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Foundation, basement or crawlspace waterproofing / encapsulation pros in Arlington

Avatar for Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
20508 Cypress Way
4.95(
141
)
Approved Pro
Insulation Co., LLC - Removal & Clean Outs
20508 Cypress Way
4.95(
141
)
Approved Pro
Super Service Award
Customers say: True professional
16 years of experience
Free onsite estimate

Insulation Co. LLC - your premier insulation partner since 2008, is right in the heart of Seattle and extends our services throughout Western Washington. As the regions trusted attic and crawl space specialists, we bring a wealth of experience and expertise to every project. We specialize in creating pristine, energy-efficient spaces and offer comprehensive attic and crawl space services. Our expert insulation removal and replacement services, along with thorough cleaning, ensure your home is always in top shape. We are skilled in removing and remediating molds and enhancing air quality with professional duct insulation and sealing. Our skilled team also provides rodent proofing ensuring your home remains a sanctuary free of unwanted guests. We upgrade your home's defenses with our robust crawl space doors, vapor barriers, and air-sealing techniques. For moisture issues, we offer sump pump and French drain solutions. For manufactured homes, we provide specialized crawl space services.

"Had a wonderful experience with Insulation Co LLC! would recommend for mold remediation and insulation work! JO the owner was very easy to work with and gave me many options!"

Julie E on May 2025

Insulation Co. LLC - your premier insulation partner since 2008, is right in the heart of Seattle and extends our services throughout Western Washington. As the regions trusted attic and crawl space specialists, we bring a wealth of experience and expertise to every project. We specialize in creating pristine, energy-efficient spaces and offer comprehensive attic and crawl space services. Our expert insulation removal and replacement services, along with thorough cleaning, ensure your home is always in top shape. We are skilled in removing and remediating molds and enhancing air quality with professional duct insulation and sealing. Our skilled team also provides rodent proofing ensuring your home remains a sanctuary free of unwanted guests. We upgrade your home's defenses with our robust crawl space doors, vapor barriers, and air-sealing techniques. For moisture issues, we offer sump pump and French drain solutions. For manufactured homes, we provide specialized crawl space services.

"Had a wonderful experience with Insulation Co LLC! would recommend for mold remediation and insulation work! JO the owner was very easy to work with and gave me many options!"

Julie E on May 2025


Avatar for Attic Doctor LLC
Attic Doctor LLC
10333 NE 1st St #154
5.00(
14
)
Approved Pro
Attic Doctor LLC
10333 NE 1st St #154
5.00(
14
)
Approved Pro
Super Service Award
Customers say: Quick response
72 local quotes requested
2 years of experience

Welcome to your one-stop shop for insulation, rodents and mold! Attic Doctor is a local, licensed contractor providing eco-friendly solutions to all of your attic and crawl space problems. Scratching sounds coming from the attic, when you’re trying to sleep? Mold destroying your roof and air quality? Losing your mind over heating and cooling costs? Call the Attic Doctor!

"Great job done"

Kyle R on January 2025

Welcome to your one-stop shop for insulation, rodents and mold! Attic Doctor is a local, licensed contractor providing eco-friendly solutions to all of your attic and crawl space problems. Scratching sounds coming from the attic, when you’re trying to sleep? Mold destroying your roof and air quality? Losing your mind over heating and cooling costs? Call the Attic Doctor!

"Great job done"

Kyle R on January 2025


Avatar for Groundworks
Groundworks
18931 59th Ave NE Ste 5
4.65(
13
)
Approved Pro
Groundworks
18931 59th Ave NE Ste 5
4.65(
13
)
Approved Pro
Customers say: True professional
49 local quotes requested
19 years of experience

Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"Tyler, Danny, & Juan were friendly, professional, and very efficient. They cleared out all the old insulation and rodent leavings under our house Friday in 4-5 hours. Monday they installed insulation, thick white plastic and sealed up the crawl space with a de humidifier and were done by 3:30pm"

David L on May 2025

Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"Tyler, Danny, & Juan were friendly, professional, and very efficient. They cleared out all the old insulation and rodent leavings under our house Friday in 4-5 hours. Monday they installed insulation, thick white plastic and sealed up the crawl space with a de humidifier and were done by 3:30pm"

David L on May 2025


Avatar for John's Waterproofing Co.
John's Waterproofing Co.
219 Airport Road
4.86(
51
)
Approved Pro
John's Waterproofing Co.
219 Airport Road
4.86(
51
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
41 local quotes requested

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."

Matt H on October 2022

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."

Matt H on October 2022


Avatar for Skagit Concrete Polishing and Coating, LLC
Skagit Concrete Polishing and Coating, LLC
320 S 29th Place
5.00(
3
)
Approved Pro
Skagit Concrete Polishing and Coating, LLC
320 S 29th Place
5.00(
3
)
Approved Pro
Customers say: Quick response
11 local quotes requested
4 years of experience

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"What a wonderful experience - and result! Skagit Concrete transformed my garage with a beautiful epoxy floor done efficiently, and with superb workmanship. It was easy to discuss the project and complete it (even though I was traveling). I got a video report each morning and eve, so I knew what was going to happen that day - and the result. I love people who do good work, meet the schedule and leave everything clean and beautiful. Highly recommend!"

