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musty odour from crawlspace

Posted by andre_z (My Page) on
Tue, Aug 18, 09 at 8:09

There is a strong musty odour emanating from the crawl space of our house, especially on humid days. The crawl space is about 3 feet high with a concrete floor. Ventilation is probably insufficient because the house is surrounded on two sides with a concrete verandah which makes cross ventillation impossible.

The area is relatively clean. I did notice black sooty spots on the white electrical wires... (Is there a way to include photos on this forum?)

A heating contractor suggested spraying with a weak solution of bleach with a garden sprayer. Are there better short and long term solutions ?


Follow-Up Postings:

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RE: musty odour from crawlspace

The side that isn't blocked should be used to ventilate the space. Open two areas,as far apart as possible and install an exhaust fan set up to a humidistat. The other opening will be the intake as well as an additional vent into the living space.
In the winter, close off the openings.
Ron


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RE: musty odour from crawlspace

Ron's solution would be the best. A short term solution might be getting a dehumidifier, as the dampness is causing the "sooty spot" & the reason to have the humidistat in the fan circuit.

Use of bleach is a one-shot deal, very short term.


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