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TRUSTED BY GILROY, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon98
    Verified drywall insulation services reviews

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

Bay Valley Insulation Inc
4.7(
46
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"I didn't write down his name, but the person I spoke with on the phone gave me good advice on what to check for to see if there was anything amiss. He didn't offer to come over (their office is not close to my house) but I felt his approach was very reasonable and it was helpful."
Additional Photos
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Nor-Cal Insulation, Inc.
Nor-Cal Insulation, Inc.
4.5(
15
)
Blown-In Insulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

Approved

In business since 2009

Free estimates

Small jobs welcome

"Needed to insulate my house before closing escrow, called for a quote on a Monday and they were insulating the very next day. The owner Luis Knows his stuff, very knowledgeable. Would recommend. 👍🏼👍🏼"
Insulation / Spray Foam
Mineral Wool Insulation
Attic Fiberglass Batts
Subfloor Fiberglass Batts W/ Netting
Open Cell Spray Foam / Fiberglass Batts

+5

Response time1 day
Response rate93%
15 neighbors recently requested a quote
Avatar for Attic Pros
Attic Pros
4.6(
102
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Wais and his team did a terrific job removing old, shoddy, blown insulation in our attic, added new batt insulation, rat proofed it, reapplied insulation around the duct work, added a new attic fan, all in record time. Very pleased with how careful they were setting up and removing every bit of waste."
Fortify your home’s attic with high-quality insulation and strategic rodent-proofing.
Lock in warmth and lock out pests with expert attic insulation and rodent-proofing.
Transform your attic into a pristine, energy-efficient area with our insulation and sanitation services.
Maximize your attic’s efficiency and hygiene with expert insulation installation and sanitation services.
Create a healthier living space with expert attic insulation installation and deep sanitation.

+3895

Response time9 hrs
Response rate100%
13 neighbors recently requested a quote
Avatar for AtticElite Insulation Solutions
AtticElite Insulation Solutions
4.6(
27
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Gilroy, CA and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"I actually had both my attic and walls insulated. Great price, on-time, efficient, clean-up and communication. Unusual from most contractors today. I would highly recommend these guys. Milo was our contact."
Get $500 Off Rodent Proofing
Get $500 off crawl space cleanup.
Get $500 off rodent proofing.
Spray Foam Insulation
Before Attic Clean Up

+77

Response time2 days
10 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for American Attics
American Attics
5.0(
8
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallInsulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"American Attic was everything they promised. Met with the owner , Sam, within a day to get a quote for removal of old insulation, rodent control and install of new insulation. He was professional and explained everything in detail of what was work was going to be done and how long it would take. We scheduled within a week at a reasonable price. His crew were neat, organized and finished on time! We were notified of some extra things that were found while they were on the job but were not pressured to have those things done. We recommend American Attic to friends or family and would definitely use them again."
Additional Photos
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Additional Photos

+52

Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Ideal Attic Insulation, Inc.
Ideal Attic Insulation, Inc.
4.8(
6
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Gilroy, CA and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"I received several estimates from people but I chose Ideal Attic was my choice for cost and time of day when they could begin working on it which was the very next day. They explained to me what they were going to do and told me when they should be finished. I recommend them to anyone needing heating and insulation work."
Response time3 days
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Air Sharks
Air Sharks
5.0(
12
)
Blown-In Insulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

Air Sharks delivers expert HVAC services to homeowners across the South Bay, including installation, repair, and maintenance of top brands like Daikin and Lennox. We also specialize in improving indoor air quality with professional ductwork inspection and cleaning.\n\nOwner Khaled Alsaka built Air Sharks on a passion for transforming the HVAC experience through education, collaboration, and top-tier products. We provide personalized consultations and tailored heating and cooling solutions, taking pride in our craftsmanship, attention to detail, and commitment to five-star service.

Daikin Heat Pump Install
Daikin Heat pump Install and Duct Work
Before picture.
BEFORE
Daikin Heat Pump Install

+22

Response time1 day
Response rate100%
21 neighbors recently requested a quote
Avatar for Attic Masters insulation Services
Attic Masters insulation Services
4.8(
111
)
Blown-In Insulation - Install or Upgrade

Serving Gilroy, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"i can only say good things about working with Attic masters. Great communication, They came on time, protected our floors and hallway from insulation dust, took pictures of the before and after for us so we can get the rebate. overall, very easy and stress free company to work with. I would definitely use again, it was a pleasure to work with true professionals."
HVAC Duct Replacement
Insulation Installation & Attic Cleaning
Air Sealing & Rodent Proofing
New Construction
Vapor Barrier Install

+204

Recommended by94%of homeowners
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Drywall Insulation FAQs, answered by experts

There are a few ways to figure out if your walls are plaster or drywall, but the pushpin method is probably the easiest option. To try it, choose a part of your wall where you can insert a pushpin or thumbtack without leaving an obvious mark. If it goes in easily, you have drywall. But if the wall is tough to penetrate, that’s plaster.

If you already have plaster walls and ceilings, adding new plaster costs $2 to $10 per square foot. For an average-sized room, that would come out to $1,200 to $10,000. However, the cost to replace plaster with drywall is higher—running between $720 and $1,250 for a 10-by-8-foot wall or ceiling (not including drywall finishing).

While a normal moisture level for drywall is between 5% and 12%, replacement is recommended if you get consistent readings above 17%. At this level, the drywall is likely too compromised by extensive moisture damage to be considered safe. You can replace either the entire sheet or just the affected section. If you are unsure after a visual inspection, it is best to have a contractor or water restoration provider use a professional moisture meter to get an accurate reading.

Which style of corner bead you choose—whether metal or paper-faced—depends on your preference and if you’re comfortable using metal-cutting tools and a hammer. Metal bead offers superior strength and durability but its installation is slightly more involved. We’d say for most cases, it’s better to use metal bead but if you’re not comfortable working with metal, paper-faced bead will work just fine. 

While every home has its own unique needs, ceiling drywall installation typically follows a staggered or stepped pattern to enhance structural integrity and reduce the visibility of seams. Starting from one corner, sheets are placed perpendicular to the ceiling joists, with the ends of adjacent sheets meeting along the center of the joist. The next row begins with a half sheet, ensuring joints don't align vertically. This alternating pattern, combined with proper taping and mudding, creates a seamless appearance and strengthens the ceiling structure, minimizing the risk of cracks over time.

The Gilroy, CA homeowners’ guide to drywall insulation services

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