 10 min KS 2129 – 
2:2017,  8.1 
All other  requirements as  in Table  1 d KS 2129 – 
2:2017,  8.3 
 
 
4.2 Dispersion  adhes ives (D) 
Characteristics of the dispersion adhesive for tiles shall comply with the requirements specified  in 
Table 2 a. When needed for special service condition(s)  of dispersion adhesive for tiles, its  
optional  characteristics shall  comply  with the  requi rements  specified  in Tables 2  b and/or  2 c. 
 
Table  2 — Requirements  for Dispersion  Adhesives  (D) 
 
2 a Basic  characteristics  (D1) 
Characteristic  Requirement  Test 
Method 
Initial  shear  adhesion  strength  ≥ 1 N/mm2  KS 2129 –
2:2017,  
Shear  adhesion  strength  after heat ageing  ≥ 1 N/mm2 8.4 
Open  time:  tensile  adhesion  strength  ≥ 0.5 N/mm2 after not less than 
20  KS 2129 –
2:2017,  
min 8.1 
Optional  
characteristics  
2 b Spec ial characteristics   
Characteristic  Requirement  Test 
Metho
d 
Slip (T) ≤ 0.5 mm  KS 
2129 –
2:2017 
, 
8.2 
Extended  open  time (E): ≥ 0.5 N/mm2 after not less than 30  KS 
2129–
2:2017,  
tensile  adhesion  strength  min 8.1 
2 c Additional  characteristics  (D2)  
Char acteristic  Requirement  Test 
Method  
Shear adhesion  strength  after water  ≥ 0.5 N/mm2  
immersion    KS 
2129–
2:2017,  
Shear  adhesion  strength  at elevated  ≥ 1 N/mm2 8.4 
temperature    
4.3 Reaction  resin  adhesives  (R) 
Characteristics of the reaction resin adhesi ve for tiles shall comply with the re quirements  specified 
in Table 3  a. When  needed  for special service condition(s)  of reaction  resin adhesive  for tiles, its 
optional characteristics shall comply with the requirements specified in Tables 3 b  and/or  3 c.  
 
 
 
Table  3 — Requirements  for reactio n resin  adhesives  (R) 
 
3 a  Basic  characteristics  (R1) 
Characteristic  Requirement  Test Method  
Initial  shear  adhesion  strength  ≥ 2 N/mm2  
 KS 2129 – 
2:2017,  8.5 Shear  adhesion  
immersion  strength  after water  ≥ 2 N/mm 2 
Open  time:  tensile  adhesion  strength  ≥ 0.5 N/mm 2 after not less than 20 
min  KS 2129 – 
2:2017,  8.1 
Optional  characteristics  
3 b  Special  characteristics   
Characte ristic  Requirement  Test Method  
Slip (T) ≤ 0.5 mm  KS 2129 – 
2:2017,  8.2 
3 c  Additional  characteristics  (R2)  
Characteristic  Requirement  Test Method  
Shear  adhesion  
shock  strength  after thermal  ≥ 2 N/mm2  KS 2129 – 
2:2017,  8.5 
4.4 Reaction  to fire 
4.4.1  General  
 
The reaction  to fire performance  of adhesive  for tiles shall be declared  as the class  in accordance  
with EN 13501 -1, based  on one of the following  options:  
a) either without the need for testing (CWT), according to 4.4.2, or without the need for further 
testin g (CWFT),  according  to 4.4.3,  when  meeting  the requirements,  specified  therein,  or 
otherwis e 
 
b) based  on results  of the test method(s),  relevant  to specific  reaction  to fire class,  and carried  
out in accordance  with the  standard(s),  referred  to in EN 13501 -1, as specified  in 4.4.4.  
 
 
4.4.2  Adhesives  classified  as Class  A1 without the  need  for testing  (CWT) 
 
The reaction to fire performance of a given type of adhesive for tiles may be declared as Class  A1 
without the need for testing, pr ovided that it contains not more than 1 % of homogeneously  
distributed  organic material,  by mass  or volume  (whichever  is the most  onerous).  
 
4.4.3  Adhesives  classified  as class  E without  the need  for further  testing  (CWFT)  
 
The react ion to fire performance of a gi ven type of adhesive for tiles may be declared as class  
given  in Table 4   when  meeting  the requirements  for specific  type of adhesive,  specified  therein.   
 