Janet P on March 2025

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"What a wonderful experience - and result! Skagit Concrete transformed my garage with a beautiful epoxy floor done efficiently, and with superb workmanship. It was easy to discuss the project and complete it (even though I was traveling). I got a video report each morning and eve, so I knew what was going to happen that day - and the result. I love people who do good work, meet the schedule and leave everything clean and beautiful. Highly recommend!"

Janet P on March 2025


Avatar for Envirosmart Solution Inc
Envirosmart Solution Inc
330 SW 43rd Street Suite K267
5.00(
1
)
Approved Pro
Envirosmart Solution Inc
330 SW 43rd Street Suite K267
5.00(
1
)
Approved Pro
14 local quotes requested
21 years of experience

We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.

We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.


Avatar for Honeycomb Construction
Honeycomb Construction
618 146th Avenue NE, #64
4.81(
37
)
Approved Pro
Honeycomb Construction
618 146th Avenue NE, #64
4.81(
37
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
241 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Very professional and efficient. We had a great experience!"

Samantha S on March 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Very professional and efficient. We had a great experience!"

Samantha S on March 2024


Avatar for Iconiq Construction, LLC
Iconiq Construction, LLC
1601 5th Avenue, Unit 9
5.00(
8
)
Approved Pro
Iconiq Construction, LLC
1601 5th Avenue, Unit 9
5.00(
8
)
Approved Pro
Customers say: Quick response
10 local quotes requested
2 years of experience

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 a variety of General Contractor 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!

"This company is built internally the right way. Extremely professional and everything is in house. I repeat...IN HOUSE. If you have ever dealt with a remodeling company that employs outsourced labor, it can be a mis-quote nightmare. Other companies pointed me to handy men for this job not realizing I might need or want more than that in the future. Thank you "

Ryatt O on January 2025

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 a variety of General Contractor 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!

"This company is built internally the right way. Extremely professional and everything is in house. I repeat...IN HOUSE. If you have ever dealt with a remodeling company that employs outsourced labor, it can be a mis-quote nightmare. Other companies pointed me to handy men for this job not realizing I might need or want more than that in the future. Thank you "

Ryatt O on January 2025


BSC Construction
5.00(
8
)
Approved Pro
BSC Construction
5.00(
8
)
Approved Pro
Super Service Award
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 local quotes requested

Welcome to BSC Construction, a home repair contractor. We specialize in handyman home repairs, excavation and drainage construction. Our services include: - Drainage construction - Retaining walls - Handyman services - Home repairs - Excavation and grading Contact us today!

"We have been so pleased with BSCs work! The attention to detail was high and they are super responsive when any issues arise. I would recommend them to anyone who wants the job done right and loves a stress free environment!"

Anne C on July 2024

Welcome to BSC Construction, a home repair contractor. We specialize in handyman home repairs, excavation and drainage construction. Our services include: - Drainage construction - Retaining walls - Handyman services - Home repairs - Excavation and grading Contact us today!

"We have been so pleased with BSCs work! The attention to detail was high and they are super responsive when any issues arise. I would recommend them to anyone who wants the job done right and loves a stress free environment!"

Anne C on July 2024


Avatar for Groundworks
Groundworks
18915 16th Ave S
4.44(
162
)
Approved Pro
Groundworks
18915 16th Ave S
4.44(
162
)
Approved Pro
Customers say: Super punctual
425 local quotes requested
28 years of experience

Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!

"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"

Charles W on May 2025

Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!

"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"

Charles W on May 2025

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Foundation, basement or crawlspace waterproofing / encapsulations FAQs

Cleaning your crawl space is a worthwhile investment for several important reasons. A properly maintained crawl space prevents structural damage by eliminating moisture that can deteriorate wood supports and metal components. It also significantly improves your home's indoor air quality by removing allergens like mold spores and pest droppings that can circulate through your living spaces. 

Additionally, a clean crawl space contributes to better energy efficiency by allowing proper insulation installation and reducing humidity levels that force your HVAC system to work harder.

Several warning signs indicate your crawl space needs professional attention. Look for musty odors throughout your home, unexplained increases in allergy symptoms, higher energy bills, visible pest activity, or moisture issues. 

Other indicators include sagging floors, warped wood, visible mold growth, standing water, or damaged insulation. If your crawl space hasn't been inspected in over a year, or if you've recently experienced flooding or severe weather, it's advisable to have professionals assess the space even without obvious symptoms.

Most crawl space cleaning projects take between one and three days to complete, depending on several factors. Simple debris removal in a small, relatively clean space might be finished in a single day. 

More involved projects that include mold remediation, water damage repair, or pest control require two to three days. For large crawl spaces or those with extensive contamination, the timeline might extend to a week, particularly if additional services like encapsulation are included in the project scope.

You can remain in your home during basic crawl space cleaning. However, if the project involves mold remediation or pest extermination with chemical treatments, temporary relocation might be recommended, especially for household members with respiratory conditions or chemical sensitivities. 

Professional cleaning companies use containment procedures to minimize the spread of dust and contaminants into living spaces, but some disruption is inevitable. Discuss your specific situation with your service provider to determine the best approach for your family's needs.

The homeowners guide to foundation, basement or crawlspace waterproofing / encapsulations
From average costs to expert advice, get all the answers you need to get your job done.
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