deemail

construction glue (often called liquid nails, but that is a brand name, there are others) goes into a caulking gun and you kind of make a 'blob' about an inch across.... sort of 'candy kiss' size... then you just push the foam onto the blobs (mine were about 2 feet apart in a big grid..... when you need to take it off, you pop off what you can with a putty knife and then maybe need to sand a bit... but not much if any at all.... the spray glue can be trickier....spray too heavy and it will melt the foam...hold can back about a foot and move quickly so not too much goes in one spot.... just a light film is all that's needed anyway... i just sprayed about a 2 ft area, applied the felt, and then peeled back loose felt and sprayed a bit more....spray and spread...repeat....