Moisture control & curing challenges with concrete block walls in desert climates
Hey everyone,
I’m managing several residential and commercial masonry projects here in Las Vegas, NV, and I’ve run into some interesting challenges with moisture management and curing times—especially when dealing with CMU (concrete block) walls in our dry, hot climate.
Even though it’s arid here, we still get unexpected humidity spikes during monsoon season, and it messes with curing consistency and long-term performance. I’ve been experimenting with various prep techniques and sealants, but I’d love to hear what’s working for others.
Some questions:
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What are your go-to methods for controlling moisture levels during curing in hot, dry environments?
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Are there any breathable sealants or vapor-permeable coatings you’d recommend for CMU walls that still need protection?
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How do you typically monitor or adjust curing when exterior temps are consistently 100°F+?
I’m building a small resource based on what I’m learning (will share once it’s polished), but would love to include and credit any insights you all have if you’re open to it.
Appreciate the knowledge in this community—looking forward to your input!.
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Replies
Prosoco Cat5 and Sto GoldCoat are great CMU/Brick sealers that are vapor open, but air and water tight. Though of course I would not put this on until the CMU is cured. Prosoco is good about recommending specific products if you tell them your assembly and scenario.
For curing during humid or rainy seasons I've seen tents and fans used before but those were for stucco applications or concrete slabs, not for walls / CMU