 
 
Table  4 — Classes  of reaction -to-fire performance  for adhesives  for tiles 
 
Product  a Organic  content  
(% in weight)  Maximum  layer  
thickness  
(mm)  
Cementitious  adhesives  in accordance  with  KS 
2129 -1 < 20 20 
Dispersion  adhesives   in   accordance   with  
KS 2129 -1 < 40 5 
Reaction  resin  adhesiv es in accordance  with  KS 
2129 -1 < 50 5 
4.4.4  Adhesives  classified  according  to the test results  
 
The reaction  to fire performance  of a given  type of adhesive  for tiles shall be declared  as 
class  (including  the additional  classification  for smoke  production  and flaming  
droplets/particles, if any), determined on a base of results of the tests carried out on the 
specimens  prepared according to 4.4.4.2 and 4.4.4.3, in accordance with the relevant 
methods, which are specified  for considered  class  in the standards re ferred  in EN 13501 -
1. 
 
The specimens of the adhesive, which are to be tested, shall be sampled, prepared and  
conditioned  according  to EN 13238  under  the following  test conditions:  
 
— substrate:  paper -faced  gypsum  plaster  board;  
 
— conditioning:  28 days,  (23 ± 2) °C and  (50 ±  5) % relative  humidity;  
 
— number  of specimen:  6. 
 
In addition, the test specimen shall be prepared as follows for the following reaction to fire  
classes:  
 
a) for class E  or EFL and class  F or FFL: 
 
— apply  the adhesive  with a  notched  trowel  10 mm  × 10 mm, notches at  20 mm 
centres;  
 
b) for class (A2,  B, C or D) or (A2 FL, BFL, CFL or DFL): 
 
— apply  the adhesive  with a  notched  trowel  10 mm ×  10 mm, notches at  20 mm 
centres;  
 
— position  and align  tiles, classified  as group  BIa according  to EN 14411,  with 
facial dimen sions  (50 ± 1) mm × (50 ± 1) mm into  the adhesive;  
 
— place  the tiles 5 mm apart.  
4.5 Resistance  to chemical  attack  
The resistance  to chemical  attack  of the reaction  resin  adhesive  for tiles shall be 
determined  in accordance  with EN 12808 -1. 
 
NOTE  1 The resistan ce to chemical  attack  is relevant  for the reaction  resin  adhesives  for tiles only.   
 
 
 
NOTE 2  For the resistance  to chemical  attack  of these  products  there  is neither  indication  of applicable  chemical  
agent(s)  nor of threshold  level.  
 
The test med ia shall consist of the media to which the chemical resistant materials are to be 
exposed in  service and the test conditions temperature, concentration, etc.) shall simulate the 
anticipated service  and exposure  conditions  as closely  as possible.  
 
4.6 Release  of dangero us substances  
Materials  used  in products  shall not release  any dangerous  substances  in excess  of the maximum  
permitted levels specified in relevant NEMA regulations.   
 
National regulations on dangerous substances may require verification and decl aration on release, 
and sometimes content, when construction products covered by this standard are placed on those 
markets.  In the absence of Kenya harmoni zed test methods, verification and declaration on 
release/content  should  be done  taking  into account  national  provisions in  the place  of use. 
 
5 Testing,  assessment  and sampl ing methods  
Testing and assessment methods and requirements for sampling shall be as set out in Clause 4 of 
this document.  
 
6 Assessment  and verification  of constancy  of performance  (AVCP ) 
6.1 General  
The compliance of the adhesives for tiles with the requiremen ts of this standard and with the  
performances  declared  by the manufacturer  in the DoP shall be demonstrated  by: 
determination  of the product -type on the base  of type testing;  
 
— factory  production  control  by the manufacturer,  including  product  assessment.  
 
The manufacturer shall always retain the overall control and shall have the necessary means to 
take responsibility  for the conformity  of the product  with its declared  performances.  
 
6.2 Type  testing  
6.2.1  General  
 
All performances related to characteristics included in this standard shall be determined when the  
manufacturer intends to declare the respective performances unless the standard gives provisions 
for declaring them without performing test s (e.g. use of previously existing data, CWFT and 
conventionally  accept ed performance).  
 
Assessment previously performed in accordance with the provisions of this standard, may be 
taken into  account provided that they were made to the same or a more rigoro us test method, 
under the same  AVCP system on the same product or produ cts of similar design, construction and 
functionality, such  that the results are  applicable  to the product  in question.  
 
For the purposes of assessment, adhesives for tiles may be group ed into families, where it is 
considered  that the results  for one or more characteristics  from any one product  within  the family  
are representative  for that same  characteristics for  all products within  that same  family. 
Products  may be grouped  in different  families  for different  characteristics.  
Reference  to the assessment  method standards  should  be made  to allow  the selection  of a 
suitable  representative  sample.  
 
In addition,  the determination  of the product  type shall be performed  for all characteristics  included  
in the standard  for which the  manufacturer  declares  the perfor mance:  
 
⎯ at the beginning  of the production  of a new or modified  adhesive  for tiles (unless  a 
member  of the same  product  range);  or 
 
⎯ at the beginning  of a new or modified  method  of produ ction  (where  this may affect  
the stated  properties);  or 
 
⎯ they shall be repeated  for the appropriate  characteristic(s),  whenever  a change  occurs  in 
the adhesive  for tiles design,  in the raw material  or in the method  of production  (subject  
to the definition  of a family),  which  would  affect  significantly  one or more  of the 
chara cteristics.  
 
