Spray Foam Insulation Crawl Space Dirt Floor

This means no more drafts under your home and no more cold floors.

Spray foam insulation crawl space dirt floor.

While spray foam insulation is one of the most effective insulation materials in other rooms of the home it is a bad idea in a wet or damp crawl space. Retrofoam of michigan has been insulating crawl spaces with foam insulation for more than 15 years. Applying spray foam to the dirt floor of your crawlspace may be one of the easiest and most effective solutions and if so then you would be best not to insulate the joists over your head and just heat that space instead. You could also use batt insulation but don t.

Moisture gets easily trapped between the foam and the wall and a moist foundation wall generally leads to mold growth and wood rot. When we insulate the walls of the crawl space we lay down plastic over the dirt floor that is a vapor barrier. This will give you the thermal barrier between the crawl space and your living space as well as help keep the air from getting from the crawl space into the living space. The sill plate is the first piece of framing lumber and it runs on top of the crawl space wall.

Because the air flow is completely blocked this eliminates one of the ways pollen gets into your home. This is the technique we use when insulating a crawl space with a dirt floor. 7 reasons you should use spray foam insulation in your crawl space spray foam insulation gets into even the smallest cracks which thoroughly blocks air flow from the outside. When you re using fiberglass batting insulation material run it about 6 inches or so onto the crawl space floor.

To insulate the crawl space i would use a closed cell two pound 907 gram spray foam because it will act as both your vapour barrier and insulation.