Encapsulation and Sealing
Rim Joist Spray Foam Insulation
The rim joist sits where the floor meets the foundation, and it is full of gaps. Closed-cell spray foam seals and insulates it in one step, stopping drafts, pests and moisture from sneaking in at the top of the wall.
- Best forDrafty floors and leaky rim areas
- Typical rhythmOften a few hours
- TeamTechnicians trained in spray foam application
- Pairs well withWall insulation and encapsulation
What you get
What rim joist spray foam insulation includes
- 1Seals and insulatesOne material fills gaps and adds an insulating layer.
- 2Stops pestsA sealed rim joist closes a common entry point.
- 3Moisture resistantClosed-cell foam resists water vapor.
- 4Clean applicationWork areas are protected and foam is trimmed neatly.
How it goes
From the first call to a dry, finished space
- 1Protect and prepareWe cover the area and set up ventilation.
- 2Spray the foamFoam is applied in controlled passes.
- 3Trim and checkWe trim overspray and look for missed spots.
- 4Let it cureYou get clear notes on curing and re-entry.
Good fit when
Is rim joist spray foam insulation right for you?
- Cold air comes through the floor edges
- Mice or insects get in near the rim
- Insulation batts at the rim are wet or missing
- You are sealing the crawl space
Questions
About rim joist spray foam insulation
Is spray foam safe in a home?
Cured foam is stable. During spraying and curing the area needs ventilation and staying out of the space, and we explain the timing before we start.
Can spray foam be used with the vapor barrier?
Yes. Foam at the rim joist works together with wall insulation and the liner as part of one sealed system.
Related services
Often paired with this
Crawl Space Wall InsulationRigid foam on the foundation walls for a warmer, tighter space.See the service 
Crawl Space EncapsulationA sealed, dry, clean crawl space that stops damp air before it reaches your floor.See the service 
Pipe and Wire Penetration SealingClose the small gaps around pipes and wires that leak air and let pests in.See the service Where we work
Find rim joist spray foam insulation near you
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Thinking about rim joist spray foam insulation?
Call or text, or send the form. Tell us what you have noticed and we will tell you how we would handle it.