Where components (e.g. cement) are used whose characteristics have already been determined 
by the  component supplier on the basis of conformity with other product standards , these 
characteristics need  not be re -assessed to demonstrate complian ce with the Kenya Standard. The 
specifications of these  components  shall be documented.  
 
Products  bearing  regulatory  marking  in accordance  with appropriate  harmonized  Kenya  
specificatio ns may be presumed to have the performances declared in the DoP, althou gh this does 
not replace the responsibility on the tileadhesives manufacturer to ensure that the tileadhesives  as 
a whole  is correctly  manufactured  and its component  products  have  the declared  performance  
values.  
 
6.2.2  Test samples,  testing  and compliance  crite ria 
 
The number of samples of tile  adhesives and the testing method to be tested/assessed shall be  in 
accordance  with Table  5.  
 
Table  5 — Number  of samples  to be tested  and compliance  criteria  
 
Characteristic  Requirement  Assessment  method  No. of  
samples  Complian
ce 
criteria  
Open  time:  tensile  adhesion  
strength  Clause 4   KS 2129 –2:2017,  8.1, 1 Table 1a 
of Clause 
4 
Slip Clause 4   KS 2129 –2:2017,  8.2 1 Table 1c 
of Clause 
4 
Initial  tensil e adhesion  strength  (cementitious  adhesives)  Clause 4   KS 2129 –2:2017,  8.3 1 Table 1a 
of Clause 
4 
Early  tensile  adhesion  
strength  (fast setting  
cementitious adhesives)  Clause 4   KS 2129 –2:2017,  8.3 1 Table 1b 
of Clause 
4 
Tensile  adhesion  strength  
after water immersion  
(cementitious  adhesives)  Clause 4   KS 2129 –2:2017,  8.3 1 Table 1a 
of Clause 
4 
Tensile  adhesion  strength  
after heat ageing  (cementitious 
adhesives)  Clause 4   KS 2129 –2:2017,  8.3 1 Table 1a 
of Clause 
4 
Tensile  adhesion  strength  
after freeze – thaw  cycles  
(cementitious  adhesives)  Clause 4   KS 2129 –2:2017,  8.3 1 Table 1a 
of Clause 
4 
Transverse  deformation  
(cementitious  adhesives)  Clause 4   KS 2129 –2:2017,  8.6 1 Table 1c 
of Clause 
4 
Open  time (dispersion  
adhesives)  Clause 4   KS 2129 –2:2017,  8.1 1 Table 2a 
of Clause 
4 
Slip (dispersion  adhesives)  Clause 4   KS 2129 –2:2017,  8.2 1 Table 2b 
of Clause 
4 
Initial  shear  adhesion  strength  (dispersion  adhesives)  Clause 4   KS 2129 –2:2017,  8.4 1 Table 2a 
of Clause 
4 
Shear  adhesion  strength  
after heat agein g (dispersion  
adhesives)  Clause 4   KS 2129 –2:2017,  8.4 1 Table 2a 
of Clause 
4 
Shear  adhesion  strength  
after water  immersion  
(dispersion  adhesives)  Clause 4   KS 2129 –2:2017,  8.4 1 Table 2c 
of Clause 
4 
Shear  adhesion  strength  at 
elevated  temperature  
(dispe rsion  adhesives)  Clause 4   KS 2129 –2:2017,  8.4 1 Table 2c 
of Clause 
4 
Open time (reaction  resin  
adhesives)  Clause 4   KS 2129 –2:2017,  8.1 1 Table 3a 
of Clause 
4 
Slip (reaction  resin  adhesives)  Clause 4   KS 2129 –2:2017,  8.2 1 Table 3b 
of Clause 
4 
Initial  shear  adhesion strength  
(reaction  resin  adhesives)  Clause 4   KS 2129 –2:2017, 8.5 1 Table 3a 
of Clause 
4 
Shear  adhesion  strength  after 
water  immersion  Clause 4   KS 2129 –2:2017,  8.5 1 Table 3a 
of Clause  
4 
Shear  adhesion  strength  after 
thermal  shock  Clause 4  KS 2129 –2:2017,  8.5 1 Table 3c 
of Clause 
4 
Reaction  to fire Clause 4  EN 13501 –1 1   
 
 
6.2.3  Test reports  
 
The results of the determination of the product type shall be documented in test reports. All test 
reports  shall be retained by the manufacturer for at  least 10 years after the last date of production 
of the  adhesives  for tiles to  which they  relate.  
 
