screwed down wood batons piercing vapour barrier in Kitchen subfloor

[Mirjam]

Hi tilers!

First of all, thanks for all you have written in this great forum! :hurray:
We would be very grateful for some advice on this situation.



Our kitchen floor needs to be tiled. It has a concrete floor, probably without damp proof barrier in it.

Here is what we plan to do:
put down a vapour barrier
lay out wooden batons on top and screw them down into the concrete floor
fit insulation between the batons
nail down hardwood plywood 25mm
seal the ply with SBR
tile with porcelain 60x30x1cm tiles and some PTBflexible BAL adhesive

We really want a bit of insulation. This is why we bother about the wood batons. Also, the concrete floor has a bitumen based asbestos glue on it which cant be safely removed so it was hard to think of any other solution.

The problem is that I worry that piercing a vapour barrier sounds pretty wrong. Is there a way around it? Or perhaps it isn't all that bad with a few small screw holes?

Thanks!
Mirjam

 

[cam_low]

Re: screwed down wood batons piercing vapour barrier in Kitchen subflo

I suggest calling Holmes on homes for a roll of 'vapour barrier'

 

[Ajax123]

Re: screwed down wood batons piercing vapour barrier in Kitchen subflo

Don't screw the battens down. Gravity works just as well. That way you dont peirce the membrane. But instead of nailing you ply down screw it down. Make sure the screws go well into the batons to provide some lateral support. If you are worried about sideways movement of the battens put some noggins between them before cutting the insulation in.

 

[Mirjam]

Re: screwed down wood batons piercing vapour barrier in Kitchen subflo

Thank you so much Ajax123!

Ill consider some noggins then or just put them down without screws.