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The 10 Best Insulation Contractors in Charleston (2026)
As Charleston homes age and new construction spreads, proper insulation is essential for comfort, energy efficiency, and moisture control. This list ranks the ten best insulation contractors serving the Charleston area using a straightforward, transparent method: we calculated a Bayesian-style score from each company’s Google average rating and number of reviews to balance quality and reliability. The roundup was updated in 2026 to reflect recent feedback and activity. Whether you’re retrofitting an older house, finishing an attic, or building new, these locally reviewed firms represent the top-rated options on Google across the region.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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Charleston Roofs and Windows
Charleston Roofs and Windows comes out on top because it pairs an impressively high Google rating with the largest review volume on our list — 4.9 from 680 reviews — giving it strong weight under our scoring method. The company is listed as an Insulation contractor and is based in Ladson, and its name suggests a broad exterior focus that many homeowners seek. In a ranking driven by Google average scores weighted by review count, that combination of stellar rating and substantial review total put it in the No. 1 spot.
The full ranking
Shine Construction, LLC
Shine Construction, LLC has a perfect 5.0 rating on Google based on 44 reviews and is categorized as a General contractor, with an address in Charleston.
44 reviews
Ecofoam Insulation and Coatings
Ecofoam Insulation and Coatings carries a 5.0 Google rating from 26 reviews and is listed under Insulation contractor; no address is shown on the Google listing.
26 reviews
Carolina Energy Conservation
Carolina Energy Conservation is rated 4.8 on Google with 297 reviews and appears as an Insulation contractor; the listing shows an address in Myrtle Beach.
297 reviews
Taylor Locklear Drywall – Charleston, SC Drywall
Taylor Locklear Drywall — Charleston, SC Drywall posts a 4.9 Google rating from 32 reviews and is categorized as an Insulation contractor, with a Folly Beach address.
32 reviews
Ecofoam Coatings
Ecofoam Coatings holds a 4.8 Google rating across 92 reviews and is classified as an Insulation contractor located in Hardeeville.
92 reviews
Southern Industries Home Improvements
Southern Industries Home Improvements has a 4.7 Google rating from 777 reviews and appears under Insulation contractor; its address is listed in North Charleston.
777 reviews
New Leaf Sprayfoam
New Leaf Sprayfoam maintains a 5.0 Google rating based on 10 reviews and is listed as an Insulation contractor in Hanahan.
10 reviews
Extreme Spray Foam of Charleston
Extreme Spray Foam of Charleston is rated 4.8 on Google with 25 reviews and is categorized as an Insulation contractor; no neighborhood is shown on the listing.
25 reviews
USA Insulation of Charleston
USA Insulation of Charleston carries a 4.9 Google rating from 11 reviews and is listed as an Insulation contractor with an address in North Charleston.
11 reviews
Frequently asked questions
How should I choose an insulation contractor?
Start by checking online ratings and the number of reviews to gauge consistent performance. Confirm the contractor carries appropriate licenses and insurance, ask for references or recent project photos, and get multiple written estimates to compare scope and materials.
What should I check before hiring an insulation contractor?
Verify the company’s insurance and any required local licenses, and ask how they handle air-sealing and ventilation as part of the job. Also request a written scope of work that lists materials, R-values, cleanup, and any warranties or guarantees.
When is the best time to call an insulation contractor?
Contact a contractor when you notice drafts, uneven temperatures, rising energy bills, or when planning a renovation that exposes walls or attics. It’s also a good idea to schedule assessments in mild weather before major seasonal heating or cooling needs begin.
How was this ranking of insulation contractors created?
The list is built from Google business listings using a Bayesian-style score that combines each company’s average Google rating with its number of reviews. That approach favors both high scores and substantial review volume to balance reliability and quality.