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Advice on tiling onto "overlay" underfloor heating
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[QUOTE="Old Mod, post: 885319"] Oh ok, a little odd, but ok. So first thing to note, gypsum boards. Gypsum and cement don’t mix well. Make sure the gypsum boards are well primed, not with pva! But an acrylic or an sbr based primer. Minimum 2 coats. Pressurise system as suggested and leave at around 5-6 bar if possible. Latex over pipes regardless of what instructions say. It will eliminate voids beneath your tiles and afford a better transfer of heat to your tiles. You can use an anti fracture mat as opposed to a full decoupler. Few differences but in essence an anti fracture mat is only 1mm thick as opposed to 4-5 with a decoupler. Let any decoupler or anti fracture mat cure overnight. Do not tile it straight away as suggested. Then tile. Do not use suggested adhesive unless a professional tiler is doing the job. You WILL throw away more than you use if you are doing the Tiling. It’s one of the most difficult adhesives out there [/QUOTE]
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Advice on tiling onto "overlay" underfloor heating
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