6.2.4  Shared  other  party  results  
 
A manufacturer  may use the results  of the product  type determination  obtained  by someone  else 
(e.g. by another manufacturer, as a common service to manufacturers, or by a product developer), 
to justif y his own declaration of performance regarding a product that is manufactured according to 
the same  design (e.g. dimensions) and with raw materials, constituents and manufacturing 
meth ods of the same  kind,  provided  that: 
— the results are known to be valid f or products with the same essential characteristics relevant 
for the product  performance;  
 
— in addition  to any information  essential  for confirming  that the product  has such  same  
perfor mances related to specific essential characteristics, the other party wh o has carried out 
the determination of the product type concerned or has had it carried out, has expressly 
accepted (by  licence, contract, or any other type of written consent) to tran smit to the 
manufacturer the results  and the test report to be used for the latter’s product type 
determination, as well as information  regarding  production  facilities  and the production  
control  process  that can be taken  into account  for FPC;  
 
— the manufact urer using  other  party  results  accepts  to remain  responsible  for the product 
having  the declared  performances and  he also: 
 
a) ensures that the product has the same characteristics relevant for performance as 
the one that  has been subjected to the determinati on of the product type, and that 
there are no significant  differences  with regard  to production  facilities  and the 
production  control  process  compared  to that used  for the product  that was subjected  
to the determination  of the product  type,  and 
 
b) keeps avai lable a copy of the determination of the product type report that also 
contains the  information  needed  for verifying  that the product  is manufactured  
according  to the same  design  and with raw  materials,  constituents  and 
manufacturing  methods  of the same  kind. 
 
 
6.3 Factory  production  control  (FPC)  
 
6.3.1  General  
 
The manufacturer shall establish, document and maintain an FPC system to ensure that the 
products  placed  on the market  comply  with the declared  performance  of the essential  
characteristics.  
The FPC system sh all consist of procedures, regular inspections and tests and/or assessme nts 
and the  use of the results  to control  raw and other  incoming  materials  or components,  
equipment,  the production  process and  the product.  
 
All the elements, requirements and provisi ons adopted by the manufacturer shall be 
documented in a  systematic  mann er in the form of written  policies and  procedures.  
This factory production control system documentation shall ensure a common understanding of 
the evaluation  of the constancy  of perfor mance  and enable  the achievement  of the required  
product  performances an d the effective  operation of  the production control system  to be 
checked.  Factory  production  control  therefore  brings  together  operational  techniques  and all 
measures  allowing  maintena nce and control  of the compliance  of the product  with the declared  
perfo rmances  of the essential  characteristics.   
 
 
 
In case  the manufacturer  has used  shared  product  type results,  the FPC shall also include  the 
appropriate  documentation  as foreseen  in 6.2.4. 
 
6.3.2  Requirements  
6.3.2.1  General  
 
The manufacturer is responsible for organizin g the effective implementation of the FPC system in 
line with the content  of this product  standard.  Tasks  and responsibilities  in the production  control  
organization  shall be documente d and this documentation  shall be kept up-to-date.  
 
The responsibility, authority and the relationship between personnel that manages, performs or 
verifies  work affecting product constancy, shall be defined. This applies in particular to personnel 
that nee d to initiate actions preventing product non -constancies from occurring,  actions in case of 
non-constancies  and to identify  and register  product  constancy  problems.  
 
Personnel  performing  work affecting  the constancy  of performance  of the product  shall be 
competent  on the basis  of appropriate  education,  training,  skills  and experience  for which  records  
shall be maintained.  
In each  factory  the manufacturer  may delegate  the action  to a person  having  the necessary  
authority  to: 
identify  procedures  to demonstrat e constancy  of performance  of the product  at appropriate  stages;  
 
— identi fy and record  any instance  of non-constancy;  
 
— identify  procedures  to correct  instances  of non-constancy.  
 
The manufacturer  shall draw  up and keep  up-to-date documents  defining  the factory production  
control. The manufacturer's documentation and procedures should be appropriate to the product 
and manufacturing  process.  The FPC system  should  achieve  an appropriate  level of confidence  in 
the constancy  of performance  of the product.  This involves:  
 
a) the preparation of documented procedures and instructions relat ing to factory production 
control  operations, in accordance with the requirements of the technical specification to which 
reference is  made;  
 
b) the effective  implementation  of these  procedures  and instructions;  
 
c) the recording  of these  operations  and their results;  
d)  
e) the use of these results to correct any deviations, repair the effects of such deviations, treat 
any resulting instances of non -conformity and, if necessary, revise the FPC to rectify the 
cause of non - constancy  of performance.  
 
Where subcontractin g takes place, the manufacturer shall retain the overall control of the product 
and ensure that he receives all the information that is necessary to fulfil his responsibilities 
accordi ng to this  Kenya  Standard.  
 
