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3+ years online4.9
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
5.019½+ years onlineDelmarva Spray Foam
5.0~12 years onlineHome Genius Exteriors
5.0~8 years onlineJs drywall llc
5.013+ years onlineAmira Contracting Inc
4.98½+ years onlineFoam Works LLC
4.920 years onlineKoala Insulation of Newark
4.97½+ 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
3.812 years onlineCLH Attic Insulation & Roofing Services Milford, DE
3.828 years onlineSpray Foam Insulators, LLC
3.020 years onlineGede Insulation
2.914½+ years onlineInsulation Services in Nearby DE Cities
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Insulation Services in Dover, DE
Dover DE insulation upgrades pay back fast given Delmarva Power rates and DE's heat-cold swings. Most pre-1990 Dover homes have R-19 to R-30 attics — well below the modern R-49+ target. Air sealing before insulation matters in older homes. Delmarva Power rebates available. NeedInstall connects you with Dover insulation contractors who handle Delmarva paperwork, blower-door testing, and proper detailing.
Dover attic top-up to R-49+: $1,800-$4,500. Wall dense-pack: $4,500-$11,000 retrofit. Basement spray-foam: $4-$7 per board foot. DE requires a state contractor license. Delmarva Power rebates ($300-$1,500). Blower-door test ($300-$500) often required.
Frequently Asked Questions
- Worth on natural gas?
- Yes — DE heating loads. Payback 4-7 years.
- Delmarva rebate?
- $300-$1,500 for qualifying upgrades.
- Spray-foam?
- For basements and rim joists.
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.