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615 Insulation, insulation company in Nashville TN 615-431-3789

Spray Foam Insulation

Rim joist spray foam that closes one of the leakiest spots in the whole house

The band of wood where the floor frame meets the foundation is full of gaps. A bead of foam seals it against air, pests and moisture.

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Rim Joist Spray Foam

The rim joist, also called the band joist, sits where the house framing meets the foundation. It is a long ring of small gaps, seams and wood ends, and in many homes it is a major source of drafts, cold floors and pest entry. Insulation batts rarely seal it.

We spray rim joists in basements and crawl spaces across Nashville and Middle Tennessee. Closed-cell foam gives a high R-value in the narrow bay, and a continuous seal along the sill, the joists and the subfloor edge.

What you get

Done right, from the first walk-through

01

Seals the sill and seams

Foam bonds across every gap.

02

High R-value in a small space

Closed-cell foam fits the narrow bay.

03

Pest and draft barrier

Gaps that let in air and insects are closed.

04

Clean finish

Foam trimmed where needed.

The process

How your service comes together

  1. 1

    Inspect the sill

    We look for rot, leaks and gaps before we spray.

  2. 2

    Foam the rim joist

    A continuous layer is applied to depth.

  3. 3

    Review and clean

    We check the seal and clean up the area.

FAQ

Common questions about rim joist spray foam

Is foam better than batts on a rim joist?

Yes. Batts leave gaps and can trap moisture. Foam seals and stays in place.

Can foam stop pests?

It closes the gaps they use, though foam alone is not pest control.

Will foam cause the wood to rot?

Foam is applied to dry, sound wood. We check the sill first and recommend repairs where needed.

Related services

Often planned together

Crawl Space Spray Foam Crawl Space Spray FoamFoam on crawl space walls that stops damp air at the foundation.Learn more Basement Insulation Basement InsulationRigid foam and foam-sealed walls for warm, dry basements.Learn more Whole-Home Air Sealing Whole-Home Air SealingLeaks closed from the attic to the crawl space.Learn more

Service areas

Nashville and the cities all around it

From Clarksville to Shelbyville and Dickson to Cookeville, pick your city to see the insulation, spray foam and air sealing work we handle in your part of Middle Tennessee.

Nashville Antioch Arrington Bellevue Brentwood Clarksville College Grove Columbia Cookeville Dickson Fairview Franklin Gallatin Goodlettsville Hendersonville Hermitage La Vergne Lebanon Madison Mt. Juliet Murfreesboro Nolensville Shelbyville Smyrna Spring Hill Springfield Thompson's Station White House

Not on the list? Call 615-431-3789. We take projects across Middle Tennessee.

Let us help with your rim joist spray foam

Call, text or send the form. Tell us about the building, what bothers you and when you hope to start, and we will take it from there.

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