Overboard or ply?

[essie]

We currently have laminate flooring on our bathroom but due to a leak we have the opportunity to pull it up and lay tiles instead. So we want to lay ceramic tiles on an upstairs bathroom in an edwardian house. So far we have been given different advice on what the best option is: pull up the floorboards and lay 18 or 20mm ply, leave the boards and lay 15mm ply (not happy with this one as will raise the floor too high) or use backerboard.

Some of the floorboards look like they have had woodworm in the past.

Our insurers are paying a certain amount towards the work so I am keen that, should we have a problem in the future, we have complied with any relevent building regs.

Can anyone help?

 

[Peter]

I usually find that overboarding makes a floor much more solid but if the original floorboards don't look too fresh and you want minimal step then minimum 18mm ply with plenty of extra noggins and a 6mm cement board should keep the height down and give a good solid floor. Where was the leak coming from?

 

[essie]

Thanks wingn, the leak was coming from the toilet so the underside of the laminate was soaked.

 

[nybor62]

pull up the old floor boards fix min 18 mm ply then over board with cement board 6mm or more if u can get away with the height

 

[bugs183]

I'm with these comments above, for all the time it takes trying to sort old floor boards you may as well put a lovely new floor down.

 

[stoneface ltd]

Hi There, if the substrate boards are sufficiently sound enough or can be screwed down, then a ditra or similar decoupling matt will suffice for covering the area.. this will need to be primed with unibond mixture or sbr then fixed with a rapid setting flexible adhesive or vynil adhesive depending on how level/ straight the existing boards are.
Once the ditra matting / decoupling matt is adhered to the substrate you are then free to tile with flexible adhesives onto that.. the matting will only raise the floor level by 6mm inc anchoring adhesive..!
( 2.5mm adhesive +3.5mm matting)
hope this is some use to you ...
stoneface contracts ltd..

 

[White Room]

Hi There, if the substrate boards are sufficiently sound enough or can be screwed down, then a ditra or similar decoupling matt will suffice for covering the area.. this will need to be primed with unibond mixture or sbr then fixed with a rapid setting flexible adhesive or vynil adhesive depending on how level/ straight the existing boards are.
Once the ditra matting / decoupling matt is adhered to the substrate you are then free to tile with flexible adhesives onto that.. the matting will only raise the floor level by 6mm inc anchoring adhesive..!
( 2.5mm adhesive +3.5mm matting)
hope this is some use to you ...
stoneface contracts ltd..

Not pva please....