TECHNICAL ISO/TR REPORT 20436 First edition 2017-07 Buildings and civil engineering works Sealants - Paintability and paint compatibility of sealants Batiments et ouvrages de geénie civil - Mastics -Peignabilité et compatibilité des mastics avec les peintures Reference number IS0/TR 20436:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS underI Not for Resale, 2017/9/27 06:07:21 ted without license from IHS IS0/TR20436:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. IsOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org DrganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ07 -All rights reserved Not for Resale, 2017/9/27 06:07:21 etworking permitted without license from IHS IS0/TR 20436:2017(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope 2 Normative references ..1 3 Terms and definitions 4 Evaluation of paintability of a sealant .1 5 Methods for assessment of initial coating application .3 5.1 General .3 5.2 Reticulation/fish eyes .3 5.2.1 Principle. .3 5.2.2 Evaluation. .3 5.2.3 Reporting.. 3 5.3 Flow of paint/wet surface finish .3 5.3.1 Principle 3 5.3.2 Evaluation .3 5.3.3 Reporting. 4 5.4 Effect of sealant on curing/drying time of paint/coating .4 5.4.1 Principle .4 5.4.2 Evaluation. ..4 5.4.3 Reporting.. 6 Test methods for assessment relating to cure effects. ..4 6.1 Principle.. ..4 6.2 Evaluation. 6.3 Reporting. .5 7 Test methods to assess surface appearance of dried coating .5 7.1 .5 General 7.2 Colour difference between painted sealant and painted substrate. .5 7.2.1 .5 Overview 7.2.2 Principle. .5 7.2.3 Evaluation. .5 7.2.4 Reporting. .5 7.3 Surface wrinkling. .6. 7.3.1 Overview. .6 7.3.2 Principle .6 7.3.3 Evaluation .6 7.3.4 Reporting. .6 7.4 Surface sheen or bloom ..6 7.4.1 Overview 6 7.4.2 Principle. .6 7.4.3 Evaluation. .6 7.4.4 Reporting. 1 7.5 Surfacetack .7 7.5.1 Overview. .7 7.5.2 Principle. ..7 7.5.3 Evaluation. 7 Reporting. 7.5.4 7.6 Staining. .8 7.6.1 Overview ..8 7.6.2 Principle. ..8 7.6.3 Evaluation. ..8 7.6.4 Reporting. .9 7.7 Surface cracking of paint only 9 ntemaonalganizatin7All rights reserved iii nsee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS