Priming a screeded floor.

[Tewy81]

I need to prime a screeded floor ready to put the undertile insulation down, any recommended products for this?

 

[Doggit]

What type of underfloor heating are you using.

 

[Doggit]

Check this out http://forums.moneysavingexpert.com/showthread.php?t=3030614

 

[Tewy81]

I am using a 150w heating matt, by living heat. It's a 20m2 matt. I am laying on 6mm insulation board(it's blue) think it's called Xps/styrofoam.
Living heat said the screed needs to be primed with a "suitable primer"
I can't use 10mm insulation as it will be too high where it meets bifold doors and hallway.
Any tips/ advise would be greatly appreciated.
Andy

 

[Paul C.]

What type of screed is it? Sand and Cement or Anhydrite/Calcium Sulphate

 

[r1flyguy]

Did the company who supplied the heating mat not supply the primer?

I used another company who sold as a package, I was able to use 10mm insulated backer board instead of 6mm as I have the height.

Have they told you that you need to prime the insulation boards once they are fitted too.

I appreciate you can tile directly on top of the Matt but that seems like a pain to do so I've used a self levelling compound on top of the Matt to make tiling easier.

No help to you I know