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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2.4.3 Vapour permeability2.4.3.1 Method of verificationThe test is carried out in acc<strong>or</strong>dance with EN/ISO 12572. The test shall be per<strong>f<strong>or</strong></strong>med as described in annex A of thest<strong>and</strong>ard. The tests shall be carried out with climatic conditions as described <strong>f<strong>or</strong></strong> option C in chapter 7 of the st<strong>and</strong>ard.The preparation of the watertight board kit shall be in acc<strong>or</strong>dance with the manufacturer’s instructions – includingprimer etc. if so required.If a primer is intended to have a significant additional function in limiting the water vapour permeability, testing shallbe per<strong>f<strong>or</strong></strong>med on the kit including the primer, <strong>and</strong> it shall be ensured by the manufacturer’s installation procedures that itis possible to obtain a continuous layer of the primer on site, see paragraph. 4.3. Otherwise the test of the water vapourpermeability shall be carried out without the primer.2.4.3.2 Method of assessing <strong>and</strong> judgingDeclared value2.4.4 Moisture resistance2.4.4.1 <strong>Watertight</strong>ness2.4.4.1.1 Method of verificationThe watertightness of the watertight board itself is determined acc<strong>or</strong>ding to the principles in paragraph A7 in prEN14891. The testing is per<strong>f<strong>or</strong></strong>med by testing the board material in the desired thickness. Any penetration of water isdetected e.g. by colour change of methylene blue placed on the substrate beneath the test specimen.The test applies <strong>f<strong>or</strong></strong> <strong>kits</strong> with <strong>or</strong> without a wearing surface, such as ceramic tiles etc, but the test is per<strong>f<strong>or</strong></strong>med withoutthe possible wearing surface. The test applies <strong>f<strong>or</strong></strong> flo<strong>or</strong> <strong>and</strong> wall applications respectively.2.4.4.1.2 Method of assessing <strong>and</strong> judgingPass/fail2.4.4.2 Crack bridging ability2.4.4.2.1 Method of verificationTesting is not relevant unless it is anticipated that cracks in the substrate might propagate through the board, e.g. <strong>f<strong>or</strong></strong>very thin <strong>and</strong> brittle boards fully <strong>or</strong> sometimes partially bonded to the substrate.The test is carried out in acc<strong>or</strong>dance with the method described below:Testing shall be carried out following the method C.2 of prEN 1062-7 with the following precisions. The substrates arerein<strong>f<strong>or</strong></strong>ced concrete slabs, which are manufactured as described in chapter C.2.2 of the above mentioned st<strong>and</strong>ard. Thewatertight board shall be applied onto three of these substrates.Application of the watertight boardThe application of the watertight <strong>covering</strong> shall take place in a strip with a width of 150 mm <strong>covering</strong> 270 mm over thecentre of the slab so that at the longitudinal edges 15 mm wide strips remain uncovered <strong>f<strong>or</strong></strong> observing the cracks in thesubstrate (surface length × width = 300 mm x 200 mm).St<strong>or</strong>age of the prepared test specimen28 days <strong>or</strong> acc<strong>or</strong>ding to the manufacturers description at st<strong>and</strong>ard atmosphere 23 ± 2 °C /50 ± 5 % RH.14
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