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TRUSTED BY DUNCAN, SC HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon113
    Verified drywall insulation services reviews

Top-Rated Drywall insulation pros in Duncan - Updated Nov 2026

Avatar for C & M Insulation, LLC
C & M Insulation, LLC
4.8(
135
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Duncan, SC and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"C & M Insulators did and excellent and professional job. Fair price came early finished the job and gave me advice on what they found in my crawl space. Would definitely hire them again."
Insulation Product
Home with NO Insulation
No Pic
Batts in Walls
No Pic

+9

Response time5 hrs
14 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Koala Insulation of Greenville
Koala Insulation of Greenville
4.8(
90
)
Blown-In Insulation - Install or Upgrade

Serving Duncan, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"4 days ago NEW Thank you so much for fixing and adding new insulation to our home. Rafal and eddie did a wonderful job insulating up our attic and fixing the insulation and adding new stuff in the garage and crawl space. If I ever needed to have a insulation job done I know who to call."
Fiberglass Batt / Blanket Insulation
Solar Attic Fan
Spray Foam
Home Air Sealing
Blow-In Insulation

+140

Response time1 day
Response rate89%
28 neighbors recently requested a quote
EnergySmith Home Performance
4.8(
164
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Duncan, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Credit card accepted

"Hired to insulate the garage roof and 2nd floor attic. Blown wool insulation to really great levels and spread evenly. Team worked on a warm august morning and got things done quickly. Only thing i don't like is the make-shift attic stair tent using taped together silver insulation blanket. Insulation tends to fall out of the attic and on the floor each time i remove the tent to enter the attic."
Response time2 days
38 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Insulation Commandos of Greenville
Insulation Commandos of Greenville
5.0(
5
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Duncan, SC and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

Let’s Work Together On Your Home\n\nWhether you know exactly what you want or you’re just starting to think about how our services might help your home, we’re happy to answer your questions, come out for a free in-person estimate, and show you how the insulation experts can make a difference in your home.\n

Project Photos
Project Photos
Project Photos
Project Photos
Project Photos

+1

103 neighbors recently requested a quote
Avatar for Matias Insulation Services LLC.
Matias Insulation Services LLC.
5.0(
33
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Duncan, SC and surrounding areas

In business since 2021

Free estimates

Small jobs welcome

"The Matais team ripped out the old insulation, cleaned the space & installed new insulation as well as vapor barrier. Also installed additional blown in insulation in attic. Accomplished all in one day. Good price & hard workers. Very happy with our experience."
Crawlspace
Crawlspace
Crawlspace
Crawlspace
Crawlspace

+34

Response time10 hrs
Response rate100%
Recommended by87%of homeowners
Avatar for All Foam Insulation of the Carolinas
All Foam Insulation of the Carolinas
4.5(
13
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Duncan, SC and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"I like working with this company. Rob Blake, the owner, is very professional. I called him because a hot water heater problem had revealed that the foam from a 2011 job had not filled the cavity in the wall as thought during the 2011 job.  I did not know if this only applied to the water heater closet or to the entire cabin.
Rob's response to my call was "That's why you have a lifetime warranty!"  Wow.  Not used to that.  Rob came out the next day and crawled around under the cabin and poked wires into outlet cavities and showed me that the foam was only thin in the water heater closet, and given the construction of the closet, that made sense.  Rob wanted to schedule a return within a few days to fix the problem before the weather got cold.  I asked him to bid the top floor of my house to do at the same time.
The fix was free and the top floor of my house was 3200.  So altogether, I have spent $7100 with retrofoam, to insulate three houses; one about 750 square feet; one about 450 square feet and one about 4,000 square feet.  
As with the first job, the workers were polite, professional, hardworking and very thorough. They were very nice about things like taking down a bird feeder for me - not part of their job at all, and they were happy to help me with it.  They do have to come inside to listen for something when certain walls are being injected; they were always very polite, wiped their feet and so on.  They worked from 8 to 5 every day, and they did an excellent job of cleaning up after themselves.  The job was planned for two days but took three.  They were very inobtrusive with my renter whose water heater closet they redid.  In fact, they removed some fiberglass insulation near the water heater placed during the water heater repairs not only because it was ineffective but because the type that was there was a potential fire hazard (the paper side was near the water heater).  This is pretty typical of them; they have gone above and beyond on every job for me.  They really do work as if they were insulating their own homes.  Very nice.
The only almost-rough spot is that my cabin and my house had to be drilled right through the exterior siding, and after the holes were plugged, we needed to repaint the house.  The 750- square foot house needed to be painted anyway so I didn't mind, and I planned the big house job to coincide with a painting soon after because I remembered that from last time, and it also was due for a repainting.  Rob tells me that only five houses so far have had to be done this way; but I would ask him before the job if the house will need to be repainted as it would have been a pretty rude shock to not realize this ahead of time.  I understand that most jobs do not result in a repainting, this was about the type of siding we had on our houses.
In fact. Rob offered to supply the labor to restain the plugs to match the siding, but since we are repainting soon, we didn't see any need.
The insulation has been astonishingly effective.  Not only in retaining temperature, but also the houses are now so very quiet.  This has been an excellent investment in our house, and we are very happy with the outcome.  Also, this is a very professional, easy to deal with company.  


