Alligood Energy
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Insulation Services in Philadelphia, PA
Compare 35 insulation services contractors near you in Philadelphia and surrounding area with an average rating of 4.8/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated May 22, 2026
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Awestruck Spray Foam Pro
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Insulation pros
Spray Foam Partners
7 years onlineAbsolute Spray Foam of NJ
5.013+ years onlineBrelsford Insulation Ltd.
5.016½+ years onlineEco Friendly Heating and Cooling
5.0Individualized Spray Foam Contractor Llc
5.0Mammoth Solutions
5.0~3 years onlineNeff Insulation Inc.
5.0Philadelphia Spray Foam Insulation
5.05½+ years onlineRampart Insulation
5.0RetroFoam of Philadelphia
5.0~3 years onlineSpray Foam Insulation of Philadelphia
5.0AGL Spray Foam
4.913½+ years onlineKoala Insulation of Doylestown
4.97½+ years onlineA&Q Attic Insulation Services & Roofing Services Of Philadelphia, PA
4.8A&U Services & Roofing Services
4.8Philly Spray Foam Insulation | Philadelphia Insulation Contractor
4.83½+ years onlineSpray Foam Pros of Philadelphia
4.83+ years onlineSpray Foam Insulators
4.6~20 years onlineStelwagon Roofing Supply, Inc.
4.6~24 years onlineThe Spray Foam Works Co
4.65½+ years onlineMike Kobithen Roofing & Insulation
4.516+ years onlineUSA Insulation of Philadelphia
4.521+ years onlineInsulation Services in Nearby PA Cities
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Insulation Services in Philadelphia, PA
Insulation services in Philadelphia handle an old-city market with distinctive challenges: 1890s-1940s rowhouses with minimal original wall insulation, Victorian and post-Civil-War homes in Society Hill and Rittenhouse with plaster-and-lath walls, mid-century homes in Northeast Philly, and commercial properties. Typical jobs include blown-in cellulose or fiberglass attic insulation, dense-pack wall insulation for older homes, spray-foam attic conversions, rim-joist air sealing, and commercial thermal retrofits. Mid-Atlantic climate, substantial older housing stock, and historic-preservation rules drive approach.
Residential attic insulation upgrades in Philadelphia run $1,500-$4,500; dense-pack wall insulation for older rowhouses $6,000-$18,000; spray-foam attic conversions $3,500-$12,000. Pennsylvania requires a Home Improvement Contractor registration. Philadelphia L&I permits sometimes apply. Pennsylvania Act 129 and PECO energy-efficiency rebates substantial for qualifying insulation work. Historic district rules apply in designated areas. Older rowhouse dense-pack installation is specialized work — specific equipment and expertise needed.
Frequently Asked Questions
- How much can I save with Philadelphia insulation upgrades?
- Typical 1900s rowhouse upgrade from R-11 to R-49 attic insulation saves 20-30% on heating/cooling costs. Payback period 3-7 years depending on utility rates and fuel type. PECO rebates offset 15-30% of qualifying project costs. Budget $2,500-$5,000 for full attic upgrade.
- What's dense-pack insulation and do I need it?
- Dense-pack cellulose fills wall cavities without drilling large openings from outside. Typical for insulating existing 1900s rowhouse walls without major exterior work. Installation via small drilled holes in each wall cavity. Runs $3-$6 per sq ft of exterior wall.
- Can I spray-foam my Philadelphia attic?
- Yes — closed-cell spray foam provides high R-value per inch and air sealing. Particularly effective for converting unfinished attics to living space. Budget $4,000-$12,000 depending on attic size and foam type. Open-cell foam is cheaper but lower R-value per inch.
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