Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Issaquah, WA

There are 17 highly-rated local basement waterproofing pros.

Need a pro for your basement waterproofing project in Issaquah, WA?

Select your specific project to find the pro for you.

TRUSTED BY ISSAQUAH, WA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon83
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Issaquah

Avatar for Insulation Co., LLC - Removal & Clean Outs

Insulation Co., LLC - Removal & Clean Outs

4.96(
171
)
Approved Pro

Insulation Co., LLC - Removal & Clean Outs

4.96(
171
)
Approved Pro
Super Service Award
Customers say: True professional
2009 years of experience
Free onsite estimate

Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.

"Very easy to work with. Crews were efficient, conscientious and polite. They took photos of their work and took the time to explain what they were doing. Overall I was very pleased with the customer service and result."

Eric D on November 2025

Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.

"Very easy to work with. Crews were efficient, conscientious and polite. They took photos of their work and took the time to explain what they were doing. Overall I was very pleased with the customer service and result."

Eric D on November 2025


Avatar for Rain Pros Inc

Rain Pros Inc

4.87(
389
)
Approved Pro

Rain Pros Inc

4.87(
389
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2006 years of experience

Rain Pros is Puget Sounds premier full-service sprinkler and drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage and irrigation installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new sprinkler or drainage system please email our general manager ([email protected]). For drainge repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- [email protected] to immediately cue for with our service department.

"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."

Joan G on September 2025

Rain Pros is Puget Sounds premier full-service sprinkler and drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage and irrigation installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new sprinkler or drainage system please email our general manager ([email protected]). For drainge repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- [email protected] to immediately cue for with our service department.

"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."

Joan G on September 2025


Avatar for Wu Construction

Wu Construction

4.76(
186
)
Approved Pro

Wu Construction

4.76(
186
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1983 years of experience

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025


Avatar for Iconiq Construction, LLC

Iconiq Construction, LLC

5.00(
18
)
Approved Pro

Iconiq Construction, LLC

5.00(
18
)
Approved Pro
Customers say: Quick response
2023 years of experience
Free onsite estimate

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!

"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."

Michael K on August 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!

"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."

Michael K on August 2025


Avatar for Attic Doctor LLC

Attic Doctor LLC

5.00(
15
)
Approved Pro

Attic Doctor LLC

5.00(
15
)
Approved Pro
Super Service Award
Customers say: Quick response
2023 years of experience
Free onsite estimate

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!

"Rodent exclusion work - they keep coming back until it’s done! No other rodent exclusion outfits I had out offered any kind of guarantee. After 6 months I needed them again and they were here in a flash! Amazing customer service. "

Anja C on July 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!

"Rodent exclusion work - they keep coming back until it’s done! No other rodent exclusion outfits I had out offered any kind of guarantee. After 6 months I needed them again and they were here in a flash! Amazing customer service. "

Anja C on July 2025


Avatar for Groundworks

Groundworks

4.68(
25
)
Approved Pro

Groundworks

4.68(
25
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
2006 years of experience

Since 1987, Groundworks has specialized in helping homeowners with their foundation repair, waterproofing, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across North-West Washington. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your basement, foundation, or crawl space. GROUN**76305

"Current employee of the Arlington Location posted this on her social media account."

John S on September 2025

Since 1987, Groundworks has specialized in helping homeowners with their foundation repair, waterproofing, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across North-West Washington. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your basement, foundation, or crawl space. GROUN**76305

"Current employee of the Arlington Location posted this on her social media account."

John S on September 2025


Avatar for Andy Construction LLC

Andy Construction LLC

5.00(
20
)
Approved Pro

Andy Construction LLC

5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2011 years of experience

We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!

"They did a great job"

Chris D on May 2025

We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!

"They did a great job"

Chris D on May 2025


Avatar for Groundworks

Groundworks

4.44(
162
)
Approved Pro

Groundworks

4.44(
162
)
Approved Pro
Customers say: Super punctual
1997 years of experience
Free onsite estimate

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! GROUN**76305

"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! GROUN**76305

"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


Avatar for Supreme Home Improvements

Supreme Home Improvements

4.92(
13
)
Approved Pro

Supreme Home Improvements

4.92(
13
)
Approved Pro
2000 years of experience
Free onsite estimate

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"We had a lot of crumbling mortar in our basement walls and were worried about water getting in. Pro Mass Foundation and Masonry came in and did a fantastic job repointing everything. The guys were friendly, showed up on time, and kept us updated as they worked. Our basement looks solid now and we feel much more secure."

Arnob D on October 2025

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"We had a lot of crumbling mortar in our basement walls and were worried about water getting in. Pro Mass Foundation and Masonry came in and did a fantastic job repointing everything. The guys were friendly, showed up on time, and kept us updated as they worked. Our basement looks solid now and we feel much more secure."

Arnob D on October 2025


Avatar for Baklinski Home Improvement

Baklinski Home Improvement

4.69(
18
)
Approved Pro

Baklinski Home Improvement

4.69(
18
)
Approved Pro
Customers say: Quick response
2020 years of experience
Free onsite estimate

At Baklinski Home Improvement, we focus on giving you a great experience in all our services. We save you money on your repair bills and add value to your home. We reduce your stress of having to call many contractors to complete different aspects of your job. Our prices are affordable and we get the job done right the first time – with no shortcuts. No job is too big or too small for us to tackle. Give us a call so that we can help you with your next project.

"We hired Andrew and his team to install some safety features in our home: grab bars, railings, some dry wall repair. The quality of work was excellent. Andrew and Josiah kept us informed throughout the project. Both men were easy to work with and did a wonderful job of cleaning up as they went along.. We have already hired them for a kitchen project in our home!"

Mary Beth S on December 2023

At Baklinski Home Improvement, we focus on giving you a great experience in all our services. We save you money on your repair bills and add value to your home. We reduce your stress of having to call many contractors to complete different aspects of your job. Our prices are affordable and we get the job done right the first time – with no shortcuts. No job is too big or too small for us to tackle. Give us a call so that we can help you with your next project.

"We hired Andrew and his team to install some safety features in our home: grab bars, railings, some dry wall repair. The quality of work was excellent. Andrew and Josiah kept us informed throughout the project. Both men were easy to work with and did a wonderful job of cleaning up as they went along.. We have already hired them for a kitchen project in our home!"

Mary Beth S on December 2023

...
Showing 1-10 of 206
Basement Waterproofing questions, answered by experts

Crawl spaces are the more desirable option overall because they provide additional space for storage and utilities, but they are more expensive to install and maintain. Slab foundations are considered a better option in warmer climates where the depth of the frost line isn’t an issue because they’re more affordable, but crawl spaces are better in areas where the frost line is deep or where flooding can be an issue.

Yes, barndominiums can have basements. Barndominiums are typically built over concrete slabs, so barndo basements are not very common. However, it is possible to include a basement in a barndominium blueprint as long as you’re building completely from scratch. Barndos can have the same types of basements as traditional homes, including full or walk-out basements.

Interlocking garage tiles made with PVC are the most effective for garages with past issues of humidity and flooding because damp concrete is not suitable for paint. Epoxy coating is also water-resistant and can prevent mold buildup. Finally, porcelain tiles are a wonderful option for wet conditions if your budget allows.

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

Waterproofing or encapsulating protects against moisture, preventing mold growth and structural damage. These services also enhance energy efficiency and improve air quality by keeping humidity levels in check.

The Issaquah, WA homeowners’ guide to basement waterproofing services

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