Underfloor heating on chipboards

[Rich]

Yeah, its good practice and well worth doing IMO. Next time you lay a floor, press a tile into the adhesive without back buttering it, then lift it up and have a look at the bck of the tile and then do the same with a tile that has been back buttered. You are trying to get 100% contact on the back of the tile as any voids will end up with cracks in the tiles later on down the line.

 

[shogun rua]

how much addy do you apply mate?

 

[Rich]

If the floor is pretty flat then you should only need to skim the back of the tile with the flat edge of your trowel, it is only so that the 2 wet surfaces make contact and make 1 solid bed of adhesive. If you lay the tile down and it ia slightly low than you can lift it up and apply more but it is very important not to leave and voids.

 

[shogun rua]

Hi,

do i need to use any specific screws and washers to screw down the boards?

cheers

paul

 

[shogun rua]

the board are to be fitted in a brick bond way the tiles are going vertically (300x450) does it matter if the board go horizontally or vertically?

 

[White Room]

I'd be fixing right angles to to other joints

 

[shogun rua]

so follow the chipboard layout and screw to the joists then at 300 centres?

 

[jay]

try this James Hardie® ceramic tile underlay sheets - CSP Cement Sheet Products

 

[Dan]

Just bumping some threads in the underfloor heating forum. You can now find and search for both electric underfloor heating and water underfloor heating threads. By the way, if you feel some of the threads you want to be seen at the top of the forum need to be bumped back, for the next month or so from now, feel free to do that. Although it's not usually something we allow, whilst we're going through this process of changing over forum software, we see the need for this to happen.