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
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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.

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 296 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

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.
We had great experience with Seth, he was polite, kind, communicative, and on time. Would highly recommend!
TerraFirma did a great job with the earthquake update on our home. They were friendly and performed the work in the time expected and at the agreed cost.
I recently purchased a home that I knew had water encroachment in the basement. Terra Firma came and presented what can be done and I knew it had to be done. Tieran and his crew came in and did exactly what was explained to me. They answered all my questions and I feel very confident it will be a dry basement going forward. I highly recommend this company for any work that needs to be done to foundation, water issues, crawl space etc. Fantastic company!
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
This is the 3rd time I have worked with this company. Very satisfied every time.Seth was very professional and easy to work with.
Edit review: I have used this company in the past and will do so in the future. I had a poor experience with scheduling (largely attributed to the Microsoft outage) and a surprise quote adjustment on the day of install.However, after working with the management team, a remedy and resolution was reached that left me feeling this was an unfortunate exception to their general high-quality service and standards.4/5 stars due to some bumps in the road but they ultimately made it right.
During my search on-line for a source of repair for cracks in our cement driveway, I found the TerraFirma Foundations Systems website most appealing. I invited Seth, Systems Design Specialist, to provide an estimate. He provided a thorough explanation of TerraFirma's method for repairing cracks. He examined the driveway, made the necessary measurements, and provided a reasonable estimate--considering the extent of the current damage. The project was scheduled to be accomplished in two phases. Phase 1 scheduled Nov 2024: foam injection to stabilize the cement pads thereby preventing further damage. Phase 2 scheduled May 2025 or sooner depending on the weather. This delay was a consequence of my procrastination to tackle the project earlier and TerraFirma's determination to ensure the repair would suffice to fulfill their 5-year warranty.Employees Robert and Elijah arrived on the scene as scheduled. While I observed their work, they impressed me with their professionalism and efficiency as an experienced team. They put forth an obvious desire to do an exceptional job thereby giving me confidence in the performance of the task and TerraFirma overall.Standby for my review this summer regarding Phase 2.
Seth Cunningham came to do an assessment of our home last week, he was friendly, easy to talk with, walked us through different options, and was great at communicating about next steps and what to expect. I particularly appreciated that he didn't use any scare tactics and I didn't feel pressured to make a decision.
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.
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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