1:5:10:365 EcoTip Blog

November 3, 2008

:308 Crawlspace Ventilation

Filed under: :308 Crawlspace Ventilation — Tags: , , — John Banta @ 12:57 am

Take the 1:5:10:365 challenge: Do one thing – for 5 to 10 minutes – 365 days a year to make our home and planet environment better.

1:5:10:308 EcoTip: Autumn is the time of year when people may start sealing up the vents around their crawlspace. This may not be a good idea. Extra soil moisture can migrate into building materials resulting in mold growth and the lack of ventilation may result in higher radon concentrations. If you believe sealing your crawlspace is necessary, you may want to have it professionally inspected to determine if that can be done without creating problems.

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 Additional Information:

Suggested Review: :050, :129

Placing a soil barrier in the crawlspace can help reduce moisture problems and typically reduces the required amount of ventilation by 90%.

If you believe your crawlspace vents need to be closed in winter because the floor feels cold or the plumbing will freeze – you should consider upgrading the insulation to the underside of the floor and the pipes.

Tomorrow’s post will be about a radon gas-mat system that works well with a soil barrier at reducing radon levels.

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