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TRUSTED BY CORNELIUS, OR HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon233
    Verified insulation services reviews

Find Insulation pros in Cornelius

Avatar for Northwest Weatherization
Northwest Weatherization
4.8(
154
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"We re-sided our 1929 house recently, and during the tear-off phase it was the perfect time to have blown-in insulation performed to insulate our exterior walls. Ryan and his crew worked quickly and we are so much more comfortable with our walls finally insulated. We had a minor repair needed as a result of the drilling, and the company worked quickly to resolve it to our satisfaction. I will happily recommend them to others, and feel like this project pays for itself quickly in terms of energy efficiency and comfort."
Attic Blow
Our tech went out to check the progress of the job, customer service is our priority.
Crawlspace
Wall drill & blow
Attic Blow

+12

13 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Ulises Pro Insulation, LLC
Ulises Pro Insulation, LLC
4.6(
80
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Cornelius, OR and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"Ulises was able to get in quickly and get the job completed insulating my shop ceiling trusses with batt insulation. I would have preferred white FSK instead of clear plastic but it would have put me way over budget Overall they did a good job"
Batts & Polar-Blanket in Bonus Room
Batts & Polar-Blanket in Bonus Room
Polar-Blanket
Polar-Blanket
Air Seal Package

+9

Response time9 hrs
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Westside Drywall, Inc.
Westside Drywall, Inc.
4.1(
121
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"Did a great job of installing insulation and drywall however, they cracked a wall when installing the drywall, they hammered rather than screw it into the studs. Now I must repair the cracked wall. Somehow my compact florescent light also disappeared from the laundry room . They also initially wanted to put the R-30 insulation on top of the R-11 that was already in the ceiling. When compressed the insulation would have lost some of its insulating capabilities so I had to tell them not to do that. Seems they should have known this."
Before Restoration
Blow In Blanket System
During Wall Injection
Before Restoration
Complex Window Design

+18

12 neighbors recently requested a quote
Recommended by97%of homeowners
Sierra NW Insulation, LLC
5.0(
4
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Cornelius, OR and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: True professional

Residential retro and new construction Insulation installment in attic, walls, and crawl. We install or upgrade blown-in, batt, rolled, and reflective insulation. We are an affordable family owned business that has 20+ years working for big companies in our area.

1 neighbors recently requested a quote
Recommended by100%of homeowners
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Insulation questions, answered by experts

Spray foam insulation can last between 80 and 100 years, depending on the type. Closed-cell spray foam is more durable, while open-cell foam is more susceptible to moisture damage and deterioration. It's important to consult a professional installer to understand which type of foam will be used and its specific longevity. Additionally, be aware that some spray foams can damage plastic piping, so if you have PVC or CPVC pipes, discuss this with your installer.

The lifespan of cellulose insulation is 20 to 30 years, on average. That said, it’s important to start checking your insulation after year 10 to check for degradation, mold, mildew, and other potential problems. Every 10 years, you should also confirm your home’s insulation is in line with updated local building codes.

Yes, you need a 1.5-inch to 2-inch air gap in a cathedral ceiling to allow proper air flow and prevent cathedral ceiling venting problems. This amount of airspace allows warm, moist air to properly leave your ceiling to avoid moisture build-up and other issues that put your home at risk. You can also add an air vent for extra air flow.

The most affordable way to insulate behind unfinished walls is to install fiberglass batts or rolls. These total around $0.75 per linear foot, with the width matching the gaps between standard studs perfectly. However, it’s important to consider the R-value of your insulation and the climate in your area, as fiberglass insulation isn’t the best in terms of preventing heat transfer. Plus, the most affordable option may cost more on electricity bills over time. The most affordable way to insulate behind finished walls is to leave them up and use blown-in insulation to avoid drywall replacement.

Spray foam insulation doesn’t do well around heat sources. Therefore, You can use spray foam insulation to seal around HVAC boots that penetrate through the drywalls or around where wrapped ducts connect to the boots, but we don’t recommend using spray foam insulation to encapsulate your air ducts. Spray foam insulation on air ducts is also less effective compared to duct wraps.

The Cornelius, OR homeowners’ guide to insulation services

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