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TRUSTED BY ONTARIO, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon228
    Verified drywall insulation services reviews

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

Avatar for Everguard Home Insulation Inc.
Everguard Home Insulation Inc.
4.8(
199
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 1959

Free estimates

Emergency services offered

"It is rare these days to find a great company with good values. This is one of those instances; I cannot say enough, good things about the professionalism of the employees at the office and those that showed up on site to install wall insulation. They showed up at the beginning of the two hour window, which was fantastic and explained everything with upfront pricing. We even asked for additional insulation and they were able to accommodate. Our home walls are now insulated and we even noticed a difference right away. From the time of arrival to completion they were nothing but exemplary. Thanks again for running an honest and professional team! Highly recommend to anyone out there looking to insulate your home!!! Notability, they were well below other companies on pricing too!!!"
Additional Photos
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Additional Photos
Additional Photos

+7

Response time2 days
18 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Insulation Labs
Insulation Labs
4.9(
519
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Warranties offered

"Attic Insulation Lab worked at my house adding insulation to the walls in the garage and covered them with drywall. Their price was within our budget and we heard good things about them as well. Eran and his team of 3 additional workers did the whole job and they worked each day till they finished it. The office personal were good too. They were very flex with us in regards to the work hours and days. We do recommend this company and mainly Eran."
Fresh Insulation & New Ducts
Completed installation of solar panels
Roofing Projects
Spray foam insulation Projects
Old Insulation & Debris

+121

Response time11 hrs
Response rate90%
38 neighbors recently requested a quote
Avatar for Alpha Insulation
Alpha Insulation
4.6(
17
)
Blown-In Insulation - Install or Upgrade

Serving Ontario, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Alpha insulation is a good choice. Their installation was great. The guys cleaned up all their mess. Which is a plus for me. Miguel was easy to talk to. I told him what I wanted done to my house and he gave me a great price for what I asked for. So I hired him. I would recommend alpha insulation to friends and family."
Blow In
Insulation Removal and Air Seal
Insulation Removal
Air Seal
Air Seal

+46

Response time3 days
35 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Next Level Insulation
Next Level Insulation
5.0(
7
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Jesus and his crew at Next Level Insulation completed my attic needs (Insulation & cleaning) flawlessly. They are true professionals! Jesus was very responsive in keeping appointments, providing a quote and completing the job. He explained the job they were preforming and kept me informed every step of the way. I truly recommend Next Level Insulation."
attic insulation
New R21 insulation
attic vaccumed
new build
box truck

+33

Response time1 day
Response rate95%
Avatar for Insulation Nation, LLC
Insulation Nation, LLC
5.0(
7
)
Blown-In Insulation - Install or Upgrade

Serving Ontario, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"We had Insulation Nation (Dustin) come to our house to look at our attis insulation; our house was built in the late 70's and I had added more blown-in insulation many years ago. We decided on adding 8" of blown-in insulation to reduce our heating/cooling cost and to reduce the cycling of our HVAC system. They did a wonderful job of sealing any attic leaks, covers for our canned lighting fixtures, built a dam around our whole house fan, added baffles around our soffits, and added the insulation. Nicely done and a professional job. Would recommend using their service."
Air Seal (Mineral wool light covers) and Batt - R38 Attic
Vaulted/Cathedral Ceiling - R43 Combo of RIgid Foam Board and Batt
Same
Full Removal, Radiant Barrier and Replacment
Batt Insulation In Attic Perpendicular Layered

+33

68 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for Insulation Commandos of Southern California
Insulation Commandos of Southern California
4.2(
417
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"After having a new air conditioning system installed, to replace an old inefficient one, we decided to make sure our attic had the correct insulation as well as the appropriate R-value. Since our home was built in the 1950's, the insulation throughout the attic was minimal. We hired Insulation Commandos to survey and provide us with the appropriate solution. The solution involved removal of the old insulation, cleaning the area, and installing the correct insulation based on our homes location. We now believe we can keep our energy costs down and provide less strain on our AC system. Great job team!"
before and aftert insulation install
insulation remocal service
about us
Wrapped trucks
538 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Atticare Construction
Atticare Construction
4.1(
70
)
Blown-In Insulation - Install or Upgrade

