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TRUSTED BY LAKE OSWEGO, OR HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon307
    Verified insulation services reviews

Top-Rated Insulation pros in Lake Oswego - Updated Nov 2026

Avatar for Northwest Weatherization
Northwest Weatherization
4.7(
97
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Lake Oswego, OR and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"Had vapor barrier replaced, insulation put in floor/attic, and duct work sealed/insulated. Ryan came out to bid and did a great job explaining everything and answering all our questions. The crews were all professional, polite, & respectful. Showed up on time every morning and went over the days work scheduled. Plastic off all work areas & cleaned up everyday on the job. No sign they were their that day. The quality of the work was excellent. Very impressed from start to finish."
Example of a Properly Insulated Attic
Difference between insulated and non-insulated
The attic before insulation
A Properly Insulated Attic
Floor Insulation

+22

Response time1 day
32 neighbors recently requested a quote
Recommended by96%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 Lake Oswego, 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
4 neighbors recently requested a quote
Recommended by90%of homeowners
Timberland Insulation, LLC
4.4(
35
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Lake Oswego, OR and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Juan of Timberland Insulation did an outstanding job. We had critters get into our crawl space where they ran amok all through our insulation. The old insulation had to be removed and new insulation installed. The crew at Timberland out performed my expectations. I would highly recommend them."
Response time2 days
2 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Westside Drywall, Inc.
Westside Drywall, Inc.
4.1(
121
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving Lake Oswego, OR and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"Westside Drywall was the only firm willing to do what I requested, which was to repair and not replace under-floor insulation. As a result, their price was much lower. An added bonus was that they could schedule the job in a few days instead of a few weeks or months."
Before Restoration
Blow In Blanket System
During Wall Injection
Before Restoration
Complex Window Design

+18

10 neighbors recently requested a quote
Recommended by97%of homeowners
Sierra NW Insulation, LLC
5.0(
5
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Lake Oswego, OR and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: True professional

"They did a very thorough crawl space clean up and detailed and well secured installation of the vapor barrier . They were honest, and efficient with positive energy. The issues are with communications from the office. They could be more professional, timely and thorough."
5 neighbors recently requested a quote
Recommended by80%of homeowners
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Insulation FAQs, answered by experts

Yes, energy-efficient homes are increasingly desirable in the market.

Monolithic slabs don’t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.

DIY installation is not recommended, as professionals ensure even distribution, proper sealing, and compliance with building codes.

There are two reasons why cellulose insulation repels rodents (and insects). First, the insulation has been treated with boric acid, which is a natural pest-repellent. In addition, the loose-fill style of cellulose creates less-than-ideal conditions for mice and other rodents to nest and burrow, helping to keep them at bay.

The cost to install or upgrade insulation generally ranges from $1.50 to $4.00 per square foot. The final price depends on factors such as the type of insulation chosen, the total area to be covered (home size), and local labor costs.

The Lake Oswego, OR homeowners’ guide to insulation services

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