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TRUSTED BY PORT TOWNSEND, WA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon80
    Verified insulation services reviews

Top-Rated Insulation pros in Port Townsend - Updated Nov 2026

Avatar for SPF Insulation
SPF Insulation
4.8(
49
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Port Townsend, WA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"The staff was friendly and professional. They demonstrated a desire to get to work asap which made the selection easy. Also got a spray foam insulation bid for crawl space and we will go with SPF for this large expense. Spay foam crawl supports our heated floors so that more heat will heat people opposed to rats in the crawl..."
Drill & Fill
Drill & fill
Drill & Fill
Drill & Fill
Drill & Fill Method

+1

Response time3 days
4 neighbors recently requested a quote
Recommended by84%of homeowners
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 Port Townsend, 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
Before & After

+5

Response time9 hrs
Response rate93%
3 neighbors recently requested a quote
Avatar for EvergreenPro Insulation LLC
EvergreenPro Insulation LLC
5.0(
19
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Port Townsend, WA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I was given several recommendations from Angi list, the most professional one of the 4 contacts I received was from David of EVERGREENPRO INSULATION. I needed to have a couple of interior walls insulated for soundproofing done. David was responsive, answered all my questions and gave me a reasonable quote. The other companies I talked to quotes were inline with Davids but the customer service just wasn't there like Davids. I even had one company tell me my project was too small for them to do..... Really? The next insulation project I need done I will just call David from EVERGREENPRO INSULATION and give them the job. A great job done by David and Jamie and would recommend and use them again."
Before clean out
After clean out
After installation
After installation
Access door frame

+4

Response time1 day
Response rate97%
31 neighbors recently requested a quote
Avatar for Square 1 Venture Group, LLC
Square 1 Venture Group, LLC
5.0(
72
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Port Townsend, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"They removed old hot/cold water pipe insulation that was in poor shape, and installed high quality rubber pipe insulation. Removed old support uprights that where of poor quality, and not installed correctly. Installed new high quality uprights, and attached them to the support beams. Jon and his team at Square 1 Venture Group far exceeded my expectations. From first contact till the end of the project their communication and workmanship was first rate. They gave daily updates with the progression of the work which also included pictures. They were always reliable arriving on time, and put in a full days work. Very honest to deal with showing receipts for the materials that where purchased, and also came in under the bid price. When the jobs where completed they left the worksite in excellent condition. They do high quality work for a reasonable price and do it right the first time. I would definitely hire them again."
Exterior
Port Ludlow
Encapsulation
Bad Crawl Space
Progress

+1

Response time4 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Pacific Spray Systems LLC
5.0(
6
)
Spray Foam Insulation - Install

Serving Port Townsend, 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
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for WASHINGTON RETROFOAM LLC
WASHINGTON RETROFOAM LLC
4.8(
6
)
Injection Insulation - Install

Serving Port Townsend, 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
My jobs
My jobs

+22

Response time2 days
Response rate100%
15 neighbors recently requested a quote
Avatar for BUILDING PERFORMANCE PROS LLC
BUILDING PERFORMANCE PROS LLC
4.5(
8
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Port Townsend, WA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"The workers were on time. Very efficient. They did a blower door test and found the air leaks and insulated these areas. Blew installation above the garage, cleaned out the crawl space and put new installation there and basement. Found a water leak from my toilet,Thank goodness. Covered everything in the basement and swept and cleaned up after. I would recommend them!"
Response time2 days
8 neighbors recently requested a quote
Showing 1-10 of 37
Insulation FAQs, answered by experts

Yes. Bathroom insulation requires a vapor barrier. As a matter of fact, bathrooms and kitchens are the two areas of the home that should always get a vapor barrier because of the excess moisture. If you don’t have a vapor barrier in place in these rooms, the moisture will build up and eventually lead to mold and bacteria, not to mention the destruction of the insulation.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

Although the cost might seem high, winterizing your home is important for your health and the structural integrity of your home. Winterizing will keep your home warm and toasty during the cold months and prolong the life of your appliances, windows, pipes, sprinkler system, pool, and more. 

An insulated garage benefits from roof vents to ensure proper ventilation and prevent moisture buildup. Insulation can trap moisture in the garage, especially during temperature fluctuations, and roof vents play a crucial role in expelling the moisture in the air. Including roof vents promotes air circulation, preventing condensation and enhancing overall air quality.

The Port Townsend, WA homeowners’ guide to insulation services

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