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Metro Detroit

Rigid Foam Insulation in Metro Detroit

Compare verified contractors for rigid foam board on basement walls, exterior sheathing and roofs. Get free quotes, check licenses, and hire with confidence.

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0Insulation Contractors profiles
6Metro counties
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Local to Metro Detroit: Detroit, Wayne, Oakland, Macomb and more
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Before you hire

Rigid Foam Insulation in Detroit: what to expect

Rigid foam insulation in Detroit means foam board, usually XPS, EPS or polyiso, installed on basement walls, under slabs, as continuous exterior insulation under new siding, or above a roof deck. It is common in basement projects and re-siding jobs in Detroit, Dearborn, Livonia and Shelby Township, where adding a continuous layer outside the studs cuts heat loss through framing.

Each type has strengths: EPS is economical and works well below grade, XPS resists moisture, and polyiso has high R-value per inch but loses some performance in deep cold. Seams are taped or sealed so the board also acts as an air barrier. On exteriors, foam changes window and door trim depths and flashing details, so the siding and window work have to be planned together.

For basement projects see basement insulation. Exterior foam is often installed with new siding. Compare Metro Detroit insulation contractors for quotes.

What a proper job includes

  • Selection of board type and thickness for the location
  • Surface preparation and moisture check on concrete
  • Boards fastened or adhered with sealed or taped seams
  • Rim joist and edges sealed to stop air movement
  • Flashing and trim details planned for exterior foam
  • Thermal barrier plan where foam faces living space
  • Written scope showing product and areas covered

What drives the price

  • Area and board thickness
  • Board type: EPS, XPS or polyiso
  • Location: basement, exterior wall, roof or under slab
  • Fasteners, adhesives, tape and sealants
  • Drywall or other thermal barrier over interior foam
  • Window, door and trim changes on exterior jobs
  • Coordination with siding or roofing trades

Rebuild Detroit does not publish price ranges. Get written quotes for the same scope and compare.

Permits and licensing in Michigan

Rigid foam installed as part of a basement finish, re-siding, re-roofing or addition is usually covered by that project's building permit, and some municipalities require a permit for siding or roofing work. Confirm with the local building department (BSEED in Detroit). Michigan's residential code generally requires interior foam plastic to be covered by an approved thermal barrier such as drywall.

Paid residential insulation work above a threshold set by state law requires a LARA license: a Maintenance & Alteration Contractor license that lists Insulation, or a Residential Builder license. Check the number on the LARA lookup.

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How to compare quotes

  1. Ask which board type and thickness they recommend and why.
  2. Confirm how seams and edges are sealed.
  3. Ask how foam will be covered to meet code indoors.
  4. For exteriors, ask how windows and trim will be flashed.
  5. Check the license on the LARA lookup and ask for proof of insurance.

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Common questions

Rigid Foam Insulation FAQ

It depends on the area, board type and thickness, location, fastening and sealing, any thermal barrier, and trim or flashing changes on exterior jobs.
EPS and XPS are common below grade because they handle moisture. Your contractor should match board type and thickness to the wall and code.
Inside living spaces, foam plastic generally needs an approved thermal barrier such as drywall. Ask the contractor how the job will meet code.
Yes, and it is a good time to do it. Plan window and door trim, flashing and siding fastening around the added thickness.

Get rigid foam insulation quotes from local pros

Compare Metro Detroit insulation contractors and confirm credentials, scope and cost drivers before you hire.

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