Basement, Crawl Space & Rim Joist Insulation in Royalton, MN
Rim joist, basement wall and crawl space insulation against cold-floor heat loss.
The Cold-Floor Fix
Cold floors upstairs usually start at the rim joist - the band of framing where the house sits on the foundation. It is thin, it leaks air, and in most central Minnesota homes it is either bare or stuffed with fiberglass that moist air walks straight through. Closed-cell foam sprayed on the rim insulates and air-seals it in one pass and will not hold moisture against the wood.
Basement walls and crawl spaces have the same problem. Concrete and block barely insulate, and fiberglass against either one invites condensation. Foam applied to the wall keeps the insulation and the moisture control in the same layer, turning a damp, cold space into usable square footage.
These are compact, high-impact projects - often done in a day, and one of the most cost-effective upgrades we install.
What This Work Looks Like
Other Insulation Services
Common Questions
Why are my floors cold even though the basement is finished?
Usually the rim joist, the band of framing where the house meets the foundation. It is thin, it leaks air and it is often bare or stuffed with fiberglass that moist air passes straight through. Closed-cell foam there insulates and seals it in one pass.
Should I insulate a crawl space or just seal it off?
In this climate the usual answer is to insulate and encapsulate so the space stays dry and the floor above stops being cold. Venting a crawl space through a Minnesota winter tends to create the moisture problem it was meant to prevent.
Can I put fiberglass against a basement wall instead?
We do not recommend it. Concrete and block barely insulate and fiberglass against them invites condensation inside the wall. Foam keeps the insulation and the moisture control in the same layer.
Want to Know What Your Project Would Cost?
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Free Written Estimates • No Obligation • Local MN Team