My builder dot and dab moisture resistant (green) Knauf plasterboard onto the bathroom brick wall where a shower cubical is going to be installed. He plans to tile over that. Does that sound OK? Should I ask him to do it differently? Thanks
Tiling a shower over green Knauf plasterboard
- Thread starter Yukster
- Start date
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Thanks. Is this cement board good for the job?
https://www.travisperkins.co.uk/Knauf-Aquapanel-Interior-12-5mm-x-900mm-x-2400mm /p/538710
How do you provide a mechanical pix through the dabs into a brick wall? I presume you'd use screws but then i'd need to use roll plugs to fix the screws to, or would I?
https://www.travisperkins.co.uk/Knauf-Aquapanel-Interior-12-5mm-x-900mm-x-2400mm /p/538710
How do you provide a mechanical pix through the dabs into a brick wall? I presume you'd use screws but then i'd need to use roll plugs to fix the screws to, or would I?
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I explored various options such as the Knauf Aquapanel (see link in my previous post) but Knauf tell me not to dot and dab it because their product is cement based and the flue is gypsum based and the two aren't compatible. They told me that i should screw in onto a timber stud-wall which is not suitable because my brick wall is uneven. Marmox tell me i can dot and dab their boards but it is virtually impossible to get 1200 x 2400 boards unless i want to buy a pallet load. I prefer to use one board floor to ceiling rather than two. I fund the following at Builders Depot. http://www.builderdepot.co.uk/hydro-insulated-tilebacker-board-10mm-x-600mm-x-2400mm.html Has anyone used it and let me know your impressions? Thanks
Without knowing the size and type of shower tray its awkward to advise. The 600mm board you mention, fixed vertically, will leave you with a vertical join up to wherever. Most shower trays are more than 600mm on any one side.
If the cement backer board is pulled out too far it can become proud of the surrounding plaster board. This can be overcome but its best to keep the panels in plane with the p/b.
If you use mechanical fixings, which you should, just plug and screw as you would anything else.
If the cement backer board is pulled out too far it can become proud of the surrounding plaster board. This can be overcome but its best to keep the panels in plane with the p/b.
If you use mechanical fixings, which you should, just plug and screw as you would anything else.
I'm installing a Bette 800X1600 shower tray.
I'll use the tile backer to line the entire wall so it should all be level.
I'll be using 10mmx30mm metro ceramic tiles floor to ceiling. Is a 12.5mm Hydro tile backer this enough or do I need a 20mm thick tile backer?
Get the largest size backer board you can handle. The idea is to have the least amount of joins to be taped. If necessary very large boards can be cut outside the house after measuring whats needed. 12.5mm board is great for your size tile.
I prefer to set the shower tray in first, keep it tight to the walls or studding, and drop the backer board down so that its almost sitting on the rim of the shower base.
I prefer to set the shower tray in first, keep it tight to the walls or studding, and drop the backer board down so that its almost sitting on the rim of the shower base.
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