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Insulation Problems - Insulation - Crawlspace Solutions

Iíve heard about crawl space encapsulation, am I better off sealing the vents?

Iíve heard about crawl space encapsulation. Am I better off sealing the vents to my crawl with a rigid foam board or insulating between my floor joists and keeping the space ventilated?

If you have or want a non ventilated sealed crawl space, full encapsulation, then you probably donít need to add floor insulation. Traditionally, crawl spaces have been vented to prevent problems with moisture. However there are a growing number of building professionals that recognize the benefits of a moisture controlled unventilated crawl space.

There are two main reasons for this line of thinking:

  • Ventilation in the winter makes it difficult to keep crawl spaces warm.

  • Warm, moist air brought into the crawl space through foundation vents in the summer is often unable to dehumidify a crawl space. In fact, this moist outdoor air c... Read More

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