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TRUSTED BY WILMINGTON, DE HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon428
    Verified drywall insulation services reviews

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

Avatar for Insulation Guyz
Insulation Guyz
5.0(
82
)
Blown-In Insulation - Install or Upgrade

Serving Wilmington, DE and surrounding areas

Approved

In business since 2006

Free estimates

Small jobs welcome

"Mike and his assistant were very professional. They worked until eight at night to complete the job, (excellent work ethics ) both were very courteous and pleasant and a pleasure to have working at my home. The insulation in my pole barn turned out perfect, and I couldnâ t be happier. I will use them again for future projects. Rob W"
Response time2 days
3 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for G.E.G. Enterprises, LLC
G.E.G. Enterprises, LLC
4.4(
205
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Wilmington, DE and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Credit card accepted

"G.E.G. did a great job installing blow in insulaltion in my attic. They were quick and prepared. My only wish is they would have been able to pull up more of the unused attic flooring and gotten more insulation under it, though they were able to increase insulation in other areas."
Blown-In Attic Insulation
Response time1 day
50 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for MSJ Attic Insulation
MSJ Attic Insulation
5.0(
7
)
Blown-In Insulation - Install or Upgrade

Serving Wilmington, DE and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Did a great job on the insulation however they left a hole in the ceiling when they dropped something on the attic floor. Not a big deal but they need to be careful. Overall, amazing work they do all kinds of insulation and they also install radiant barriers on roof joists. They are reasonably priced and the crew is super friendly, pleasure to work with."
Business card
Poorly insulated
Poorly insulated
In progress
Radaint barrier

+6

43 neighbors recently requested a quote
Avatar for Master Attic, LLC
Master Attic, LLC
4.8(
61
)
Blown-In Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Wilmington, DE and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I RECENTLY HAD MY ATTIC INSULATION REPLACED BY MASTER ATTIC. ALEX CAME OUT RIGHT ON SCHEDULE AND GAVE ME A FAIR PRICE. ( I DID HAVE 4 OTHER ESTIMATES) THE CREW LEAD BY ROBERTO WAS AMAZING. THEY WERE VERY CONSIDERATE, CAREFUL IN MAKING SURE THE AREA WAS SEALED OFF AND WERE VERY CAREFUL OF MY PERSONAL BELONGINGS. THEY DID A GREAT JOB IN REMOVING OLD INSULATION , VACUUMING OUT THE ATTIC ,SPRAYED AREA AND SEALED ANY OPENINGS. BEFORE THEY BROUGHT IN NEW INSULATION, THEY ASKED ME IF I WISHED TO TO VIEW THE ATTIC AND I DID. I WAS AMAZED EVEN AT THIS POINT, HOW CLEANED EVERYTHING LOOKED . (THIS INSULATION HAD BEEN UP THERE FOR 70 YEARS) NEW INSULATION WAS INSTALLED AND IT LOOKS GREAT. THE CREWED CLEANED UP EVERYTHING , EVEN VACUUMED THE AREA IN THE ROOM. ALL BAGS OF OLD INSULATION WERE REMOVED PROMPTLY AND I WOULD HIGHLY RECOMMEND THEM TO ANYONE."
Crawlspace remediation, new batt insulation and moisture barrier encapsulation
Old insulation removal and replace with new batt insulation
Rodent hole on corner of roof
New Blown-in insulation
Crawlspace remediation, new insulation & moisture barrier encapsulation

+106

Response time2 days
Response rate100%
16 neighbors recently requested a quote
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)
Injection Insulation - Install

Serving Wilmington, DE and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
Response rate100%
135 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
517
)
Blown-In Insulation - Install or Upgrade

Serving Wilmington, DE and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Home genius Exteriors did as great job on my siding the crew answered all my concerns when asked. The crew efficient and very nice. Joseph was good as well very communicative. Overall happy with the service."
Windows
Windows
Windows
Windows
Windows

+69

49 neighbors recently requested a quote
Recommended by49%of homeowners
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Drywall Insulation FAQs, answered by experts

Yes, a fan can help drywall mud dry faster by improving air circulation and reducing humidity in the room. Drywall mud dries through evaporation, so increasing airflow speeds up this process. However, you should position the fan to blow across the room rather than directly on the wet mud. This helps prevent drying too quickly, which can cause cracking. You should also use a dehumidifier if high humidity is an issue.

Cracks, water damage, and holes from fixtures or impact.

Most drywall used for interior walls of homes is 1/2-inch thick. This size strikes a balance of being easy to handle and hang while being thick enough for the durability needed on interior wall applications.

Plastering lasts for around 15 to 20 years without needing repairs or maintenance in most cases, and with proper upkeep, plastering can last a lifetime—sometimes more than 100 years. Plaster repair costs between $1 and $3 per square foot, and you may need these services once every 15 to 20 years or so unless you have a harsh climate where humidity changes are a constant issue. You can also opt to skim-coat plaster for between $0.90 and $1.30 per square foot, which may serve you better in the long run.

If your premixed drywall mud is dried out or has begun to set in the bucket, you may be able to revive it by adding warm water and stirring. However, the first and most important step is to scrape off any hard, dried bits of drywall that may have accumulated toward the top of the container and throw them away because they will not easily reconstitute back into the drywall mud mix.

The Wilmington, DE homeowners’ guide to drywall insulation services

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