Home Insulation Services

Here in Washington State, home Insulation is essential for keeping you comfortable and cozy and is a significant factor in your energy bill. Insulation will also reduce noise and protect water pipes from freezing or condensation, which can lead to more damage and expensive repairs down the road.

Enhance Your Home Comfort and Efficiency with Professional Insulation Solutions

Insulation acts as a barrier against heat transfer, regulating indoor temperatures and reducing energy
consumption for heating and cooling. It also contributes to soundproofing, moisture control, and fire
resistance, ensuring a safe and comfortable environment for your family.

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(888) 246-5837

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Why you should install or replace your home's insulation?

Here at Northwest Crawl Space Services, we find that the most common reason is animal damage to the insulation.

Rats, mice, raccoons, and possums are common animals in our state. They like to use insulation to warm up and nest in it, causing significant damage and filling it with bacteria. This can happen in your attic, crawl space, or even inside your walls.

Air Seal for Your Home

To maximize the energy efficiency of the insulation project, gaps that leak air must be eliminated before the new insulation is installed. Northwest Crawl Space Services performs an air seal service as part of every attic or crawl space insulation project.

In this service, we look for any penetrations in the ceiling or floor where plumbing, ducting, or electrical goes through and seal them to prevent air leaks.

If you notice high energy bills, difficulty keeping your house warm or cool, rodents in crawl spaces, or believe your insulation needs to be updated, call Northwest Crawl Space Services. 

Our experts will perform a full inspection and provide an energy-efficient solution that is perfect for your home!

Our Services

For each of the services below, we choose the suitable insulation material with the right R-value to meet all local codes. We work carefully to avoid air gaps and to secure the insulation. These practices are used to maximize the efficiency of the insulation and to provide a sustainable solution.

Crawl Space Insulation

Keep your home comfortable year-round with our attic insulation services. By properly insulating your attic, we help regulate indoor temperatures, reduce energy costs, and improve overall insulation performance, ensuring a cozy living space in every season.

Attic Insulation

Keep your home comfortable year-round with our attic insulation services. By properly insulating your attic, we help regulate indoor temperatures, reduce energy costs, and improve overall insulation performance, ensuring a cozy living space in every season.

Air Duct Insulation

Maximize HVAC system efficiency and performance with our air duct insulation services. Our expert solutions minimize heat loss or gain as air travels through ductwork, maintaining consistent indoor temperatures and reducing energy waste.

Wall Insulation

Improve thermal performance and soundproofing in your home with our wall insulation services. By insulating exterior walls, we enhance energy efficiency, reduce heating and cooling costs, and create a quieter indoor environment.

Water Pipes Insulation

Protect your plumbing system and save energy with our water pipes insulation services. Prevent heat loss, reduce the risk of frozen pipes during cold weather, and lower water heating costs by insulating your hot water pipes effectively.

Unlocking Comfort and Savings: The Power of Home Insulation in the Pacific Northwest

Enhanced Energy Efficiency

Regulates indoor temperatures, reducing heating and cooling costs.

Cost Savings

Lower utility bills lead to significant long-term savings.

Improved Comfort

Consistent indoor temperatures create a cozy living space year-round.

Moisture Control and Mold Prevention

Helps seal gaps, reducing the risk of moisture-related damage.


Minimizes noise transmission, enhancing peace and quiet indoors.

Environmental Sustainability

Reduces energy consumption, contributing to a smaller carbon footprint.

Increased Property Value

Well-insulated homes are more attractive to buyers, commanding higher resale values.

Efficient Insulation Solutions: Our Proven Process

Initial assessment

Our experienced estimators will visit your home to conduct a thorough assessment of your insulation requirements and will provide you with a comprehensive quote.

  • Protecting your home: Our team takes meticulous care to safeguard your property during the installation process, ensuring that surfaces and furnishings are shielded from any potential damage.
  • Removal and disposal of old materials: we responsibly remove and dispose of any outdated or damaged insulation materials, clearing the way for the installation of new, efficient insulation.
  • Cleaning and sanitizing: Before proceeding with installation, we thoroughly clean and sanitize the area to ensure a hygienic environment for the new insulation.
  • Floor prescriptive air seal: We implement a floor prescriptive air seal to prevent air leakage and maximize energy efficiency in your home.
  • Proper insulation installation according to code: Our expert technicians make sure your insulation is installed correctly and meets safety and proffesional standards by following building codes and regulations closely.
  • Securing the insulation: We securely fasten the insulation in place, using syntactic twine or wooden lath. ensuring uniform coverage and optimal performance.
  • Final check-up: Before concluding the installation process, we conduct a comprehensive final inspection to verify that the insulation is installed to our high standards and meets your satisfaction.
  • Clean-up: Once installation is complete, we meticulously clean up the work area, leaving your home neat and tidy.

Every project is followed by a quality control visit from our estimators or owners to ensure that all standards are met and customer satisfaction is achieved.

To provide you with peace of mind, we provide comprehensive warranties on our insulation products and installation services. Our commitment to quality extends beyond the initial installation, and we stand behind our work. 


Northwest Crawl Space Services is family-owned right here in the Pacific Northwest. With years of experience, we’re licensed and bonded and always prioritize our customer’s satisfaction. Please read some of our 5-star reviews from our happy customers.

