John Sayers' Recording Studio Design Forum Archive

We are almost done constructing our 5 room, 3 bath addition in which I installed RC channel in two rooms, two bathrooms & opposing walls. I was wondering if putting joint tape over the cocking will effect the preformance of the cocking. If you do not put joint tape the texture will crack right.

Is there a difference in finishing a wall with RC compared to a non-RC wall.

Roberto, sorry this got lost;

When finishing a wall with RC under, you would use normal drywall methods between sheets of drywall - mud, tape, mud, sand, and texture. Around the edges of the wall, you should NOT let anything form a hard contact between the RC'd wallboard and the rest of the structure; so if you are going to use moldings around the floor or ceiling, they should be fastened to only ONE surface and a small air gap left between the adjoining surface - typically about 1/16" to 1/8" gap. This can be done by fastening the molding to the RC'd drywall with a thin strip of wood veneer or something under the molding, then afterward you remove the thin strip so the molding only touches ONE of the surfaces.

Corner taping can be done using the plastic mesh product that's available now, it's called flexible inside corner mold -

And you're right, you can't texture over caulk or it will not adhere, which is another reason not to caulk between sheets on a wall but only around the edges... Steve