BlackDog4
Not so new Member
Hi,
I am in the process of making a rockwall and wondering if I meed a Styrofoam backing on the ply before I spray the expanda foam or will it hold to some screws drilled through the ply.
I am in the process of making a rockwall and wondering if I meed a Styrofoam backing on the ply before I spray the expanda foam or will it hold to some screws drilled through the ply.