Insulating crawl space

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Old 01-31-02, 07:07 PM
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Insulating crawl space

I have a beach house in the Puget Sound area which is supported by concrete piers about two feet above a gravel surface that frequently becomes damp. There is no foundation surrounding the house. The subfloor is constructed on top of beams with a 4 foot spacing. I would like to insulate the floors and would like recommendations for doing this, i.e. R-value, type of insulation, use of plastic vapor barrier, etc. Thank you.
 
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Old 02-01-02, 04:59 PM
rbisys
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Greetings,

If you use any type of fiber type insulation in this application you will have nothing but moisture problems.

I would install two layers of radiant barrier insulation (RBI) between the beams and then aluminum soffit material below that.

The RBI will reflect 97% of the heat energy back up to the floor.
The Aluminum soffit material will protect the RBI from wind effects and also act as a moisture barrier against the ground moisture.

Thank you for considering my opinion.
 
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