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Find Spray foam insulation pros in Charleston

Avatar for USA Insulation of Charleston
USA Insulation of Charleston
5.0(
5
)

Serving Charleston, SC and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

USA Insulation has been providing homeowners with energy efficient insulation since 1985. Our trained, professional installers, service Charleston County, Berkley County & Dorchester County. We pride our company on reliability, great communication, integrity and quality work. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Please contact us today to set up a free consultation

23 neighbors recently requested a quote
Avatar for Apex Home Innovations, LLC
Apex Home Innovations, LLC
4.8(
25
)

Serving Charleston, SC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Work was completed to a very high standard. Every step of the way, they were more than willing to show exactly what was being completed. Work was completed very efficiently and quickly. Would definitely recommend for any attic insulation projects!"
Response time5 days
44 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Carolina Energy Conservation, LLC
Carolina Energy Conservation, LLC
4.2(
118
)

Serving Charleston, SC and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"He actually pointed out to me that I needed more insulation over the whole home as over a period of time it packs down. So I let him do the whole home as well as garage that I had originally wanted a quote on."
Kitchen Solatube Before
Kitchen Solatube After
Leaky Can Light
Sealed Can Light
Master Bedroom (Before Solatube Install)

+22

Response time1 day
93 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Barrier South
Barrier South
4.8(
15
)

Serving Charleston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Credit card accepted

"The process to remove the blown in insulation and the install of the foam was a 2 day process. The guys were efficient with their time and did a great job. I am happy with the results"
Attic Insulation - Open Cell - nominal 5" - R
Attic Insulation - Open Cell - nominal 5" - R
Attic Insulation - Open Cell - 10.5" - R-38
Exterior walls - open cell walls - R-13 value
Shaved flushed for sheet rock.

+4

Response time2 days
172 neighbors recently requested a quote
Recommended by21%of homeowners
Foam Tech Professionals, LLC
4.4(
11
)

Serving Charleston, SC and surrounding areas

In business since 1999

Free estimates

Small jobs welcome

"This was the most pleasant experience we have ever had with a home improvement project. All personnel were true professionals; always on time; treated our home and its contents with extreme care; priced their product very reasonably; and rendered what is perhaps, the highest quality workmanship and product we have ever experienced. Foam Tech is the leader in their field. We highly recommend them and are oh so glad we chose them."
 Foam on ducting in crawl space
 Foam in crawl space
 Foam on exterior wall
 Our foam insulation truck
Recommended by100%of homeowners
Avatar for Energy One America, LLC
Energy One America, LLC
3.9(
69
)

Serving Charleston, SC and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"Brian,the sales rep, was very professional. Their crew worked under extremely hot conditions from the sun and the heat generated by the foam application. Despite the conditions, they completed our large attic in just over 5 hours. I would recommend this company to anyone looking for this product in their home."
 Open Cell Spray Foam Insulation
  Open Cell Spray Foam Insulation
Closed Cell Spray Foam Insulation
 Closed Cell Spray Foam Insulation
 Energy One America Trucks

+8

Recommended by95%of homeowners
Showing 1-10 of 41
FAQs for spray foam insulation projects in Charleston, SC

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.