ETAG 022 Watertight covering kits for wet room floors and or walls ...
ETAG 022 Watertight covering kits for wet room floors and or walls ...
ETAG 022 Watertight covering kits for wet room floors and or walls ...
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2.4.6 DurabilityDue to the variety of the types of boards covered by this guideline <strong>and</strong> the lack of experience with durability testing thefollowing paragraphs gives indications based on state of the art <strong>and</strong> may not be exhaustive. The approval body mayneed to consider additional tests <strong>f<strong>or</strong></strong> durability assessment including durability of the joint sealing.The following tests <strong>and</strong> assessments apply <strong>f<strong>or</strong></strong> <strong>kits</strong> with <strong>or</strong> without wearing surface as specified in the below text.2.4.6.1 Dimensional stability2.4.6.1.1 Method of verificationThe assessment is carried out <strong>f<strong>or</strong></strong> <strong>kits</strong> both with <strong>and</strong> without a wearing surface.F<strong>or</strong> board materials the dimensional stability is determined in acc<strong>or</strong>dance with relevant test methods <strong>f<strong>or</strong></strong> the material inquestion e.g. EN 318 <strong>f<strong>or</strong></strong> wooden boards <strong>or</strong> EN 12467 <strong>f<strong>or</strong></strong> fibre cement flat sheets <strong>or</strong> EN 13613, EN 13614, 13615 <strong>f<strong>or</strong></strong>EPS/XPS/PUR.Where the board is already CE marked <strong>and</strong> tested in acc<strong>or</strong>dance with a relevant test method, it is not necessary to repeatthe tests.2.4.6.1.2 Method of assessing <strong>and</strong> judgingDeclared value.2.4.6.2 Resistance to temperature2.4.6.2.1 Method of verificationThe resistance to temperature of the watertight <strong>covering</strong> <strong>kits</strong> with <strong>or</strong> without a wearing surface is determined inacc<strong>or</strong>dance with the following procedure:Heat ageing is done acc<strong>or</strong>ding to relevant st<strong>and</strong>ards <strong>f<strong>or</strong></strong> the board materials if available. In other cases the board isexposed to heat ageing at 70° C <strong>f<strong>or</strong></strong> 2 weeks. If the board is vulnerable to such a high temperature exposure may insteadbe per<strong>f<strong>or</strong></strong>med <strong>f<strong>or</strong></strong> 4 weeks at 60° C <strong>or</strong> 8 weeks at 50° C. After ageing the samples are st<strong>or</strong>ed at ambient lab<strong>or</strong>at<strong>or</strong>yconditions <strong>f<strong>or</strong></strong> at least 24 hours be<strong>f<strong>or</strong></strong>e testing.The flexural bending strength <strong>and</strong> the stiffness are determined <strong>f<strong>or</strong></strong> exposed <strong>and</strong> unexposed materials respectivelyacc<strong>or</strong>ding to the relevant st<strong>and</strong>ard e.g. EN 12089.Bond strength is per<strong>f<strong>or</strong></strong>med acc<strong>or</strong>ding to the directions given in 2.4.4.3 <strong>f<strong>or</strong></strong> exposed <strong>and</strong> unexposed materialsrespectively.Where the board is already CE marked <strong>and</strong> aged <strong>and</strong> tested in acc<strong>or</strong>dance with a relevant test method, it is not necessaryto repeat the tests2.4.6.1.2 Method of assessing <strong>and</strong> judgingAfter exposure the flexural bending strength <strong>and</strong> the stiffness are not allowed to deviate by m<strong>or</strong>e than ± 20% from thebending strength of the unaged material.After exposure the bond strength shall fulfil the requirements <strong>f<strong>or</strong></strong> the same relevant assessment categ<strong>or</strong>y. Thetemperature at which the test was per<strong>f<strong>or</strong></strong>med shall be indicated.2.4.6.3 Resistance to water2.4.6.3.1 Method of verificationThe resistance to water of the watertight <strong>covering</strong> <strong>kits</strong> is covered by the test acc<strong>or</strong>ding to Annex A, F, G <strong>or</strong> E.18
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