Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Allyn, WA

Enter your zip and get matched with up to 5 pros

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

Select your specific project to find the pro for you.

TRUSTED BY ALLYN, WA HOMEOWNERS

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

Verified Reviews for Basement Waterproofing pros in Allyn, WA

*The Angi rating for Basement Waterproofing companies in Allyn, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Allyn, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on November 22, 2025

Find Basement waterproofing pros in Allyn

Avatar for Rain Pros Inc

Rain Pros Inc

4.76(
413
)
•Approved Pro

Rain Pros Inc

4.76(
413
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% 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 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 TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
10
)
•Approved Pro

TerraFirma Foundation Systems

5.00(
10
)
•Approved Pro
Customers say: Quick response
2005 years of experience
Free onsite estimate

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Great; competitive price, installation went great, friendly and responsive staff in person and office"

Andrew M on February 2020

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Great; competitive price, installation went great, friendly and responsive staff in person and office"

Andrew M on February 2020

Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

4.52(
66
)
•Approved Pro

TerraFirma Foundation Systems

4.52(
66
)
•Approved Pro
Customers say: Quick response
2005 years of experience
Free onsite estimate

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Good and fair estimate. Good solution to our problem. The team were very professional and produced excellent results."

Stuart D on November 2025

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"Good and fair estimate. Good solution to our problem. The team were very professional and produced excellent results."

Stuart D on November 2025

Avatar for BUILDING PERFORMANCE PROS LLC

BUILDING PERFORMANCE PROS LLC

5.00(
1
)
•Approved Pro

BUILDING PERFORMANCE PROS LLC

5.00(
1
)
•Approved Pro
2025 years of experience
Free onsite estimate

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!

"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!"

Nancy W on October 2025

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!

"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!"

Nancy W on October 2025

A Better Crawl Inc

4.95(
41
)

A Better Crawl Inc

4.95(
41
)
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

A Better Crawl, Inc. email- [email protected]. Service area covered: Kitsap, Mason and parts of Pierce county, The Kitsap and Olympic Peninsulas, Olympia and vicinity.

"What did we not need...? They quickly and efficiently replaced everything in our crawlspace... insulation, missing screens, open external access, etc. And they installed a barrier beneath a bay window that had allowed animal access to the crawlspace ever since the home was built in the 80s. Very professional and friendly. I highly recommend them!"

Robert S on July 2018

A Better Crawl, Inc. email- [email protected]. Service area covered: Kitsap, Mason and parts of Pierce county, The Kitsap and Olympic Peninsulas, Olympia and vicinity.

"What did we not need...? They quickly and efficiently replaced everything in our crawlspace... insulation, missing screens, open external access, etc. And they installed a barrier beneath a bay window that had allowed animal access to the crawlspace ever since the home was built in the 80s. Very professional and friendly. I highly recommend them!"

Robert S on July 2018

Avatar for Crawl Pros

Crawl Pros

4.80(
251
)

Crawl Pros

4.80(
251
)
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Crawl Pros is a whole home insulation contractor that specializes in residential retrofit and offers the most environmentally friendly materials for all applications and budgets.

"At every step along the way they were thorough and professional. The estimator provided a very detailed scope and quote and patiently answered my questions. The installation crew was quick, efficient, friendly, and were so meticulous with their prep that up you couldn't even tell they were here after they left. I also appreciated the "after-photos" they sent me, it looks great!"

Paul P on August 2020

Crawl Pros is a whole home insulation contractor that specializes in residential retrofit and offers the most environmentally friendly materials for all applications and budgets.

"At every step along the way they were thorough and professional. The estimator provided a very detailed scope and quote and patiently answered my questions. The installation crew was quick, efficient, friendly, and were so meticulous with their prep that up you couldn't even tell they were here after they left. I also appreciated the "after-photos" they sent me, it looks great!"

Paul P on August 2020

Avatar for A+ Pest Control LLC

A+ Pest Control LLC

4.80(
71
)

A+ Pest Control LLC

4.80(
71
)
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Here at A Plus Pest Control LLC. we take pride in providing the best services and satisfying our customer needs. We specialize in Pest Control Service for Ants, Bees/wasps, Bird exclusion and clean-up, Cockroaches, Crawl space restorations, Commercial services, Pantry Pests and much more. We look forward to your business and serving you. Contact us today (360) 400-2847

"Very professional, very knowledgeable, very respectful, always on time."

Cheryl G on February 2020

Here at A Plus Pest Control LLC. we take pride in providing the best services and satisfying our customer needs. We specialize in Pest Control Service for Ants, Bees/wasps, Bird exclusion and clean-up, Cockroaches, Crawl space restorations, Commercial services, Pantry Pests and much more. We look forward to your business and serving you. Contact us today (360) 400-2847

"Very professional, very knowledgeable, very respectful, always on time."

Cheryl G on February 2020

...
Showing 1-10 of 88
Basement Waterproofing questions, answered by experts

You don’t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It’s ideal for homes in humid areas.

In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.

It can be safe to live in a house with minor foundation problems as long as the issues are checked and monitored by a professional. Minor cracks are rarely a cause for structural concerns, but signs of leaks, sinking, or bulging walls should be strongly scrutinized by a foundation specialist. Similarly, it's always smart to hire a professional when you're concerned about buying a house with foundation repairs.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

You should take care of any sign of water in your basement, whether it’s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home’s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With mold remediation costs ranging between $1,200 and $3,400, it’s best to avoid mold issues by fixing the leak.

Alternatives to gutter systems include rain chains and drip edges, which work to disperse rain coming off of your roof to a wider section of the ground to prevent erosion and pooling. These options aren’t standalone alternatives to gutters in all parts of the country because they don’t divert water. They’re often reserved for dry climates. On the ground, you can also opt for a drip path or French drain. These can serve as standalone alternatives, but they’re expensive and can detract from your curb appeal and usable yard.

The Allyn, WA homeowners’ guide to basement waterproofing services

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

See all articles