Serving Ontario, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"This business is great to work with! They showed up early and got right to work. They laid down protective plastic as we have blown insulation that gets everywhere. They installed attic and subfloor. I thought they would be here all day. They were down in about 3 hours. Quality work, professional and very informative and clean!"
AttiCare Vehicle
Final work
Our team crawling in attic corner
Analyzing and Careful Planning
Cleaned and ready to be insulated

+65

Response time1 hour
114 neighbors recently requested a quote
Recommended by86%of homeowners
Fibers Insulation
5.0(
4
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I couldn't be happier with the experience I had with this company. From start to finish, they were extremely professional, honest, courteous, and respectful of our home. They did an excellent job blowing insulation into our attic, and they made sure to keep everything clean and tidy throughout the entire process. What I especially appreciated was dealing with a family-owned business consisting of a father and his two sons. It's refreshing to see a family take such pride in their work and treat their customers with honesty and respect. Their pricing was also very reasonable, especially considering the quality of their work. It's not often you find a company that checks all the boxes: great workmanship, fair pricing, professionalism, and integrity. I would highly recommend them to anyone looking to have insulation work done. They definitely earned my five-star review!"
12 neighbors recently requested a quote
Avatar for Attic Construction OC, Inc.
Attic Construction OC, Inc.
4.4(
85
)
Blown-In Insulation - Install or Upgrade

Serving Ontario, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"Stephan and his team were professional, on time, priced fair, protected the house well, and the removal of old/install of new attic insulation went very smooth. I requested they spread the work over 2 days in order to have electrical done in between, and they were able to accommodate that request. The electrician commented that they did a good job not disturbing existing electrical during the removal of old insulation. The result of the new insulation is a much more comfortable and efficient home. All in all, I would hire again, great job."
Before
Clean
Insulated
Attic Restoration
Attic Restoration

+17

Response time5 hrs
Response rate93%
102 neighbors recently requested a quote
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Drywall Insulation FAQs, answered by experts

Whether to repair or replace water-damaged plaster depends on the scale of the damage. For small, limited areas, you can often perform a repair yourself. If you choose to paint over small patches, ensure the surface is completely dry and apply a coat of antifungal primer first to prevent mold growth. However, simply painting or plastering over the damage is only a temporary solution that doesn't address the core problem. For more extensive or long-term damage, the plaster may be compromised, and there is a risk of mold. In these cases, it is recommended to remove the damaged section of plasterboard and replace it. You may consider hiring a professional for the repair, and it's worth noting that water damage is often covered by home insurance.

Depending on how much adhesive was used as well as the strength of the adhesive, you may have some drywall damage when removing a mirror. You can typically repair most drywall damage if it’s small by sanding the damaged area, applying spackle to smooth the damaged section so it’s flush with the rest of the wall, and repainting the area.

Deciding whether to repair or replace drywall can be tricky, but your top considerations should be the extent of the damage and what caused the damage. For instance, if you need to repair a small hole caused by a doorknob that hit the wall, you can safely patch it without a second thought. However, if you have significant drywall damage caused by water damage, it’s best to thoroughly remove the drywall to inspect and repair the pipes behind it before replacing it.

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.

In most cases, no, you won’t need a permit to replace drywall. If you’re changing the floorplan of your home by adding or removing walls during the drywall project, then you might need a permit, but replacement or repairs usually doesn’t require a permit. Your drywall professional should be able to confirm whether or not a permit is required for your project. If it is, it’s likely to add between $50 and $150 to your total cost. Keep in mind that you will need permits if you plan to install new electrical wiring or plumbing lines behind your new drywall.

The Ontario, CA homeowners’ guide to drywall insulation services

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