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Tanking and Wetrooms Forum
Substrate for shower area
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[QUOTE="Drainage by Design, post: 873941"] Scrap the hardie, just use a waterproof board instead Whilst I'm no fan of plasterboard (or plywood) in wet areas. the plasterboard MAY be a component in fire compartmentalisation. "Waterproof board" usually implies foam core 'tilebacker' material. However, Grime is going to put tanking on the substrate under the wall finish. THAT is the layer that is the key to a longlasting and non-leaking wetroom. Or as I put it to people "make sure you build just the one wetroom - don't include the room below". Plasterboard can be OK .If the tanking is done properly. II's very cheap and easy to use. Hardieboard doesn't react so much to water leaks. But make sure there are no water leaks ...... [/QUOTE]
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Tanking and Wetrooms Forum
Substrate for shower area
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