About Clean Crawls

Founded in 2001, we are the original crawl space cleaning company in the Washington State, and pride ourselves on our customer service and on the many benefits we offer our customers.

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Clean Crawls 10 Year Workmanship Warranty

For over 17 years, Clean Crawls has been committed to making sure that every crawl space and attic job is done right every time. Each employee at Clean Crawls stands behind the company mission statement:

Clean Crawls Mission
Our mission at Clean Crawls is to deliver superior, healthy and clean environments that provide comfort and peace of mind while creating extraordinary relationships with our clients and one another.

Certifications & Awards

Seattle Attic and Crawl Space Insulation ContractorSeattle Attic and Crawl Space Insulation Contractor
Seattle Attic and Crawl Space Insulation ContractorBest Seattle Insulation ContractorSeattle, WABest Seattle Crawl Space CompanyBest Seattle Crawl Space ReviewsCrawl Space Insulation ContractorAttic Insulation Company

Home Residential Insulation

Snohomish County PUD Registered Contractor

Clean Crawls has been a Preferred Partner with Snohomish County PUD since 2008. We have also been awarded the top producer award from SNOPUD for the last 5 years straight. Since we are a PUD Registered Trade Ally, Clean Crawls is able to qualify you on the spot and reflect that with an instant rebate on your quote.

PSE Certified Energy Efficiency Specialists

Clean Crawls has received the Energy Efficiency Leader award for Weatherization from Puget Sound Energy as well as other awards, and we are also one of their Preferred Partners. This means will be able to provide you with suggestions on how to improve your energy bill, as well as, qualify you on the spot, and reflect that with an instant rebate on your quote.

Why Choose Us

Clean Crawls leads the industry and creates the standard year after year.

We base our practices, protocol, and standards of workmanship on going above and beyond the expectations of the strictest utility companies such as PSE and PUD. Clean Crawls strives to do the job correctly the first time every time.

Building code requires using twine to install the insulation in crawl spaces. It is important not to cut corners by just tucking the insulation into the floor joists. Although you can sometimes get away with this because a 16″ on center bay width is actually 14.5″ of open space due to the thickness of the floor joists. Therefore, the insulation may (temporarily) stay up without being fastened in place. This is poor workmanship that Clean Crawls doesn’t stand for.

Others may use stay rods, which are like straightened coat hangers. These bow up when bent into the bay and help hold the insulation up, although they can easily fall if they are touched or if anything nearby is moved.

Over the years Clean Crawls has been called in to fix, “New insulation.” At first glance the insulation looks correct but upon further inspection the insulation will be the wrong size or the incorrect type of twine is used. This comes about because sellers are trying to save money or another company installed it incorrectly. At Clean Crawls we always strive to do the job correctly the first time so that you don’t need to spend money fixing our mistakes.

The best way to ensure crawl space insulation (sub-floor insulation) holds steady over time is to use the proper installation technique depending on the bay widths.

When the width equals 4 feet or greater, building code calls for wood lath to ensure the stability of the insulation. This should be common sense since there is no feasible way that twine can hold up to the weight of that much batted insulation. Utility companies that provide rebates for insulation upgrades have much more stringent criteria, often calling for wood lath when bay widths meet 32 inches and greater. To be on the high-quality and conservative side, Clean Crawls installs them for anything greater than 24 inches in span.

Wood lath is also a sturdier option overall and is a superior way to hold up the insulation under your floor. In this case, it has become common practice to buy the cheaanimal material that is at shorter lengths and then staple it together to attempt to stretch the distance of the bay. This obviously results in a weak point where stapled and results in a flimsy apparatus that is mediocre at best.

Clean Crawls again goes above and beyond by purchasing specially-cut thick lath that is also longer than what others use. The thickness of the wood lath Clean Crawls uses is typically 50% to 100% thicker than the standard wood. Although getting high-quality materials like this can cost more, Clean Crawls uses them because it is the best for the customer and is the right thing to do.

Most vapor barriers that are installed in crawl spaces are done by simply laying the plastic on the ground and then quickly forgetting about it. This can even occur in new construction buildings. This creates problems if anyone (or any thing – like a rodent) goes into the crawl and moves around. The vapor barrier quickly gets messed up and compromised as the shifting occurs and the dirt underneath is exposed. The vapor barrier then becomes useless and ceases to do its job, exposing the home to moisture, as well as gases and potentially harmful ground-swelling vapors.

To solve this problem, Clean Crawls stakes the vapor barrier down throughout the entire crawl space using thick wire stakes that resemble giant staples. They also put extra stakes near access points, since these tend to be higher traffic areas that lead to more shifting.

This practice is time-consuming, and yet Clean Crawls has developed systems to streamline the process, while their crews have the hard work ethic required to accomplish this additional service with the homeowner in mind. Again, it’s the right thing to do, and most people don’t want to go through the additional expense and added time to do it.

If your home lacks a crawl space door that fits properly, you are inadvertently inviting pests into your home. Rodents, as well as, larger animals such as opossums and raccoons can easily enter your crawl space through an improperly installed crawl space door. Animals that enter your crawl space will tear down your insulation, damage your ducting, chew on your electrical, and cause general mayhem.

Every crawl space access is different. That is why Clean Crawls custom builds solid access doors out of pressure treated wood and quarter inch steel hardware cloth. At Clean Crawls we make sure that on every job the work we perform is to industry standard or better. We want to make sure that your investment is protected because we know, the most expensive home improvement project is the one that you have to do twice. That is why Clean Crawls now includes a 10-year transferable workmanship warranty on every contracted job. Clean Crawls is the only insulation contractor in the Pacific Northwest that offers a decade of protection.

What Our Crawl Space & Attic Insulation Customers Say

Clean Crawls showed up on time. The two gentlemen were very courteous and got right to work. Phase I completed in 3 hours. They layed plastic down on my floors, bagged all the outgoing installation up and took it with them. They installed our new vapor barrier and deodorizer our crawl space. Set traps to be checked in 7-10 days to make sure there are no rodents, then the new installation will be installed. Great experience! Use them, they are Great! Thank you much!

Kristi Harrison

Tacoma, WA

My experience with clean crawls was very smooth, from getting a quote to getting the job done all within the same week. They also did all the paperwork for the utility rebate. The crew came promptly on time and worked until they we're done, kept cleaning up and removed everything after that. Their description of the space was consistent with what the home inspection revealed before I bought the house.

Marina Gerges

Seattle, WA