DRAFT UGANDA STANDARD DRAFT UGANDA STANDARD  
  DUS EAS 852 
First  Edition  
2015-mm-dd 
 
 Reference number  
DUS EAS 852: 2015 
© UNBS 201 5 
  
Air-dried roofing paint — Specification  
 DRAFT UGANDA STANDARDDUS EAS 852: 2015 
ii                © UNBS 2015 - All rights reserved 
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
responsible for its correct application  
© UNBS 2015 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from UNBS. 
Requests for permission to reproduce this document should be addressed to 
The Executive Director 
Uganda National Bureau of Standards 
P.O. Box 6329 
Kampala 
Uganda 
Tel: 256 41 505 995 
Fax: 256 41 286 123 
E-mail: unbs@infocom.co.ug  
Web: www.unbs.go.ug  
 DRAFT UGANDA STANDARDDUS EAS 852: 2015 
© UNBS  2015 - All rights reserved                iii National foreword 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Cooperatives established under Cap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co-
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO). 
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders. 
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
This Draft Uganda Standard, DUS EAS 852: 2015, Air-dried roofing paint  — Specification , is identical with  and 
has been reproduced from an East African  Standard , EAS 852: 2015, Air-dried roofing paint  — Specification , 
and is being proposed for adoption  as a Uganda Standard.  
Wherever the words, “ East African Standard" appear, they should be replaced by "Uganda Standard." 
 
  DRAFT UGANDA STANDARD FDEAS 852: 2015 
ICS 87.040  
© EAC 2015                                                                                                                              First Edition 2015 
 
FINAL DRAFT EAST AFRICAN STANDARD 
 
Air-dried roofing paint — Specification  
EAST AFRICAN COMMUNITY  DRAFT UGANDA STANDARDFDEAS 852: 2015  
ii © EAC  2015  – All rights reserved  
 Copyright notice 
This EAC document is copyright-protected by EAC. While the reproduction of this document by 
participants in the EAC standards development process is permitted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced, stored or transmitted in any form for 
any other purpose without prior written permission from EAC. 
Requests for permission to reproduce this document for the purpose of selling it should be addressed 
as shown below or to EAC’s member body in the country of the requester:  
© East African Community 2015  — All rights reserved 
East African Community  
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Reproduction for sales purposes may be subject to royalty payments or a licensing agreement. 
Violators may be persecuted 
 DRAFT UGANDA STANDARDFDEA S 852: 2015 
© EAC 2015  – All rights reserved  iii 
 Foreword 
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African Standards.   
The Committee is composed of representatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circulated to stakeholders through the National Standards Bodies in the Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community. 
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
FDEAS 852 was prepared by Technical Committee EASC/TC 070, Paints, vanishes and related products . 
 DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFINAL DRAFT EAST AFRICAN STANDARD  FDEAS 852: 2015  
 
© EAC 2015  – All rights reserved  1 
 Air-dried roofing paint — Specification  
1 Scope 
This Final 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 coated steel. 
2 Normative references 
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including any amendments) applies. 
ISO 1523, Determination of flash point — Closed cup equilibrium method  
ISO 1524, Paints, varnishes and printing ink — Determination of fineness of grind   
ISO 2811 (all parts), Paints and varnishes — Determination of density  
ISO 2813, Paints and varnishes — Determination of glos s value at 20 degrees, 60 degrees and 85 degrees  
ISO 2884-2, Paints and varnishes — Determination of viscosity using rotary viscometers — Part 2: Disk or ball 
viscometer operated at a specified speed  
ISO 3248, Paints and varnishes — Determination of the effect of heat 
ISO 3251, Paints varnishes and  plastics — Determination of non - volatile matter content  
ISO 3856-1, Paints and varnishes — Determination of “soluble“ metal content —  Part 1: Determination of lead 
content — Flame atomic absorption spectrometric method and dithizone spectrophotometric method  
ISO 6504-3, Paints and varnishes — Determination of hiding power — Part 3 : Determination of contrast ratio of 
light coloured paints at a fixed spreading rate  
ISO 9117- 3, Paints and varnishes — Drying test — Part 3: Surface drying 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 in artificial atmospheres — Accelerated corrosion test involving alternate exposure 
to corrosion promoting gases, neutral salt spray and drying DRAFT UGANDA STANDARDFDEAS 852: 2015  
2 © EAC  2015  – All rights reserved  
 3 Requirements 
3.1 General requirements 
3.1.1 Composition 
The paint shall be made of a suitable resin with pigments that are fast to light and other ingredients as may b e 
necessary to produce a paint that satisfies the requirements of this standard. 
3.1.2 Condition in the contain er 
3.1.2.1  The paint shall: 
a) have no irritating or offensive odour; and 
b) be free from lumps, skins,  
3.1.2.2  The condition of the paint shall be such that settling, if any, shall be  easily incorporated by stirring . 
3.1.3 Application properties 
3.1.3.1 Priming  
3.1.3.1.1 For a new roof, use an etching solution before the application of a zinc-based primer, followed by 
a top coat. 
3.1.3.1.2 For a weathered roof of about six months, which has not rusted, use a zinc- based primer 
followed by a top coat. 
3.1.3.2 Top coat  
3.1.3.2.1 The paint shall, after recommended thinning, be suitable for application by brush, spray, roller or 
any suitable applicator . 
3.1.3.2.2 The resulting film shall not show pigment flocculation, coarseness or other undesirable 
characteristics. 
3.2 Specific requirements  
3.2.1  Chemical resistance  
When tested in accordance with Annex A, air dried roofing paint shall be resistant to 10 % H 2SO 4 after 24 h. 
3.2.2  Flexibility 
When tested in accordance with ISO 17132, air dried roofing paint shall pass the test on a 12-mm mandrel. 
3.2.3  Additional specific requirements 
Roofing paint shall comply with the requirements given in Table 1 when tested in accordance with the test 
methods therein. DRAFT UGANDA STANDARDFDEA S 852: 2015 
© EAC 2015  – All rights reserved  3 
 Table 1 — Specific requirements for air dried roofing 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 
(ii)  Finen ess of grind , µm, max. 25 ISO 1524  
(iii)  Dry o pacity,  %, min . 90 ISO 6504 -3 
(iv)  Gloss at 60 °, %, min.  70 ISO 2813  
(v)  Specific  gravity. at 25 °C ± 2°C  0.97 – 1.30 ISO 281 1 
(vi)  Non-volatile matter,  %, m/m, 
min. 50 ISO 3251  
(vii)  Flow times, ISO cup No. 4  135 ± 5 ISO 2884  
(viii)  Lead content, ppm, max. Not detected  ISO 3856 -1 
(ix)  Heat resistance  To pass the test  ISO 3248  
(x)  Flash point, °C, min.  32 ISO 1523  
(xi)  Accelerated weathering  test, 
min. 3 years equivalent  ISO 21207  
 
