DEAS 852: 2023 
ICS 87.040  
 
© EA C 2023                                                                                                                          Seco nd Edition 2023 
 DRAFT EAST AFRICAN STANDARD  
Air-dried roofing paint — Specification  
EAST AFRICAN COMMUNITY  DEAS 852: 2023 
ii © EAC  2023 – All rights reserved  
 Copyright notice  
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 DEAS 85 2: 2023 
© EAC 2023 – All right s reserved  iii 
 Foreword  
Development of the East African Standards has b een necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged tha t through 
harmonized stan dardization, trade barriers that are encounte red when goods and services are exc hanged 
within the Community w ill be removed.  
The Community has established an East African Standards Committee  (EASC)  mandated to develop and 
issue Ea st African Standards  (EAS ). The Committee is composed of representativ es of the National 
Standards Bodies  in Partner States, together with the representatives from the public and private sector 
organizations  in the community .  
East African Standards are de veloped through  Technical  Committees that are representative of key 
stakeholders including government, ac ademia, consumer groups, priv ate sector and other interested parties. 
Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the 
Partner States. The comments received are disc ussed and incorporated before final ization of standards, in 
acco rdance with the Principles and procedures for development of East African Standards . 
East African Standards are subject to  review, to keep pace with technological advances. Users of the East 
African Standards are therefore expe cted to ensure that they alwa ys have the latest versions of the standards 
they are implementing .  
The committee responsible for this document is Techni cal Committee EASC/TC 070, Paints, vanishes and 
related products . 
This second  edition cancels and replace s the first edition (EAS 852:2016), which has been technical ly revised.  
Attention is drawn to the possibility t hat some of the elements of this document may be subj ect of patent 
rights. EAC shall not be held responsi ble for identifying any or all such pate nt rights . 
 
 FINAL DRAF T EAST AF RICAN STANDARD  DEAS 85 2: 2023 
 
© EAC 2023 – All rights reserved  1 
 Solvent -borne air-dried roofing paint — Specification  
1 Scope   
This Draft East African Standard specifies requirements , sampling and test methods for solvent -borne air-
dried  roofing paint for use on galvanized iron sheet, zinc and zinc alloy  coate d steel . 
2 Norm ative references   
The following documents a re ref erred to in the text in s uch a way t hat some or all of their con tent constitutes 
requirements of this  document. For dated references, only the edition cited applies. For undated referenc es, 
the latest editio n of the referenced document (in cluding any  amend ments) applies.  
ISO 1523, Determination of flash point — Closed cup e quilibrium method   
ISO 1524, Paints, varnishes and printing ink — Determination of fineness of grind    
ISO 2811 (all parts), Paints and va rnishes — Determination of density   
ISO 281 3, Paints and varnishes — Determination of gloss value at 20 degrees, 60 de grees and 85 degrees   
ISO 2884 -2, Paints and varnishes — Determination of viscosity using rotary viscometers — Part 2 : Disk or 
ball viscom eter operated at a specified speed   
ISO 32 48, Paints and varnishes — Determination of the effect of heat   
ISO 32 51, Paints varnishes and plastics — Determination of non - volatile matter content   
ISO 3856 -1, Paints and varnishes — Dete rmination of soluble  metal content — Part 1: Determination of 
lead c ontent — Flame atomic absorption spectrometric method and dithiz one s pectrophotometric method   
ISO 6504 -3, Paints and varnishes — Determination of hiding power — Part 3: Determination of  contrast 
ratio of li ght coloured paints at a fixed spreading ra te  
ISO 9117 -3, Paints and varnishes — Drying test — Part 3: Surface d rying  test using Ballotini  
ISO 15528,  Paints, varnishes and raw materials for paints and varnishes — Sampling   
ISO 17132,  Paints and varnishes  ― T-bend test   
ISO 21207, Corrosion test i n arti ficial atmospheres — Accelerated corrosion test involving altern ate exposure 
to corrosion promoting gases, neutral salt spray and drying  
ISO 4618:2014 , Paints and varnishes — Terms and d efinitions  
ISO 6503 :1984, Paints and Varnishes - Determinatio n of Tot al Lead - Flame Atomic Absorption Spectrometric 
Method  
ISO 9117 -4, Paints and varnishes — Drying tests — Part 4: Test using a mechanical recorde  DEAS 85 2: 2023 
2 © EAC  2023 – All rights reserved  
 3 Terms and defin itions   
For the purposes  of this standard, terms and definitions given in I SO 4618 shall apply .  
ISO and IEC maintain terminological  datab ases for use in s tandardization at  the following addresses:  
— ISO Online browsing platf orm: available at http://ww w.iso.org/obp   
4 Requirements  
4.1 General requiremen ts  
4.1.1 Composition of the paint  
The paint shall be made of a suitable resin with pigments that are fast to light and other  ingredients  as may be 
necessary to pro duce a paint that satisfies the r equirements of this standard.  
4.1.2 Condition of the paint in the container   
The pai nt sha ll be free from gel, coarse particles, foreign matter  and skin; and shall be in such a condition that 
at the time of use by stirring , produces a homogenous product of uniform consistency  
4.1.3 Applic ation   
4.1.3.1  Priming  
Before application of the roof paint, the su bstrate shall suitably be primed as per the instructions of the 
manufacturer  
4.1.3.2  Top coat  
4.1.3.2.1  The paint shall, after re commended thinning, be s uitable for application by any suita ble ap plicator.  
4.1.3.2.2  The resulting film shall not show pigment flocculation, coarseness or other undesirable 
characteris tics.  
4.2 Specific requirements   
Solvent -borne air-dried  roofing paint shall comply with t he speci fic requirements given in Table 1 when tested 
in accordance with the test m ethods therein.  DEAS 85 2: 2023 
© EAC 2023 – All right s reserved  3 
 Table 1 — Specific requirements for Solvent -borne air dried roofin g paint  
S No.  Parameter  Requirement  Test method  
i) Drying times at 25 ºC ± 2 ºC, h, max.:   
 Surface drying  time  
 Hard drying time    
5 
24 ISO 9117 -3  
ISO 9117 -4 
ii) Finen ess of  grind, µm, max.  25 ISO 1524  
iii) Chemical resistance   To pass the test  Annex A  
iv) Flexibility  To pass the test  ISO 17132  
v) Dry opacity, %, min.  90 ISO 6504 -3  
vi) Gloss at 60°, %, min .  70 
All partner states to 
carry out research  to 
have Data to support 
lowing of this figure    ISO 2813  
vii) Specific gravity. at 25 °C ± 2°C  0.97 – 1.30 ISO 2811  
viii) Non-volatile matter, %, m/m, min.  50 ISO 3251  
ix) Flow  times, ISO cup No. 4  135 ± 5  
All partner states to 
carry out research  to 
have Data to support 
lowing of this figure    ISO 2431  
x) Total lead content, ppm, max.  90 ISO 6503  
xi) Heat resistance  To pass the test  ISO 3248  
xii) Flash  point, °C, min.  32 ISO 1523  
xiii) Accelerated weathering  test, min.  3 years equivalen t  ISO 21207  
 
