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TRUSTED BY WESTPORT, WA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon14
    Verified insulation services reviews

Top-Rated Insulation pros in Westport - Updated Nov 2026

Avatar for Lake Atitlan Insulation LLC
Lake Atitlan Insulation LLC
5.0(
20
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Westport, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"We were considering upgrading our insulation but weren't sure if it was worth the investment. After consulting with Lake Atitlan Insulation, they convinced me it was the right choice. The insulation they installed not only made our home more comfortable but has already saved us money on energy costs."
Before & After
Before & After
Before & After
Before & After
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+5

Response time9 hrs
Response rate93%
3 neighbors recently requested a quote
Pacific Spray Systems LLC
5.0(
6
)
Spray Foam Insulation - Install

Serving Westport, WA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer spray foam insulation services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Response time2 days
Recommended by100%of homeowners
Avatar for WASHINGTON RETROFOAM LLC
WASHINGTON RETROFOAM LLC
4.8(
6
)
Injection Insulation - Install

Serving Westport, WA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

We have over 27 years of experience and over 100k homes insulated. RetroFoam is a non-toxic, odor-free, tripolymer-based resin that acts as both an insulator with a high R-Value and an air seal. This injection foam doesn't off-gas, is Class One Fire Rated, and safe to have in your home. It is an excellent choice for existing exterior walls and can be installed from outside the home. \n\nCascade RetroFoam understands that your home is your biggest investment and you don't want to waste time and money dealing with an uncomfortable home and high energy bills. We offer PREMIER service to the following neighborhoods: * Shoreline, Bellevue, Magnolia, Ballard, Queen Anne, West Seattle, Capitol Hill, Wallingford, University District, Magnolia, Seward Park, Fauntleroy, Laurelhurst, Bothell, North Bend, Snoqualmie, Renton, Kent, Des Moines.

My jobs
My jobs
My jobs
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My jobs

+22

Response time2 days
Response rate100%
14 neighbors recently requested a quote
Avatar for Aire Serv
Aire Serv
3.8(
24
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Westport, WA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"My 20 year old furnace died on a cold Thursday evening and I got online to find a company to replace it. After entering my contact info, I immediately received a text message from the company's owner, Casey, making himself available for me if I wanted to talk by phone. I had him call me, and he checked in to see what the problem was, what I wanted to do, and to be sure I had heat for the evening. He even offered to drive space heaters to my home if needed, even though he was at least 45 minutes away. He then scheduled to meet with me at my convenience the next day to look at my home and discuss options. During the meeting, Casey was very personable, knowledgeable,and professional about the products and services his company offered and helped me design a heating/air conditioning system to replace my old, inefficient furnace and wall a/c and insulate existing ducts. He also referred me to my utility company to see if rebates were available, which there were. The workers who installed the products were pleasant, professional, and skilled and ensured that their work met the city's requirements so that I was eligible for the rebate. I am very happy with the products and services I received from them and would recommend them to anyone having problems with their heating/air conditioning units or looking to upgrade to more efficient systems. 
"
Recommended by84%of homeowners
Avatar for Pro Cover Roofing Inc
Pro Cover Roofing Inc
4.0(
18
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Westport, WA and surrounding areas

Free estimates

Credit card accepted

"Good quality work, completed in a timely fashion and a fair price. Their cleanup was also thorough and they even stacked old cedar shakes for our later use. I really can’t think of what more we could ask. There was a mixup with our neighbors’ roof, but Pro Cover even dealt with that professionally."
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+39

Recommended by87%of homeowners
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Insulation FAQs, answered by experts

Whether you should remove old insulation before blowing in new insulation depends on your particular situation. Fiberglass insulation attracts insects and mold over time, so if it has been decades since your last insulation upgrade, consider removing the old materials before placing the new ones. However, most types resist mold, insects, and mildew, so once you get the go-ahead from your contractor that your space is free from all three, feel free to install the new insulation directly on top of the pre-existing materials.

Insulating your ducts offers several benefits, including:

  • Improved energy efficiency: Duct insulation prevents energy losses, reducing heating and cooling costs.

  • Cost savings: Lower energy bills make insulation a cost-effective investment.

  • Environmental benefits: Enhanced efficiency reduces your carbon footprint.

  • Consistent comfort: Insulated ducts help maintain a stable indoor temperature.

  • Better indoor air quality: Reduced allergens and pollutants improve air quality.

The primary purpose of insulation is to maintain comfortable temperatures in a home, whether that’s cool air when it’s hot out, or warm air in winter, but that’s not all it can do. All options will also minimize heating and cooling needs, lowering both your carbon footprint and energy bills in turn. And some options, like rigid foam boards, even offer soundproofing benefits, too.

Yes, PEX pipes should be insulated in certain situations. While insulation is not always necessary for pipes running through insulated interior or external walls, it is recommended for any pipes located in uninsulated rooms, unheated areas, or outside, especially in regions with cold winters. The primary reason is to prevent freezing. Although PEX is more resistant to cracking from freezing than other materials, repeated freezing and thawing can weaken the pipes over time, increasing the risk of a burst.

Yes, you can install insulation behind drywall yourself, but only if your walls are not finished. If your studs are exposed, installing fiberglass insulation in roll or batt form is very straightforward and just requires a few tools and some safety equipment. If your walls are already finished and you’re looking to add insulation, it’s better to hire a professional, as you’ll likely need blown-in insulation, which can be dangerous to work with and a challenge to get into the proper areas in your wall voids.

The Westport, WA homeowners’ guide to insulation services

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