If the manufacturer has part of the product designed, manufactured, assembled, packed, 
processed  and/or labelled by subcontracting, the FPC of the subcontractor may be taken into 
account, where  appropriate  for the product  in question.  
 
The manufacturer  who subcontracts  all of his activities  may in no circumstances  pass  the above  
responsibilities  on to a subcontractor.  
 
6.3.2.2  Equipment  
6.3.2.2.1  Testing   
All weighing, measuring and testing equipment shall be calibrated and regularly inspected 
acco rding to  documented  procedures,  frequencies and  criteria.  
 
6.3.2.2.2  Manufacturing  
 
All equipment  used in the manufacturing process shall be regularly inspected and maintained to 
ensure  use, wear  or failure  does  not cause  inconsistency  in the manufacturing  process.  
Inspections  and maintenance  shall be carried  out and recorded  in accordance  with the 
manufacturer’s  written  procedures  and the records  retained  for the period  defined  in the 
manufacturer's  FPC procedures.  
 
6.3.2.3  Raw materials  and components  
 
The specifications o f all incoming raw materials and components shall be documented, as shall 
the inspectio n scheme  for ensuring  their compliance.  In case  supplied  kit components  are used,  
the constancy of performance system of the component shall be that given in the appropr iate 
harmonized  technical  specification  for that component.  
 
6.3.2.4  Traceability  and marking  
Individual  product  batches  shall be identifiable  and traceable  with regard  to their production  
origin.  The manufacturer shall have written procedures ensuring that proces ses related to affixing 
traceability  codes  and/or  markings are  inspected  regularly.  
 
6.3.2.5  Controls  during  manufacturing  process  
 
The manufacturer  shall plan and carry  out production  under  controlled  conditions.  
 
6.3.2.6  Product  testing  and evaluation  
The manufacturer s hall establish procedures to ensure that the stated values of the characteristics 
he declares are maintained. The characteristics, the test methods and the minimum frequencies 
shall be as  specified  in Table  6.  
 
 
 
Table  6 — Production  control  - Test method s and minimum  FPC frequency  
 
Characteristic  Test method  Minimum FPC  
frequency  d 
Open  time: tensile  adhesion  strength   KS 2129 –2:2017,  8.1 A 
Slip  KS 2129 –2:2017,  8.2 A 
Normal  Setting  Adhesives  - Initial  tensile  adhesion  
strength  (cementitious  adhesives)   KS 2129 –2:2017,  8.3 A 
Fast Setting  Adhesives  - Early  tensile  adhesion  
strength  (fast setting  cementitious adhesives)   KS 2129 –2:2017,  8.3 A 
Initial  shear  adhesion  strength  (dispersion  adhesives)   KS 2129 –2:2017,  8.4 A 
Initial  shear  adhesion  strength  (reaction  resin  
adhesives)   KS 2129 –2:2017,  8.5 A 
Tensile  adhesion  strength  after condi tioning  
(cementitious  adhesives)   KS 2129 –2:2017,  8.3 B 
Shear  adhesion  strength  after conditioning  
(dispersion  adhesives)   KS 2129 –2:2017,  8.4 B 
Shear  adhesion  strengt h after conditioning  (reaction  
resin  adhesives)   KS 2129 –2:2017,  8.5 B 
Transverse  deformation   KS 2129 –2:2017,  8.6 B 
Reaction  to fire a - (CWT or  CWFT)  Test method(s)  b  
C 
- tested  EN 13501 –1 c 
 
a For uses  subject  to the reaction  to fire regulations o nly. 
b Appropriate  test/assessment  method(s)  to check  compliance  with the requirements  relevant  for 
application  of CWT  or CWFT  cases (see  4.4.2  and 4.4.3,  respectively).  
c Test method(s), which are specified for considered class in the standards referred in 
EN 13501 –1. d Minimum FPC  frequency:  
A means  at least  one test for every  1000  tonnes,  with a minimum  of one time per year and a 
maximum  of one time per month,  
B means  at least  one test per year for production  below  2500  tonnes/y  and two tests  per year for 
produc tion over 2500  tonnes/y.  
C means  no direct  testing.  However,  the composition  shall be checked  at regular  intervals.  
6.3.2.7  Non-complying  products  
 
The manufacturer shall have written procedures which specify how non -complying products shall 
be dealt with. Any such  events shall be recorded as they occur and these records shall be kept for 
the period  defined  in the manufacturer’s written  procedures.  
Where the product fails to satisfy the acceptance criteria, the provisions for non -complying 
products  shall apply, the necessary corrective action(s) shall immediately be taken and the 
products or batches  not complying  shall be isolated  and properly  identified.  
Once  the fault has been  corrected,  the test or verification  in question  shall be repeated.   
 
