Crawl Space Venting (Answer)

Hey J.T.,

You are correct, it is important to keep from building up excessive moisture in the crawlspace. It is also important to keep the pipes from freezing. This is always a source of confusion when we talk about venting in the cold weather.
In attics, heat rises up from the house to meet the cold air of the eaves,
creating a condition for moisture if not properly vented. This makes the cold months a prime time for moisture problems in the attic.
The summer months create the best conditions for moisture in a crawlspace. However, anytime you have two different temperatures getting together you have moisture concerns.
I recommend leaving the crawlspace vents open until the temperature gets below freezing. This will keep the pipes from freezing. Make sure to re-open them when the temperature rises.

Thanks for your question.

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