4 Storage stability 
The p aint when stored in the orig inal sealed container under room tem perature shall meet all the requirements 
for a period of o ne year from the date of manufactu re. 
5 Weights and measures  
The fill and volume of the paint shall comply with Weights and Measures regulations of the respective Part ner 
State s. 
6 Packaging, labelling and marking 
6.1 Packaging 
The paint shall be packaged in a suitable container that prevents it from deterioration during storage, 
transportation and normal handling 
6.2 Labelling and marking 
6.2.1 The labelling shall be either in English, Kiswahili or French or in combination as agreed between the 
manufacturer and the supplier. Any other language shall be optional. 
6.2.2 The paints shall be packaged in containers that are legibly and indelibly marked with the following 
information: 
a) the name of the product shall appear as “ Air-dried roofing paints ”; DRAFT UGANDA STANDARDFDEAS 852: 2015  
4 © EAC  2015  – All rights reserved  
 b) manufacturer ’s name and/or registered trade mark; 
c) indication of colour/colour code; 
d) date of manufacture; 
e) net content; 
f) batch/code number; 
g) country of origin; 
h) expiry date or best be fore date; and  
i) instructions for use and safety.  
7 Sampling 
Sampling shall be done in accordance with ISO 15528. 
8 Quality of reagents 
Analytical grade reagents and distilled water or deionized water of equivalent purity shall be used for the 
appropriate tests. DRAFT UGANDA STANDARDFDEA S 852: 2015 
© EAC 2015  – All rights reserved  5 
 Annex A 
(normative) 
 
Chemical resistance test — Immersion method 
A.1 Apparatus  
A.1.1  Panels , mild steel panels of dimensions 150 mm ×100 mm × 3 mm prepared and solvent cleaned  
A.1.2 Tank, constructed from corrosion resistant materials. A suitable be aker can also be used if several 
samples are not tested together.  
A.1.2 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 t ank 
A.2 Reagents  
A.2.1  Sulphuric acid, 10 %  
A.2.2  Distilled water  
A.3 Preparation and coating of panels  
Prepare and clean the panels as in A .1.1. After preparation paint both faces of th e panel and protect the 
edges. To paint the faces, apply the paint at 120 µm wet film thickness. This w ill dry to about 60 µm film 
thickness. Dry the coated panels at 25 °C and 65 % ± 2 %  relative humidity for seven  days.  
A.4 Procedure  
A.4.1  The temperature of the test  shall be  25 ºC ± 2 ºC.    
A.4.2  It is preferable to immerse the test pieces individually i n the test liquid, particularly when using liquids 
of high electrical conductivity in which electrolytic effects could be of importance.  In certain cases, however, it 
may be convenient to immerse several pieces in a single tank. In this case the nature of  the test liquid is 
unaffected by the test pieces. The test pieces shall be at least 30 mm from the sides and bottom of the tank 
and shall be at least 30 mm apart. The test pieces shall be electrically insulated from their supports.  
A.4.3 Place a sufficien t amount of reagent in a suitable vessel (tank) to partially immerse the test piece to 
100 mm length. Immerse the test piece in an approximately vertical position using suitable supports. Immerse 
for 48 h.  
A.4.4 Cover the container for the duration of the test to minimize loss of reagent by evaporation or 
splashing.  
A.4.5  At the end of the specified immersion period, wash the test piece thoroughly with running water. 
Remove any residue liquid from the surface by dabbing with a suitable absorbent cloth or p aper and examine 
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.  DRAFT UGANDA STANDARDFDEAS 852: 2015  
6 © EAC  2015  – All rights reserved  
 Bibliography 
KS 1276:2012, Air-dried roofing paints — Specification  DRAFT UGANDA STANDARDFDEAS 852: 2015    
 
© EAC 2015 – All rights reserved