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Top-Rated Spray foam insulation pros in Cascadia - Updated Nov 2026

Avatar for HomeRx
HomeRx
4.2(
97
)

Serving Cascadia, OR and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Steve looked at project and wanted to be certain that attic was properly vented before he installed insulation. His recommendations were professional and helpful. We are following up."
Masking Off Rooms
Lead-safe Practices
Lead-safe Practices
Masking
Masking

+8

Response time8 hrs
Response rate85%
16 neighbors recently requested a quote
Sierra NW Insulation, LLC
5.0(
5
)

Serving Cascadia, 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."
6 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Glynn Construction LLC
Glynn Construction LLC
5.0(
4
)

Serving Cascadia, OR and surrounding areas

Approved

Free estimates

Emergency services offered

Credit card accepted

"My project was finishing out a former shower stall into a future storage space. This entailed mud and tape to the sheetrock to a “ready to paint” status and lay new engineered tile flooring over the subfloor. Prior to hiring Torin, he was shown the space and what was needed in order to provide an estimate. The estimate met my needs and budget. He was always a couple minutes early, was genuinely friendly and professional. Each day he started by insuring his work area protected non-workareas from spills or other damage. His work was top-notch, and since the work took several days he made sure he always left with his areas cleaner than before. If I could give him 6 stars, I would. We are already in discussion about finishing this new space into a shelved storage area for the bathroom."
18 neighbors recently requested a quote
Avatar for GARRISI INSULATION AND WATER MITIGATION LLC
GARRISI INSULATION AND WATER MITIGATION LLC
5.0(
1
)

Serving Cascadia, OR and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

GARRISI INSULATION AND WATER MITIGATION LLC proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

New construction
New construction
New construction
New construction
New construction

+5

7 neighbors recently requested a quote
Avatar for Josh Lowe's Dr. Energy Saver
Josh Lowe's Dr. Energy Saver
4.5(
27
)

Serving Cascadia, OR and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"My new-to-me home built in 1947 was 95 degrees in the walk-up attic in the summer! It made downstairs hot, too. I just couldn't stand it any more. If you put your hand on the ceiling, it was amazingly hot. A friend suggested just nailing some foam boards onto the underside of the roof, but I thought there has to be a better solution. I did research, saw the blown-in insulation, and had Josh Lowe out to give me a proposal. It ended up spray foam was the better solution. Since his company installs spray foam AND blown-in cellulose, I thought he was truly telling me the better solution, rather than just selling me on one thing. Glad I chose them for spray foam, and my home is easier to live in now!"
Bill Drummond, General Mgr. and Energy Consultant
AJ DeLaRosa
Eric Gibson, Energy Consultant
Lee Tracy, Energy Consultant
Sean Copas, Energy Consultant

+15

Recommended by89%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Insulation - Install or Upgrade

Serving Cascadia, OR and surrounding areas

In business since 1971

Credit card accepted

"Well, the first time the replacement was ordered it was the wrong one, which of course, delayed the installation a week. When it was finally installed I had to pay an additional $850 for code upgrades. This I was not informed of by Home Shield. Then we noticed that there was water on the garage floor and found that the pipe coming in from the wall was leaking at the wall so had to call the plumbing company back out to fix it. They first tried to say it was not their fault but since there wasn't a leak before they installed they did fix it. I have used Home Shield a few times before and never had a problem. Some of the companies they use are not the best so you have to research them before you commit. I have found HS service to be good if you do your homework. At the end of the day I was without hot water for almost 3 weeks but it was do to the plumbing company they sent out."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
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FAQs for spray foam insulation projects in Cascadia, OR

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.