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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon656
    Verified drywall insulation services reviews

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

Avatar for Standard Insulating Company
Standard Insulating Company
5.0(
140
)
Blown-In Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

In business since 1945

Free estimates

Emergency services offered

"Duke Energy listed this firm on it's website as a go to for an energy efficiency audit. ...pleased with the information I learned from Marc during the audit, I secured their service to install insulation in the attic, crawl space, interior walls, and punctured drywall to blow insulation into exterior walls. Best investment, outstanding professionalism, and top-notch customer service. Paulo made magic happen --- twice --- to get this job done and done on schedule. I was beyond happy! Now utility bills are more than 2/3 less than before."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time1 day
5 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Behr Insulation, LLC
Behr Insulation, LLC
5.0(
8
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Behr was fantastic! Nick and Dakota were extremely professional and provided a fair quote. They removed the old insulation, installed new insulation in my attic, and sealed all the gaps to help improve my heating efficiency. I have nothing but positive things to say about their work."
Response time8 hrs
Response rate95%
22 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
412
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"From the initial visit with the salesman to the production coordinators to the project managers to the boots on the ground (or roof) my experience with Home Genius Exteriors has been amazing! Tony, the Project Manager, is incredibly knowledgeable and personable. He took the time to walk me through every phase of my roof and siding replacement. He was very responsive, even during off-work hours. He addressed every concern I had and was thoughtful in his responses. He was very thorough when conducting inspections, identifying action items I didnâ t see, even if it meant additional work for his field crew at no extra cost. I canâ t say enough about the field crews for both my roof and siding replacements. They were incredible and they didnâ t treat my house as â just the next jobâ . They catered to my houseâ s needs, worked extremely efficiently, and did everything I asked of them. I would highly recommend Home Genius Exteriors for roof, siding, and gutter needs!"
Roofing
Roofing
Roofing
Roofing
Roofing

+79

Recommended by97%of homeowners
Avatar for GSM Services
GSM Services
4.7(
106
)
Blown-In Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

In business since 1927

Free estimates

Emergency services offered

"Excellent work done by Scott. Everything explained. Cleaned debris out of units. Wore booties while in our home. Changed filters and showed me a long list of all the other maintenance he did on the units. Have used this company for over 25 years."
New Air Conditioners
AC System Replacement in Charlotte, NC
Dust and debris from ductwork pulled into the duct cleaning machine
Ductless Mini Split Installation
AC Install Gastonia

+62

Response time1 day
40 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Drape the space
Drape the space
5.0(
9
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Jeffrey and his crew did an amazing job with my attic. They prepped the home perfectly before starting any work, removed the old insulation, air sealed the attic, and added in the new blow in insulation, they were thorough, tidy, and my home feels better than ever! We have animals that are family to us and they were responsible and respectful with them as well, closing gates and doors where applicable."
Attic restoration
Attic restoration
Attic restoration
Attic restoration
10 neighbors recently requested a quote
Avatar for Flood Medics Restoration, LLC.
Flood Medics Restoration, LLC.
5.0(
6
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, NC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Called Flood Medics to repair water damage behind hot water heater & bathroom.. David came & explained step by step on what the process was.. Kevin & Leander came promptly and worked diligently with covering up house items while they cleaned up & removed the wet walls? All 3 of these gentlemen were very professional, kind and courteous. Would highly recommend this company to anyone?"
Project
Project
Project
Project
Project

+3

9 neighbors recently requested a quote
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Drywall Insulation FAQs, answered by experts

Only use spackle on plaster walls when the imperfection is small. It’s best used for nail holes or small dings in the plaster. Spackle dries quickly, allowing you to continue the repair process shortly after using it. Plaster can be tricky to repair, though, so if you run into issues, call a pro so that you don’t risk further damage.

Plaster is a beautiful finish but is labor-intensive to install and remove. It’s vulnerable to cracking and more sensitive to moisture variance than drywall. Installing plaster on a new wall is an expensive process that can take days to weeks, depending on the scope. Removing a plaster wall can also be quite expensive and time-consuming.

Knowing what causes drywall damage can help stop it before it starts. Here are some of the most common causes of drywall damage: 

  • Water damage from roof leaks or leaky pipes. 

  • Small holes caused by doorknobs, minor accidents, and rodent infestations. 

  • Wall dents stemming from moving furniture and minor accidents. 

  • Wall cracks that form from a settling foundation or seismic activity. 

  • Nail pops from nails and screws in the walls. 

  • Large holes that are caused by accidents with heavy objects, children and pets, or sporting equipment.

Drywall insulation costs around $1,800, on average, but prices can range from $500 to $4,500, depending on a few different factors. The following things are important considerations to make when pricing out your insulation project:

  • Square footage of insulation

  • Type of insulation 

  • Climate in your area and the insulation R-value required

  • Whether or not your walls are already finished

  • Accessibility of the area 

  • Whether or not you need old insulation removed first

When sanding drywall mud, you’re going to create a very fine dust that may contain silica. Silica dust contains crystalline silica, which can cause long-term illnesses for people who inhale it in significant quantities. Wear a mask while sanding drywall. Then dampen a drywall sponge to wipe the dust off the drywall, helping to reduce the amount of dust that may become airborne.

The Cornelius, NC homeowners’ guide to drywall insulation services

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