Which adhesive for tile backer board on chipboard floor

[lost_diyer]

I’m planning on laying tile backer board on chipboard flooring prior to tiling. Which adhesive is required to lay the backer on to?

Would something like this work? https://www.screwfix.com/p/no-nonse...=0AAAAAD8IdPz9Q0PWDQXuuk1M9yTmHDKI2&gclsrc=ds

Maybe a non fast set adhesive as I’m not a pro.

 

[Mark DM]

Make sure you put plenty of fixings through into the flooring, taking into account avoiding services.

 

[lost_diyer]

Make sure you put plenty of fixings through into the flooring, taking into account avoiding services.

Yes I plan to. Would any floor adhesive work?

 

[Mark DM]

If the floors really flat then mechanical fixings on their own should be enough.120 - 150mm fixing grid) If you need to level then I would use a decent branded one. No need for fast set. Use a notched trowel 8-10mm and don't over tamp down or you may loose the level .

 

[lost_diyer]

If the floors really flat then mechanical fixings on their own should be enough.120 - 150mm fixing grid) If you need to level then I would use a decent branded one. No need for fast set. Use a notched trowel 8-10mm and don't over tamp down or you may loose the level .

The floor is mostly level so may be ok but I’ll need to double check. If adhesive is needed, does it need to be flex?

 

[Mark DM]

Yes, I would go flexible although most are. Check to be sure.

 

[DIYDave.]

Not used the SF Own Brand adhesive in your link but as above, your chipboard flooring is laid over timber joists (I would imagine) so use a flexible adhesive

Check product details whatever you decide on but likely you will need to prime the chip flooring with a specific tile primer or just go diluted SBR @ 1-4 water

Wickes sell a 1lr SBR which is a handy diy size as most other places comes in 5lt minimum, as diluting at 1-4, smaller unit still gives you loads

No need to prime the backer board, if using the cement type boards, just wipe over with a damp cloth as can be rather dusty and affect adhesion

 

[lost_diyer]

Which tape and membrane (if any) would you guys recommend to cover joints?

 

[Mark DM]

I use a regular scrim.
As Dave says, a primer over the floor is definitely worthwhile

 

[lost_diyer]

I use a regular scrim.
As Dave says, a primer over the floor is definitely worthwhile

Do you use tile adhesive to cover the scrim?

 

[Mark DM]

Yes that's correct, a skim over