Charlie: Tim and Kingwood has kind of involved one here, so sit back and listen to his story. He said, “I had an especially difficult time drying out the green sheet rock layer in my home. The interior of the house was dry, but the outside bricks are still soaking. I couldn’t get the dry air to that inner area next to the brick, so I cut ventilation holes near the bottom of the walls as well as seven feet up and directed blowers into the bottom holes creating an air flow. Now, it seems everything is dry and I’ll patch over the holes and apply some mildecide and pigmented shellac.” His question is, do I apply this stuff over the interior of the green sheet rock that’s severely stained and over the framing?”
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Tom: If he means the pigmented shellac?
Charlie: He says Zinsser, but I’m assuming it’s pigmented shellac.
Tom: Yeah, that’s what he’s talking about. The answer is yes.
Charlie: Okay, and is there a better way to make patches over the interior green sheet rock in order to seal out the moisture from the new insulation layer?
Tom: No, you’re not going to seal out all the moisture. The brick is going to get wet and that’s why you have an air space, so the water can go down. Every time it rains your brick’s going to get wet again. To try to dry it out, I probably would have told you not to do that. I would probably get some good quality air conditioning tape and I’d tape that thing all up before I painted it and just leave it at that. If you want to try to patch it with sheet rock you can, but I don’t think it’s worth the trouble.