Foundation Contractors in Seattle | TerraFirma

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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

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.

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 269 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

TerraFirma had sent a very nice gentleman come out to my house, his name was Seth Cunningham. He was very polite and thorough about his job. Great service. I would recommend this service.
Very professional organization. It was from the estimate process to completion. If anyone has a concrete leveling project I recommend this company 100%.
The guys did a good job at fixing the problem with my foundation and they luckily even got me in earlier than scheduled. They are more expensive though and left a mess as far as dirt/mud all over the sidewalk. The 'inspection' guy who first came out to give me an estimate stated that it would include putting the pavers back and cleanup. I had to ask them to do that as they were leaving without doing so. They did put the pavers back, but no cleanup. They gave a 25 year warrantee on workmanship and 75 year warrantee on the products used.
Seth from TerraFirma did a great job in measuring and providing the estimate for our house. He was very patient in walking us through different scenarios and introducing the tech specs of the proposed solution options. Super helpful for us.
Mark came on behalf of the company to give me an estimate of the work on my crawl space. He was honest and straight about all the observations he had. He gave me some ideas of how to reduce the cost , even part of the job I could do by myself based on his guidelines.
Seth from Terra firma is great I highly definitely recommend him. Thank you
Seth was helpful and informative. He was able to come evaluate the project right away and provide solutions to the issues.
From the estimate to the finish Terra Firma personnel were top notch. We are pleased with their work. They used high quality materials, and the crew were hard workers.We had a small glitch, but they took care of it right away.
My pest inspector found a lot of water in my crawl space after a routine inspection. A plumber found no leaks and believed it to be ground water. TerraFirma responded to my needs promptly and ended up digging a ditch around the inside perimeter of my crawl space, inserted pipe and covered with river rock for drainage. A sump pump was installed inside to drain outside. They took such care with the drain they dug outside that when they were finished you could hardly tell where they had dug the ditch. They took such care to protect my home - especially since the crawl space access was inside my home. They protected my floors and walls very carefully and completely - even with having to bring in numerous wheelbarrows of rock. They also cleaned up both inside and outside my home so you couldn't tell anyone had worked all day to completed this large job. They did an amazing job!!! Thank you TerraFirma for your great work ethic and service.
Had Seth Cunningham out this week for an estimate in Thurston County. We appreciated how thorough he was during the inspection and in creating the proposal.Seth was prompt, easy to work with and very professional! Unfortunately, full encapsulation of our crawl space was a little out of our budget as new homeowners, but if you are looking for any foundation or crawl space work done on your house we would definitely recommend having TerraFirma out to look at your place! I got the impression they are a top-of-the-line company that would take care of the homeowners they do business with. I would absolutely recommend them to friends and family... Also plan to call them out if I have any concrete or foundation issues in the future.
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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