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Insulation Services in Dover, DE
Compare 27 insulation services contractors near you in Dover and surrounding area with an average rating of 4.5/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 22, 2026
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Other Businesses in This Area
Coastal Construction Delaware
5.0Delaware Spray Foam
5.019+ years onlineDelmarva Spray Foam
5.011½+ years onlineHome Genius Exteriors
5.0~8 years onlineJs drywall llc
5.013+ years onlineAmira Contracting Inc
4.98½+ years onlineFoam Works LLC
4.9~20 years onlineKoala Insulation of Newark
4.97+ years onlinePro-spect Inspection Services DE
4.93½+ years onlineRidge & Valley Metals Roofing & Siding Supplies
4.8Dixie's Insulation, LLC.
4.73+ years onlineDrywall Anthony Construction LLC
4.6ZK&D Fireplace Cleaning & Chimney Sweep And Repair in DOVER LLC
4.6CFUH Attic Insulation & Roofing Services Inc, DE
4.5ZND-SXC Attic-Solution & Insulation's & Roofing Service Magnolia, DE
4.5Delmarva Buildings
4.413+ years onlineDelmarva Insulation
4.322½+ years online1st State Insulation
4.111 years onlineAccurate Insulation
3.8~12 years onlineCLH Attic Insulation & Roofing Services Milford, DE
3.8~28 years onlineSpray Foam Insulators, LLC
3.0~20 years onlineGede Insulation
2.914½+ years onlineInsulation Services in Nearby DE Cities
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About Insulation Services in Dover
Insulation services cover attic, wall, floor, and crawl space insulation using materials like fiberglass batts, blown-in cellulose, spray foam, and rigid board. Proper insulation reduces heating and cooling costs and improves comfort year-round.
Typical costs: Attic insulation runs $1,500–$4,000 for a typical home. Spray foam for a crawl space or basement is $2,000–$6,000. Whole-home insulation upgrades can be $5,000–$15,000.
Common projects include:
- Attic insulation upgrade
- Spray foam crawl space or basement
- Wall cavity insulation
- Weatherization and air sealing
- Garage insulation
Simple insulation upgrades in existing walls and attics usually don't require permits. If the work involves modifying structure or electrical, permits may apply.
Frequently Asked Questions
- How much does insulation services cost in Dover?
- Blown-in attic insulation to bring an older home up to current R-value standards runs $1,500–$4,000. Spray foam insulation for a crawl space or rim joist is $2,000–$6,000. Many utility companies offer rebates for insulation upgrades — ask your installer about available incentives.
- How do I find a reliable insulation services contractor in Dover?
- A good insulation contractor starts with an energy audit or at least an R-value assessment of your current insulation. They should recommend the right material for each area (spray foam for air sealing, blown-in for attics, batts for accessible wall cavities).
- Do I need a permit for insulation services in Dover?
- Adding insulation to existing spaces (attic blow-in, wall injection) typically doesn't require a permit. If the project involves structural access, like opening walls, permits may be needed.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Dover and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.