Prior to covering the boards with a self levelling mix, can you / should you apply a primer to add adhesion directly on top of the boards?
Yes as if there is too much dust or dirt on the floor then the self adhesive backing on the mat will cause it to roll up , so its advise to use a primer before putting the mat down.
Answered by: Klima Underfloor Heating
Date published: 2021-04-03