Barryscotland Posted February 21, 2022 Share Posted February 21, 2022 What would you use to fill the gap between floor and plasterboard before tanking the tray? Just some expanding foam? Link to comment Share on other sites More sharing options...
TonyT Posted February 21, 2022 Share Posted February 21, 2022 I would leave it as is. Link to comment Share on other sites More sharing options...
Russell griffiths Posted February 22, 2022 Share Posted February 22, 2022 Don’t you use backer rod, this is a foam filler profile to fill large voids to allow a bit of movement. I would look at the instructions on the tanking system you will use. Link to comment Share on other sites More sharing options...
Barryscotland Posted February 28, 2022 Author Share Posted February 28, 2022 Left it to the tiler to do and he filled it with a foam then cut it flush before tanking it. Link to comment Share on other sites More sharing options...
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