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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 had Lake Atitlan Insulation remove our old insulation and replace it with R-38. I enjoyed working with Nanni from the initial meeting to the final step of installing the insulation. Very knowledgeable lady and truly exceptional customer service. A highly recommended insulation contractor."
Before & After
Before & After
Before & After
Before & After
Before & After

+5

Response time9 hrs
Response rate93%
3 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

Insulating an unheated garage can still be worth it. For instance, insulating an attached garage can help with heat loss from your house in general, and it can also make it easier to store electronics in your garage without worrying about them being exposed to extreme temperatures.

If you use your detached garage as a workspace, insulation can still make a difference. Plus, you can use space heaters and a window unit AC to help condition the space while you work without installing heating.

Costs depend on insulation material, labor, accessibility, and whether existing insulation requires removal.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

The cost of installing spray foam insulation is $2,760 on average, but this cost can be as low as $650 or as high as $7,700. The main cost factor is the size of the insulated area and the type of spray foam insulation. 

Polyurethane spray foam costs between $0.44 and $1.50 per board foot, where a board foot is equal to the volume of a one-foot length of a board. More expensive options, like soybean or vegetable oil spray foam, range from $1.50 to $3.00 per board foot.

A DIY blown-in insulation project in a typical attic should take you no more than a week to complete. Experienced homeowners can blow an entire attic in one or two days.

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.