I've to fit some polysafe in a chill room the floor is metal and rusty which screed do i use fball 700 or some thing else! i will prime it with 131. Steve
Slightly dodgie I would go with either Altro everlay or FBalls isolator in their as they can fail if you use Everlay use the thicker one theres 2 A and B can't remember which one of the top of my head is the thicker but it does cove a multitued of sins.