ianba
Joined: 26 Feb 2003 Posts: 30
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Posted: Wed Feb 23, 2005 3:52 pm Post subject: Under tile boarding for WC |
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| I'm laying tiles on the floor of a downstairs cloakroom and I need to know what thickness, if any, of weatherproof boarding I need to put under the tiles to stop movement cracking the grouting. The subfloor is part concrete, part floorboard. I've heard that it should be 18mm, but this will put the tiles higher than the wooden flooring outside of the room. Can I use 12mm board? |
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