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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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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.

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. 

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.

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Google Rating
4.7
Based on 307 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?

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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 307 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

I should have posted a review years ago when Terra Firm lifted up our sinking home in Olympia (the floor was an inch below the baseboards) and encapsulated...
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
Samuel with TerraFirma did a great job diagnosing the issue and providing with options to fix. He was patient and answered all questions. I was impressed with the lifetime warranty for the work they do and seriously considering their services.
Though I was just a tad disappointed when Sam himself didn't show up to do the job, I thought his replacement, Tieran(?) was just as charming. He knew his...
Fastest turnaround time and most thorough bid I have ever seen! Sam goes way beyond the normal review and discusses the options with clients in a way that is clear and concise. Confident that the work will be beyond expected as well.
I had a consultation with Riley for some water damage in my basement. He was courteous (took his shoes off before coming in the house), informing and on time. It seems like this team has great communication and I will use them in the future should the need arise! My issue was a smaller drainage problem and door framing issue that needs to be addressed by a different specialty.
100% will recommend this company. Friendly, respectful, professional employees. Rare in these days and times.
They follow through and are very helpful. We also used them 5 years ago and do very happy. I respect them and what they do. Joanie Chambers
A few days after moving into our home we noted some serious issues with our outdoor drainage.
Over the course of just 2 days of rain in the Pacific NW, water was flowing into the garage and crawl space rather than away from the house.
We needed an evaluation and a plan asap. Based on reviews and services available, a quick call to TerraFirma was the answer.
I had an appointment within a few days. We were very pleased when Seth arrived and explained that, by the end of today’s visit we would have a detailed plan including the cost. As we walked around the entire foundation and yard Seth was open to questions and explained details of what he was noticing. Seth was also taking note of other potential issue that could be avoided with some preventive DIY care.
The extensive evaluation resulted in great news. Although we knew it was going to be an expensive project, due to the labor involved, Seth presented an optimal approach for a permanent solution at a fair price.
We were very happy working with Seth and TerraFirma.

Steve and Toni
Shelton,WA
I had a sinking porch and sinking driveway. I had addressed the porch with another company about 7 years ago and they were completely out of the ballpark...
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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