 
 
The results  of controls and tests  shall be properly  recorded.  The product  description,  date of 
manufactur e, test method adopted, test results and acceptance criteria shall be entered in the 
records  under  the signature  of the person  responsible  for the control/test.  
 
With regard to any control  result  not meeting  the requirements  of this Kenya  Standard,  the 
corrective  measures  taken  to rectify  the situation  (e.g. a further  test carried  out, modification  of 
manufacturing  process,  throwing  away  or putting  right of product)  shall be indicated  in the records.  
 
6.3.2.8  Corrective  action  
 
The manufacturer shall have documente d procedures that instigate action to eliminate the cause 
of non-conformities  in order  to prevent  recurrence.  
 
6.3.2.9  Handling,  storage  and packaging  
 
The manufacturer shall ha ve procedures providing methods of product handling and shall provide  
suitable  storage  areas preventing  damage  or deterioration.  
 
6.3.3  Product  specific  requirements  
 
The FPC system  shall address  this Kenya  Standard  and ensure  that the products  placed  on 
the market comply  with the  declaration  of performance.  
 
The FPC system  shall include  a product  specific  FPC,  which  identifies  procedures  to demonstrate  
compliance  of the product  at appropriate  stages,  i.e.: 
a) the controls  and tests to be carried  out prior to and/or  during  manufacture  according  to 
a frequency  laid down  in the FPC test  plan,  
and/or  
 
b) the verifications  and tests  to be carried  out on  finished  products  according to  a frequency  
laid down  in the FPC test  plan.  
 
If the manufacturer uses only finished product s, the operations under b) shall lead to  an 
equivalent  level of compliance  of the produ ct as if FPC had  been  carried  out during  the production.  
 
If the manufacturer carries out parts of the production himself, the operations under b) may be 
reduced  and par tly replaced by operations under a). Generally, the more parts of the production 
that a re carried  out by the manufacturer,  the more  operations  under  b) may be replaced  by 
operations under  a). 
 
In any case the operation shall lead to an equivalent level of compliance of the product as if FPC 
had been  carried  out during  the production.  
 
NOTE D epending on the specific case, it can be necessary to carry out the operations referred to under a) and  b), only the 
operations  under  a) or only those under b).  
 
The ope rations under a) refer to the intermediate states of the product as on manufacturing 
machines  and their adjustment, and measuring equipment etc. These controls and tests and their 
frequency shall  be chosen based on product type and composition, the manufac turing process and 
its complexity, the  sensitivity  of product  features  to variations  in manufacturing  parameters etc.  
 
The manufacturer shall establish and maintain records that provide evidence that the production 
has been sampled and tested. These record s shall show clearly whether the production has 
satisfied the  defined  acceptance  criter ia and shall be available  for at least  ten years.   
 
 
6.3.4  Initial  inspection  of factory  and of FPC 
 
Initial inspection of factory and of FPC shall be carried out when the pro duction process has been  
finalized and in operation. The factory and FPC documentation shall be assessed to verify that the  
requirements  of 6.3.2  and 6.3.3 are  fulfilled.  
 
During  the inspection  it shall be verified:  
a) that all resources necessary for the ach ievement of the product characteristics 
included in this  Kenya  Standard  are in place  and correctly  implemented;  
and 
b) that the FPC -procedures in accordance with the FPC documentation are 
followed in practice;  and 
c) that the product  complies  with the product  type samples,  for which  compliance  
of the product  performance  to the DoP has been  verifie d. 
 
All locations where final assembly or at least final testing of the relevant product is performed, shall 
be assessed to verify that the above conditions a) to c) are  in place and implemented. If the FPC 
system  covers more than one product, production l ine or production process, and it is verified that 
the general  requirements are fulfilled when assessing one product, production line or production 
process, then the  assessment of the general requirements does not need to be repeated when 
assessing the FPC  for another  product,  production  line or production  process.  
 
All assessments  and their results  shall be documented in  the initial  inspection  report.  
 
6.3.5  Continuous  surveil lance  of FPC 
 
Surveillance of the FPC shall be undertaken once per year. The surveillan ce of the FPC shall 
include a  review of the FPC test plan(s) and production processes(s) for each product to 
determine if any changes  have been made since the last asses sment or surveillance. The 
significance of any changes shall be  assessed.  
 
Checks  shall be made  to ensure  that the test plans  are still correctly  implemented  and that the 
production  equipment  is still correctly  maintained  and calibrated  at appropriate  time intervals.  
 
The records of tests and measurement made during the production process an d to finished 
products  shall be reviewed to ensure that the values obtained still correspond with those values for 
the samples  submitted to the determination of the prod uct type and that the correct actions have 
been taken for  non-compliant  products.  
 
