Expert Spray Foam Insulation for Rim Joists
Stop Energy Loss & Moisture Intrusion
Cold spots, drafts, and moisture infiltration at the rim joist can undermine your home’s comfort, energy efficiency, and structural health. At Fresh Coast Foam, we seal and insulate your rim joists with precision-applied closed-cell spray foam—eliminating air leaks and water damage for good.
Eliminate Drafts & Cold Floors
Why Rim Joist Insulation Matters
Uninsulated rim joists let frigid winter air sneak into your home and sap heat from living spaces. Say goodbye to icy floors and chilly baseboards.
Slash Energy Bills
Rim joist leaks can account for up to 10–15% of your home’s heating and cooling loss. Airtight spray foam pays for itself through lower utility costs.
Prevent Moisture & Mold
Gaps at the sill plate invite condensation, wood rot, and mold growth—threatening your home’s structure and your family’s health.
Enhance Structural Integrity
Closed-cell foam adds rigidity to floor joists and sill plates, reinforcing your home’s foundation against shifting soils and seasonal movement.
How FCF’s Spray Foam Installation Works
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Our Rim Joist Insulation Process
Detailed Inspection
We examine your basement perimeter for leaks, pests, and wood decay.Surface Preparation
Cracks and gaps are pre-sealed; any old insulation is removed.Precision Foam Application
Closed-cell polyurethane foam is sprayed directly into the rim joist cavities—expanding to fill every void and bond to wood.Clean Finish & Verification
Once cured in seconds, we trim any excess foam flush with your joists and perform a blower-door check to verify airtightness.
Spray Foam vs. Traditional Insulation
Frequently Asked Questions
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Fiberglass compresses and gaps easily, losing R-value and allowing air and moisture through. Spray foam fills every cavity and creates a permanent seal.
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Yes. After curing (in seconds), the foam is inert and non-toxic, providing a healthy barrier against pests and mold.
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Most homeowners see a measurable drop in heating/cooling costs within the first billing cycle after insulation.
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Absolutely. Our closed-cell foam performs reliably in Michigan temperatures down to 20°F.
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Costs depend on the linear footage and access, but rim joist spray foam typically pays for itself in energy savings within 1–2 years. Contact us for a personalized quote.