Myong Soo Kim
Myong Soo Kim
9 March 2023
Exceed their promises..excellent communication and great crew. Highly recommend.
Thomas Roberts
Thomas Roberts
9 March 2023
Rob and crew from NW Crawl Space did full remediation for our crawl space and attic, after finding evidence of rodents (mice) in both areas. Removed old crawl space insulation & vapor barrier, replaced heat-ducts that were damaged, & vacuumed out attic insulation and debris. Sealed openings in both areas to prevent rodents from returning. Traps set, with rodent control plan. Highly recommended!
Emily Davis
Emily Davis
3 March 2023
Northwest Crawl Space Services has been honest, professional, easy to work with, and has done excellent work on my home. I first approached the company looking for someone to reinsulate and clean out my mud room crawlspace-- it is an addition to the house and is open-air. Lior came by and noted that because NWCSS specializes in fiberglass insulation, they wouldn't be able to work on this part of my house, because it would require spray foam insulation to truly be rat and weather proofed. I really appreciated this up front honesty-- two previous contractors had given me bids to reinsulate with fiberglass, never mentioning the need for spray foam, and never saying that they wouldn't be able to do a proper job. I would have paid money to some other company for a shoddy, inappropriate "solution" if Lior had not filled me in. Lior even recommended some other companies to call that specialize in spray foam! After this helpful and informative experience, I knew right away when I discovered signs of rats in my main basement crawlspace that I wanted NWCSS to be the ones to work on the problem. Lior came by to check it out and did a very thorough inspection. His manner with clients is excellent-- I never felt like my questions were being dismissed. We set a date for a crew to come by to replace rat-infested insulation, remove the improperly installed vapor barrier, clean out debris, and reinstall vapor barrier to industry standards. The crew, Patrick and Chandler, were friendly, polite, and happy to answer questions. Savannah in the office has also been very friendly and quick to answer my questions regarding logistics and payment. Overall, my experience was excellent and I will re-hire NWCSS when it comes time to reinsulate and clean out my attic crawlspace.
jan ostrovsky
jan ostrovsky
6 February 2023
Matan gave us a fair estimate for the crawl space re-insulation and screening, and the work was done promptly. I was pleasantly surprised when the final bill came in about 15% UNDER the estimate. It’s nice to deal with a company which has the integrity to pass those savings on.
Dan Huang
Dan Huang
26 January 2023
Northwest Crawl Space is a trustful company to work with. They helped me install the French drain, replace the insulation and vapor barrier. Matan and his stuff did a great job. They will carefully protect your home when performing the job, clean the waste after the work is done, and come back to inspect if the work is good.
Scott Taylor
Scott Taylor
17 December 2022
We had Northwest crawlspace come out to inspect our crawlspace and they identify a lot of standing water as well as rodent activity in the insulation. As a result, we needed a full clean out of our crawlspace and new insulation, vapor barrier, drain and sump pump. The crew was professional, friendly and fast. The work was extremely well done, we recently had them come out to check everything and the technician confirmed it was one of the best installs he had seen. I would highly recommend this company to anyone.
Ricardo Salvatierra
Ricardo Salvatierra
16 December 2022
My experience with this company has been amazing. Lior (the owner) goes above and beyon every single aspect, super professional and always providing the best advice to avoid unnecessary expenses. They did the whole work in my crawlspace, sump pump, french drain, vapor barrier, etc... and results are great, 0 moisture. I would definitely recommend it.
Torrey Olsen
Torrey Olsen
15 December 2022
Lior and his NW Crawl Space Services team were everything we expected in professionals! They were on time, neat, though, communicative, polite, did the job as promised and then checked back with us as promised again to ensure that the job was done!
Wayne Appler
Wayne Appler
18 November 2022
I had Northwest Crawl Space Services remove all my rodent infested insulation and vapor barrier. They cleaned & disinfected my crawl and installed all new insulation and a sealed vapor barrier. The workers were very diligent and and skilled in their methods. I was given a quote up front and feel that I received a quality job that was worth every penny. I am beyond pleased with the company and would highly recommend them to everyone.

Frequently asked questions

What does R-value mean in insulation?

The R-value measures the thermal resistance of insulation material. It indicates how effectively the insulation resists heat flow, with higher R-values signifying better insulation performance and greater resistance to heat transfer.

No, in cases of older homes that were built under old codes, some of the structures may not allow enough depth to accommodate the thickness of insulation required according to today’s standard codes.

Insulation services can increase the resale value of your home by making it more energy-efficient, comfortable, and attractive to potential buyers. Well-insulated homes typically command higher resale values due to lower utility costs and improved overall comfort and livability.

We offer a variety of insulation materials, including fiberglass, cellulose, mineral wool, and foam sleeves insulation. Our selection is based on factors such as energy efficiency, durability, environmental impact, budget and specific requirements of your home. We assess your insulation needs and recommend the most suitable material accordingly.

Signs that your home may need insulation services include uneven indoor temperatures, high energy bills, drafts, moisture issues, and excessive noise transfer. Our team can conduct a thorough assessment of your home to determine its insulation needs and recommend appropriate solutions to improve energy efficiency and comfort.

Blow-in insulation and batt insulation are two common types of insulation used in buildings, each with its own set of advantages and applications.

Blow-in insulation, also known as loose-fill insulation, consists of small particles of fiber, foam, or other materials. It is applied using a blowing machine, making it ideal for insulating areas with irregular shapes or hard-to-reach spaces such as attics or walls with obstructions. This method provides better coverage in difficult-to-access areas and can be more effective at reducing air leakage.

On the other hand, batt insulation is composed of pre-cut panels or rolls made from materials like fiberglass or rock wool. These panels are installed by fitting them between studs, joists, or rafters. Batt insulation is more straightforward to install and is commonly used in standard wall cavities and attics with ample space.

Ultimately, the choice between blow-in and batt insulation depends on factors such as the specific requirements of the project, the structure of the building, and budget considerations. Both types of insulation have their advantages and are suitable for different applications.

Get Your Free Quote

Fill out this form and we will contact you within 24 hours.