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Q. We have moisture problems with a stucco exterior. What are the possible causes? —E-mail A. AWCI’s Technical Manual No. 15, “Evaluation of Three-Coat Portland-Cement Plaster (Stucco),” identifies four major causes of water...

Wachuwannano

Q When hanging gypsum board, what happens if you hang the walls first and then the ceiling? A GA 216 and ASTM C840 recommend installing the ceiling first, though they don’t explain why ...

Wachuwannano

Question: What is the allowable difference or tolerance for variation of a veneer plaster surface? Answer: There is more to this question than first meets the eye. I have learned that anytime there’s hand...

Wachuwannano

Question: I recently had an inspector fail a job because he said the fire rated caulk we were using was insufficient for the firestopping. We followed the plans, but apparently the designer failed to include...