6.3.6  Proc edure  for modifications  
 
If modifications are made to the product, production process or FPC system that could affect any 
of the  product characteristics declared accordi ng to this standard, then all the characteristics for 
which the  manufacturer declares p erformance, which may be affected by the modification, shall be 
subject to the  determination  of the product  type,  as described  in 6.2.1.  
 
Where relevant, a re -assessment  of the factory and of the FPC system shall be performed for 
those  aspects,  which  may be affected  by the modification.  
 
All assessments  and their results  shall be documented  in a report.   
 
 
6.3.7  One-off products, pre -production products (e.g. prototypes) and pr oducts produced 
in very  low quantity  
 
The tiles adhesives  produced  as a one-off, protot ypes  assessed  before  full production  is established,  
and products  produced  in very low quantities shall  be assessed  as follows.  
 
For type assessment,  the provisions  of 6.2.1, 3rd paragraph  apply,  together  with the 
following  additional  provisions:  
— in case  of prototypes,  the test samples  shall be representative  of the intended  future  
production  and shall be selected  by the manufacturer;  
— on request  of the manufacturer,  the results of the assessment  of prototype  samples  
may be included  in a certificate  or in test reports issued  by the involved  third party.  
                 The FPC system of one -off products and products produced in very low quantities shall 
ensure that raw  materials and/or  components  are sufficient  for production  of the product.  The 
provisions  on raw materials and/or components shall apply only where appropriate. The 
manufacturer shall maintain  records  allowing  traceability  of the product.  
 
In the initial  asses sment  of the factory  and FPC it shall be verified:  
a) that all resources necessary for the  achievement of the product characteristics included in this  
Kenya  Standard  will be available,  and 
b) that the FPC-procedures  in accordance  with the FPC-documentation  will be implemented  and 
followed  in practice,  and 
c) that procedures are in place to demonstrat e that the factory production processes can 
produce a  product complying with the requirements of this Kenya standard and that the 
product will be  the same as the samples  used for the determination of the product type, for 
which compliance with  this Kenya  Standard  has been  verified.  
 
Once  series  production  is fully established,  the provisions  of 6.3 shall apply.  
 
7 Classification  and designation  
Adhesives  for tiles are class ified into one of three  types,  according  to the definitions  given  in 
3.2: 
C Cementitious  adhesive  
D Dispersion  adhesive  
R Reaction  resin  adhesive  
For each type it is possible to have different classes, related to the different 
characteristics, according to  Tables 1, 2 and 3. These  classes are designated  with the 
following  abbreviations:  
1 normal  adhesive  
2 improved  adhesive  (meets  the requirements  for all the additional  characteristics)  
F fast setting  adhesive  
T adhesive  with reduced  slip 
E adhesive  with extended  open time 
S1 deformable  adhesive  
S2 highly  deformable  adhesive   
 
 
 
The designation  of the adhesive  comprises  the symbol  of the type (C, D or R), 
followed  by the abbreviation  of the class  or classes it  belongs to.  
Table  7 describes  the designation  of tile adhesives  which  shall be used.  
Table  7 — Classification,  designation  and description  of adhesives  for tiles 
 
DESIGNATION  DESCRIPTION  
TYPE  CLASS  
C 1 Normal  setting  cementitious  adhesive  
C 1F Fast setting  cementitious  adhesive  
C 1T Normal  setting  cementit ious adhesive  with reduced  slip 
C 1E Normal  setting  cementitious  adhesive  with extende d open  time 
C 1S1 Normal  setting,  deformable  cementitious  adhesive  
C 1S2 Normal  setting,  highly  deformable  cementitious  adhesive  
C 1TS1  Normal  setting,  deformable  cementitious  adhesive  with reduced  slip 
C 1TS2  Normal  setting,  highly  deformable  cementit ious adhesive  with reduced  slip 
C 1ES1  Normal  setting,  deformable  cementitious  adhesive  with extended  open  time 
C 1ES2  Normal  setting,  highly  deformable  cementitious  adhesive  with extended  open  time 
C 1TE Normal  setting  cementitious  adhesive  with reduce d slip and extended  open  time 
C 1TES1  Normal  setting  deformable  cementitious  adhesive  with reduced  slip and extended  
open  time 
C 1TES2  Normal setting highly deformable  cementitious adhesive with reduced slip and  
extended  open  time 
C 1FT Fast setting  cementitious  adhesive  with reduced  slip 
C 1FE Fast setting  cementitious  adhesive  with extended  open  time 
C 1FS1  Fast setting  deformable  cementitious  adhesive  
C 1FS2  Fast setting  highly  deformable  cementitious  adhesive  
C 1FTE  Fast setting  cementitious  adhe sive with reduced  slip and extended  open  time 
C 1FTS1  Fast setting  deformable  cementitious  adhesive  with reduced  slip 
C 1FTS2  Fast setting  highly  deformable  cementitio us adhesive  with reduced  slip 
C 1FES1  Fast setting  deformable  cementitious  adhesive  with extended  open  time 
C 1FES2  Fast setting  highly  deformable  cementitious  adhesive  with extended  open  time 
C 1FTES1  Fast setting  deformable cementitious  adhesive  with reduced  slip and  extended  open  
time 
C 1FTES2  Fast setting  highly  deformable  cementitio us adhesive  with reduced  slip and 
extended  open  time 
C 2 Improved  cementitious  adhesive  
C 2F Improved  fast setting  cementitious  adhesive  
C 2T Improved  adhesive  with reduced  slip 
C 2E Improved  cementitious  adhesive  with extended  open  time  
C 2S1 Improve d deformable  cementitious  adhesive   
 
