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Foundation Contractors in Seattle

Leaking in basements and crawl spaces in Seattle and Renton, WA

One of the primary concerns associated with rain in Seattle and
Renton is water leaking into homes. Rainwater can seep through
roofs, windows, and foundations, leading to leaks, moisture damage,
and mold growth if not properly addressed. Homes with older or
poorly maintained drainage systems may be particularly susceptible
to leaks during heavy rainfall.

Foundation contractors in Seattle are ready to assist you. Here are the top services we provide to keep your home structurally sound.

TerraFirma protects homes from damp, wet basements and foundations around Seattle
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TerraFirma
Seattle Office

10111 S Tacoma Way d4, Tacoma, WA 98499

Hours: Monday – Friday, 8am-5pm

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Preventing Flooded Basements

Basements are particularly vulnerable to flooding in Seattle. The key to preventing this is an efficient water management system.

Sump Pump

A sump pump is essential for homes with basements. It collects and pumps out excess water that gathers in a sump basin to prevent flooding.

Flood Drain

Installing a flood drain can save you from the nightmare of a flooded basement. It channels water away from your home, reducing the risk of water seeping in.

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Establishing Moisture Barriers in Crawl Spaces

Crawl spaces become damp and moldy when they’re unprotected in wet climates. That’s why a moisture barrier is essential! Installing a polyethylene sheet on the ground and walls of your crawl space can prevent moisture from seeping in. This keeps the area dry and reduces the risk of mold and mildew, which can cause health problems and structural damage. 

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Repairing Damaged Foundations

Cracks in foundations can occur due to various factors, including soil movement, shifting temperatures, and moisture changes. Over time, these conditions can cause the ground to expand or contract, putting stress on the foundation. Fortunately, TerraFirma’s foundation repair in Seattle can take care of these issues with the following techniques.

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Repairing Damaged Foundations

Cracks in foundations can occur due to various factors, including soil movement, shifting temperatures, and moisture changes. Over time, these conditions can cause the ground to expand or contract, putting stress on the foundation. Fortunately, TerraFirma’s foundation repair in Seattle can take care of these issues with the following techniques.

Foundation Reinforcement

Foundation reinforcement addresses cracks and weaknesses that develop over time. Steel or carbon fiber reinforcements can stabilize the foundation. This method is effective for handling the shifting soil conditions that are common in Washington.

Foundation Anchors

Foundation anchors provide additional support to homes with shifting or settling foundations. These anchors are installed deep into stable soil, holding the foundation in place. This technique is particularly useful in areas with loose or clay-heavy soil, which can cause foundations to move over time.

Choose TerraFirma for Foundation Repairs in Seattle

If you want your home to stand strong against Seattle’s relentless rain, TerraFirma is the way to go. Our team understands the unique challenges of the area, uses effective methods, and utilizes only high-quality materials for each job. Reach out to our foundation contractors in Seattle to keep your home safe and dry.

Award Winning
Results Begin Here.

Google Rating
4.7
Based on 314 reviews
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SEATTLE Homeowners Frequently Asked Questions

What types of cracks in my foundation or basement should I be concerned with?

What’s the cost of foundation repair in Seattle and Bellevue?

How to fix a leaking basement floor?

How to repair a sagging crawl space in Seattle and Bellevue?

How to stop water from leaking through my basement windows?

What type of pier to use for foundation repair in Seattle?

Are you noticing damp drywall and carpet in your basement?

How to repair damaged concrete in Seattle?

What’s the best way to repair concrete?

How to fix moisture issues in your crawl space?

How to protect my basement from leaking and flooding in Seattle?

What are the soil conditions in Seattle and Bellevue?

SCHEDULE A FREE
INSPECTION
IN Seattle

We offer free inspections to homeowners throughout King County. Contact us today and make sure your
home is in top shape!

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SEE WHAT YOUR NEIGHBORS
HAVE TO SAY ABOUT US!

At TerraFirma we take pride in our work! We are trusted and referred by homeowners since 2005, to provide solutions for home foundations, basement and crawl space moisture, concrete leveling, and earthquake retrofitting.

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Google Rating
4.7
Based on 314 reviews
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Seattle
Homeowner
REVIEWS

Don’t take our word for it – see what our clients have to say.
Throughout the greater Seattle area, including Renton, Bellevue, Kirkland, Auburn, and beyond, our work speaks for itself

Professional service - thank you
The guys were fantastic. Any requests I made were immediately address in the most professional manner. I love my house now. Neither my husband nor myself have had respiratory issues like before we had Terra Firma seal our foundation and add the dehumidifier. The best part is that I don’t have to empty the dehumidifier and my house is dry now. I would totally recommend this service!!’
We had great experience with Seth, he was polite, kind, communicative, and on time. Would highly recommend!
We are impressed with the knowledge and thorough and professional assessment of our home’s issue. Seth Cunningham was great at communicating information and providing answers to our concerns.
Installers were very professional. I asked for a few areas to be filled farther They made adjustments in areas that I asked gladly. I would recommend TerraFirm Foundation Systems to others. My back was out, the guys removed items from side of the house. Please give the installation team our thanks
Everette
Their salesman Sam came out to my property and did a great job answering any and all questions I had. He was very detailed and knowledgeable. He showed us a very cool informational video that gave me a lot more understanding of his scope of work. He was professional and polite. Would highly recommend!
Showed up on time, and leveled out my porch in just a couple of hours. Went above and beyond by dusting my Traeger and porch chairs after they were done. Highly recommend
Contacted terra firma about floor sagging. Sam came to evaluate and give an estimate. He listened carefully to what I wanted and thoroughly explained what...
Kudos to Riley, a TerraFirma System Design Specialist. Riley is a smart guy. Honest and communicative. He's focused on problem-solving instead of just selling products. You don't find that skill very often these days. I had an excellent experience getting a crawlspace encapsulation estimate from him.
This is the 3rd time I have worked with this company. Very satisfied every time.
Seth was very professional and easy to work with.
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TERRAFIRMA IN SEATTLE

With over 20 years of experience fixing foundations, basements, and crawlspaces, we know Seattle.
Maybe a little too well. Read on to find helpful homeowner tips, case studies, and before & after galleries
from our worlk in Bellevue, Redmond, Renton, and beyond.

Schedule your free
Foundation Evaluation

Schedule your free
Foundation Evaluation