"
Recommended by100%of homeowners
Avatar for Advanced Spray Foam and Coatings, LLC
Advanced Spray Foam and Coatings, LLC
4.7(
21
)
Injection Insulation - Install

Serving Duncan, SC and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Value for the money invested was extremely high, would strongly encourage those needed spray foam insulation in their homes or businesses to contact Advanced Spray foam for a price. Great people to deal with !"
Response time2 days
Recommended by95%of homeowners
Avatar for Moisture Solutions LLC
Moisture Solutions LLC
4.8(
22
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Duncan, SC and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"We had an issue where our subfloor was saturated with moisture and completely covered our crawlspace with mold. We thought we were going to have to rip out our kitchen and subfloor. Moisture Solutions responded quickly and offered short term and long term solutions to our situation. We didn't have to rip anything out, saving tons of money, and now our crawlspace looked better than the day we purchased our home."
mold removal and moisture barrier install
Mold removal and prevention
Mold remediation and prevention
Mold Testing and Remediation Project
Mold Testing & Remediation Project

+160

Recommended by100%of homeowners
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Drywall Insulation FAQs, answered by experts

You can usually tell if you have plaster or drywall by touch (plaster is harder, colder, and smoother than drywall) or by tapping on it (drywall sounds hollow, plaster does not). If you still cannot tell, peek under an outlet cover and check the cut edges. The rough edges show the composition of the wall. You will see either drywall (two paper sheets sandwiching gypsum material) or only plaster material (no paper sheets).

Yes, drywall can hold a 50-pound TV. However, when mounting a TV, you’ll either need to attach it to wall studs or use drywall anchors. If you use anchors, make sure to buy a type that can hold at least 50 pounds. Molly bolts, threaded anchors, and toggle bolts are all good options. For extra support, you can also install a wall mounting plate with the anchors.

Venetian plaster is a highly durable wall finish that becomes a rock-like substance once dried, making it last longer than most other wall finishes. Its lifespan can range from decades to centuries, potentially lasting a lifetime. Key factors influencing its longevity include the quality of the initial application, whether it's properly sealed against moisture, and how the wall is maintained and treated (e.g., how often it is touched or bumped). Due to its mineral content, it can also develop a patina over time.

Your walls are likely cracking due to fluctuations in the temperature outside. Drywall tends to expand and contract when temperatures and humidity levels change, and this repeated movement can lead to cracks in your walls, particularly around door frames. If you have multiple diagonal cracks, you may want to have your foundation inspected, as cracks can also be a sign of a bigger issue.

Drywall mudding can be done in one day if the project is small and the desired effect isn’t too complex. If you need multiple layers of mud, one day may not be realistic. But a single room that requires little more than joint compound on the seams and screws can be done in a day or two.

The Duncan, SC homeowners’ guide to drywall insulation services

From average costs to expert advice, get all the answers you need to get your job done.