 
 
DESIGNATION  DESCRIPTION  
TYPE  CLASS  
C 2S2 Improved  highly  deformable  cementitious  adhesive  
C 2TS1  Improved  deformable  cementit ious adhesive  with reduced  slip 
C 2TS2  Improved  highly  deformable  cementitious  adhesiv e with reduced  slip 
C 2ES1  Improved  deformable  cementitious  adhesive  with extended  open  time 
C 2ES2  Improved  highly  deformable  cementitious  adhesive  with extended  open  time 
C 2TE Improved  cementitious  adhesive  with reduced  slip and extended  open  time 
C 2TES1  Improved  deformable  cementitious  adhesive  with reduced  slip and extended  open  
time 
C 2TES2  Improved  highly  deformable  cementitious  adhesive  with reduced  slip and extended  
open  time 
C 2FT Improved  fast setting  cementitious  adhesive  with reduced  slip 
C 2FE Improved  fast setting  cementitious  adhesive  with extended  open  time 
C 2FS1  Improved  fast setting  deformable  cementitious  adhesive  
C 2FS2  Improved  fast setting  highly  deformable  cementitious  adhesive  
C 2FTE  Improved  fast setting cementitious  adhesive  with reduced slip  and extended  open  
time 
C 2FTS1  Improved  fast setting  deformable  cementitious  adhesive  with reduced  slip 
C 2FTS2  Improved  fast setting  highly  deformable  cementitious  adhesive  with reduced  slip 
C 2FES1  Improved  fast setting  deforma ble cementitious  adhesive  with extended  open  time 
C 2FES2  Improved  fast setting  highly  deformable  cementitious  adhesive  with extended  open  
time 
C 2FTES1  Improved  fast setting  deformable cementitious  adhesive  with reduced slip  and 
extended  open  time 
C 2FTES2  Improved  fast setting  highly  deformable  cementitious  adhesive  with reduced  slip 
and extended  open  time 
D 1 Normal  dispersion  adhesive  
D 1E Normal  dispersion  adhes ive with extended  open  time 
D 1T Normal  dispersion  adhesive  with reduced  slip 
D 1TE Normal  dispersion  adhesive  with reduced  slip and extended  open  time 
D 2 Improved  dispersion  adhesive  
D 2E Improved  dispersion  adhesive  with extended  open  time 
D 2T Improved  dispersion  adhesive  with reduced  slip 
D 2TE Improved  dispersion  adhesive  with reduced  slip and extended  open  time 
R 1 Normal  reaction  resin  adhesive  
R 1T Normal  reaction  resin  adhesive  with reduced  slip 
R 2 Improved  reaction  resin  adhesive   
R 2T Improved  reaction  resin  adhesive  with reduced  slip KS 2 129-1:2023   
 
© KEBS 202 3– All rights reserved   
 8 Marking  and labelling  
Products complying with the requirements of this Kenya Standard shall be clearly 
marked with the  following  information:  
 
a) name  of the product;  
b) field of application (internal or exter nal tile installation, on wall or floor, etc. as per 
table 7).  
c)  Comment at the fr ont of bag “ for proper use follow instructions at the back”  
d) manufacturer’s  mark  and place  of origin;  
e) batch number , shelf  life and conditions  of storage;  
f) number  of this KS an d date year of issue;  
g) type of adhesive  according  to Clause  7 (using  symbols  given  in Table  7); 
h) instructions  for use: 
— mix proportions  (where  applicable);  
— maturing  time (where  applicable);  
— pot life; 
— mode  of application;  
— open  time;  
— delay  for grouting  and for opening  to traffic (where  applicable);  
 
 
This information  shall be marked  on the packaging  and/or  on the product’s  technical  data sheet.  
In the designation of an adhesive, information about special properties may be included 
when the  product  is intended  for use in specific applications.  
 
Where regula tory marking provisions require information on some or all items listed in 
this clause, the  provisions of this clause concerning those common items are deemed to 
be met and the information  needs  not be repeated  for the purpose  of this clause.