Hydra Posted August 10, 2021 Share Posted August 10, 2021 Howdy folk. Got myself a floor that needs raising by 15 cm and needs to meet regs regarding insulation. BCO wants 10 cm of PIR which i'm happy with. Floor is currently smooth but not level (up to 3 mm differences and several notable humps) (this is after using leveller twice, and yes I primed, mixed thoroughly and worked it) - can't stand the stuff personally. Because I have up to 2" extra clearance (and can't pour that much leveller in as it'll raise the floor above the base plates - has anyone heard of bedding the PIR on a morter mix a bit like you might with a shower tray? Ie loads of dots / dabs then pressured down till level and left to cure? It's a 80 x 140 cm room so not that large. Will use battens for all points of load (toilet and entrance) Link to comment Share on other sites More sharing options...
nod Posted August 10, 2021 Share Posted August 10, 2021 I’ve bedded Aqua board onto floors to level them up prior to tiling I’ve always used a flexible tile adhesive to do this Link to comment Share on other sites More sharing options...
Temp Posted August 10, 2021 Share Posted August 10, 2021 3mm is nothing. Our beam and block floor wasn't that smooth. Link to comment Share on other sites More sharing options...
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