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
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!
"Groundworks were contracted to encapsulate the crawl space, with a dehumidifier, intellijacks & sump pump. The inspector showed us pictures & videos of what the work would look like on completion, & explained how each solution would be installed. They tried to charge me more for vent covers until I showed them the contract covering this part. The foreman told me there was a reset button for the sump pump to be installed on an exterior wall, but they did not install it, instead said they would put in a service order. I haven’t heard anything about this issue yet. When they installed the moister barrier, they excluded the cement pads I was told it cost extra to have them covered. When I signed the contract, I was never told there would be extra charges for vent covers or cement pads to be covered. The contract I signed covered a complete encapsulation, but this is not what I got. This is a bait & switch. I would not recommend Groundworks."
Fran F on March 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!
"Groundworks were contracted to encapsulate the crawl space, with a dehumidifier, intellijacks & sump pump. The inspector showed us pictures & videos of what the work would look like on completion, & explained how each solution would be installed. They tried to charge me more for vent covers until I showed them the contract covering this part. The foreman told me there was a reset button for the sump pump to be installed on an exterior wall, but they did not install it, instead said they would put in a service order. I haven’t heard anything about this issue yet. When they installed the moister barrier, they excluded the cement pads I was told it cost extra to have them covered. When I signed the contract, I was never told there would be extra charges for vent covers or cement pads to be covered. The contract I signed covered a complete encapsulation, but this is not what I got. This is a bait & switch. I would not recommend Groundworks."
Fran F on March 2025
20+ years in Business Full Landscape Design & Installation Paver Installation - Driveways, Patios, Walkways, etc. Mortar & Sand Set Flagstone Installation Water Features - Ponds, Waterfalls, Streams & Fountains Natural Rock Outcroppings Stone Masonry Irrigation Systems Outdoor Fire Pits Stone Columns Custom Cut Benches and Steps
20+ years in Business Full Landscape Design & Installation Paver Installation - Driveways, Patios, Walkways, etc. Mortar & Sand Set Flagstone Installation Water Features - Ponds, Waterfalls, Streams & Fountains Natural Rock Outcroppings Stone Masonry Irrigation Systems Outdoor Fire Pits Stone Columns Custom Cut Benches and Steps
Landscaping business locally owned and operated we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Fantastic! Suggested stairs where I hadn't thought, turned out to be the best feature."
Ken N on March 2025
Landscaping business locally owned and operated we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Fantastic! Suggested stairs where I hadn't thought, turned out to be the best feature."
Ken N on March 2025
We specialize in concrete finishing services and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Rome was extremely efficient, instantly texted back, showed up early and even did a little extra to help me out. The cement work looks fantastic. Highly recommend."
Beth A on April 2025
We specialize in concrete finishing services and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Rome was extremely efficient, instantly texted back, showed up early and even did a little extra to help me out. The cement work looks fantastic. Highly recommend."
Beth A on April 2025
We offer a variety of excavating and septic system services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"Went great, very professional, Awsome communication, and plainly got the job done when I needed it! They did foundation cut and gravel/ rock deliveries/ tree removal. Very happy as I always am with working with them! Fair price for great work!"
Nick M on November 2024
We offer a variety of excavating and septic system services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"Went great, very professional, Awsome communication, and plainly got the job done when I needed it! They did foundation cut and gravel/ rock deliveries/ tree removal. Very happy as I always am with working with them! Fair price for great work!"
Nick M on November 2024
Landscaping Services and Tree Services We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!
"Went very well. Quick and professional. Would definitely use again."
Jeffery H on May 2024
Landscaping Services and Tree Services We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!
"Went very well. Quick and professional. Would definitely use again."
Jeffery H on May 2024
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Alex is incredibly honest, pragmatic and helpful. He assessed our community’s potential need and proceeded to discuss any potential restrictions on drainage with the county. We are restricted due to the infrastructure in the proposed drainage area - his thoroughness lost him work but gained our respect. We will look to him for any and all similar projects in the future."
Gabrielle D on February 2025
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!
"Alex is incredibly honest, pragmatic and helpful. He assessed our community’s potential need and proceeded to discuss any potential restrictions on drainage with the county. We are restricted due to the infrastructure in the proposed drainage area - his thoroughness lost him work but gained our respect. We will look to him for any and all similar projects in the future."
Gabrielle D on February 2025
We specialize in all phases of landscaping, hardscaping, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"They were very punctual professional, and did an amazing job. Definitely would recommend."
Kayla R on August 2024
We specialize in all phases of landscaping, hardscaping, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"They were very punctual professional, and did an amazing job. Definitely would recommend."
Kayla R on August 2024
As professional Landscapers we will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or click to schedule an estimate today!
As professional Landscapers we will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or click to schedule an estimate today!
Most sidewalks rely on a ready‑mix blend of Portland cement, sand, gravel, and water that trucks deliver to your site and pour in one continuous lift. For added strength, many contractors fold in fiber mesh or steel reinforcement. This mix cures into a rock‑solid slab that stands up to foot traffic, freeze‑thaw cycles, and daily wear for decades. Expect a pro to recommend a 4‑inch‑thick pour for standard walkways.
With the right mix, proper drainage, and routine upkeep, a concrete sidewalk can last 25 to 50 years. Freeze‑thaw cycles, road salt, and heavy loads all shorten that timeline, but sealing every few years and patching small cracks early keeps damage in check. Think of sealing as inexpensive insurance for decades of safe, stable footing. In milder climates, some slabs push well past the 30‑year mark without major repairs.
Concrete sidewalks crack as a result of significant temperature fluctuations and heavy load pressures. The freeze-thaw cycles and sustained weight from vehicles or intense foot traffic force the concrete to develop cracks over time. Applying a premium sealant every two to three years and substituting salt with sand for de-icing minimizes crack formation. Regular maintenance and timely repairs safeguard the sidewalk’s structural integrity and extend its service life.