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New House Construction Under The Rain

Posted by grasshopper on February 28th, 2003 09:16 AM
In reply to New House Construction Under The Rain by Joe Nu House on February 27th, 2003 01:30 AM [Go to top of thread]

Watchout for high humidity after the doors and windows are installed. If the % RH is above 60% for extended time, mold will grow throughout. You need heavy duty dehumidification to reduce the %RH to about 50% through the construction phase. This is near impossible during the day with trades going in and out. You need 100 pints/day of dehumidification per 1,000 FT^ of space. But overnight good dehumidification will pull down to 50% and hold. Also before the trim and hardwood floors are nailed down, the home should be held for a week or two at 50% RH to shrink the water swollen frame and drywall. Also check basement or crawlspace for excess moisture. Most people don't catch this until to late. Stop doing the rain dance.

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