5 Storage stability  
The solvent -borne air-dried  roofing  paint when stored in the original sealed contain er under room temperature 
shall meet all t he requirements for a period of at least  one year from the dat e of manufacture .  
6 Packag ing 
The solvent -borne air-dried  roofing  paint shall be package d in a suitable container that prev ents it from 
deterioration during storage, transportation and normal handling  DEAS 85 2: 2023 
4 © EAC  2023 – All rights reserved  
 7 Labelling  
7.2.1 The labelling shall be either in English, Kiswahili or French or in combination as agreed between the 
manuf acturer and the supplier. Any other l anguage shall be optional.  
7.2.2 The paints shall be packaged in containers that are legibly and indelibl y marked with the following 
informat ion: the name of the product as “solvent -borne air-dried roofing paints”;  
a) manufacturer’s name and  physical addresses /or registered t rade mark;  
b) indication of colour/colour code;  
c) date of manufacture;  
d) net content;  
e) batch/code number;   
f) coun try of origin;  
g) expiry date or best before date;  
h) instructions for use a nd safety  precaution s.   
i) storage conditions ; and   
j) disposal instructions.  
8 Sampling  
Sampling shall be done in accordance with ISO 15 528.  DEAS 85 2: 2023 
© EAC 2023 – All right s reserved  5 
 Annex  A 
(normative)  
 
Chemical resistance test  
A.1 General  
This method is based on the immersion method and the test is ca rried out at 25 ºC ± 2 ºC. Test pieces are 
preferably individually immersed in the test liquid, particularly when using liquids of high electrical conductivit y 
in which electrolytic effects could be of importance.  In certain cases, however, where the n ature of the test 
liquid is unaf fected by the test pieces, it may be convenient to immerse several pieces in a single tank.  
The test pieces shall be at least 30 m m from the sides and bottom of the tank and shall be at least 30 mm 
apart. The test pieces sha ll be electrically insulated fro m their supports . 
A.2 Apparatus  
A.2.1 Panels , mild steel panels of dimensions 150 mm ×100 mm × 3 mm prepared and solvent cleaned   
A.2.2 Tank, constructed from corrosion resistant materials. A s uitable beaker can also be use d if severa l 
samples are no t tested together.  
A.2.2 Supports for test specimen , construction of non -conductive materials to hold the specimen  30 mm 
apart and 30  mm from the bottom and sidewalls of the tank  
A.3 Reagents  
A.3.1  Sulphuric acid, 10 % , v/v.  
A.3.2  Distilled water  
A.4 Preparation and coating of panels  
Prepare and clean the pane ls as in A.1.1. After preparation paint both faces of the panel and protec t the 
edges. To paint the faces, apply  the paint at 12 0 µm wet film t hickness. This will dry t o about 60 µm film 
thickness. Dry the coated panels at 25 °C and 65 % ± 2 % relative hum idity for seven days.  
A.5 Procedure  
A.5.1 Place a sufficient am ount of r eagent in a suitable vessel (tank) to partially immerse the test piece to 
100 m m length. Immerse the test piece in an approximately vertical position using suitable supports. Immerse 
for 48 h.  
A.5.2 Cover  the container f or the duration of the tes t to mini mize loss of reagent by evaporation or 
splashing.  
A.5.3 At the end of the spec ified immersion period, wash the test piece thoroughly with running water. 
Remove any residue liquid from the surface by dabbi ng with a suitab le absorbent cloth or pape r and exa mine 
the test piece immediately for any signs of deterioration, colour change, blistering, etc. Remove the coating 
from the panel and examine for any signs of attack.  DEAS 85 2: 2023 
6 © EAC  2023 – All rights reserved  
 A.6 Results  
Solvent -borne A ir-dried roofing paint shall be resistant to 10 % v/v H2SO 4 after 24 h . DEAS 85 2: 2023 
© EAC 2023 – All right s reserved  7 
 Bibliography  
EAS 852:20 16, Air-dried roofing paint — Specification  
 EAS 85 2: 2023   
 
© EAC 2023 – All rights reserved