Northwest Poly Services specializes in lifting concrete. We’re here to help our fellow residential, commercial, and municipal neighbors repair their sunken concrete slabs, walkways, and stairs. Our Pacific Northwest climate makes large demands on our soil, often causing our sidewalks, garage floors, and concrete slabs to settle and become uneven. This can lead to trip hazards, or worse, more major problems like drainage and soil erosion. Let us help! By drilling a small hole through your sinking concrete and injecting our poly foam solution, we can lift those problem areas level again. We serve Snohomish, Skagit, Whatcom, Island, and San Juan Counties. Give us a call or send us an email for a Free Estimate. Our service comes with a 25 Year Transferable Warranty and proceeds from every job go right back to the communities we live and work in.
"They raised a sunken cement sidewalk. They were punctual, efficient, explained things well, friendly, cleaned up, and did great work! Beautiful! I highly recommend them!"
Holly S on June 2022
Northwest Poly Services specializes in lifting concrete. We’re here to help our fellow residential, commercial, and municipal neighbors repair their sunken concrete slabs, walkways, and stairs. Our Pacific Northwest climate makes large demands on our soil, often causing our sidewalks, garage floors, and concrete slabs to settle and become uneven. This can lead to trip hazards, or worse, more major problems like drainage and soil erosion. Let us help! By drilling a small hole through your sinking concrete and injecting our poly foam solution, we can lift those problem areas level again. We serve Snohomish, Skagit, Whatcom, Island, and San Juan Counties. Give us a call or send us an email for a Free Estimate. Our service comes with a 25 Year Transferable Warranty and proceeds from every job go right back to the communities we live and work in.
"They raised a sunken cement sidewalk. They were punctual, efficient, explained things well, friendly, cleaned up, and did great work! Beautiful! I highly recommend them!"
Holly S on June 2022
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Highly recommend. From my consultation with Kirsten to the the job with Wyatt and his crew of Tucker and Quevin, everything was done in a professional manner. If I owned the company these are the kind of employees I would want to have working for me!"
Vern J on December 2024
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Highly recommend. From my consultation with Kirsten to the the job with Wyatt and his crew of Tucker and Quevin, everything was done in a professional manner. If I owned the company these are the kind of employees I would want to have working for me!"
Vern J on December 2024
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the Seattle area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"I just had the BEST experience with Groundworks, working with Brian Eames, and the crew of Alex, Iuri and Luis. My project was a big project consisting of installation of approximately 40 pier piles, pin piles and helical piles to my foundation, in order to better anchor my home to the bedrock (I live on a hill). I was EXTREMELY nervous about the project and planned for it for a year and a half. Brian consistently calmed my fears every step of the way, and each time I had a question, he took as much time as needed to give me all the answers and reassure me. When my project finally occurred last week, I was immediately comforted by the presence of the crew - Alex, Iuri and Luis. They were professional, respectful, kind, and explained everything in detail before they started on the project to alleviate any concerns I had. When the project was complete, the clean up was amazing, They put everything back together perfectly, and it was as if they had never been here. I now have t"
Ho G on April 2025
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the Seattle area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"I just had the BEST experience with Groundworks, working with Brian Eames, and the crew of Alex, Iuri and Luis. My project was a big project consisting of installation of approximately 40 pier piles, pin piles and helical piles to my foundation, in order to better anchor my home to the bedrock (I live on a hill). I was EXTREMELY nervous about the project and planned for it for a year and a half. Brian consistently calmed my fears every step of the way, and each time I had a question, he took as much time as needed to give me all the answers and reassure me. When my project finally occurred last week, I was immediately comforted by the presence of the crew - Alex, Iuri and Luis. They were professional, respectful, kind, and explained everything in detail before they started on the project to alleviate any concerns I had. When the project was complete, the clean up was amazing, They put everything back together perfectly, and it was as if they had never been here. I now have t"
Ho G on April 2025
Using state of the art Geo-Polymer injection. Slabjack Geotechnical offers a cost effective alternative to concrete replacement and mud-jacking. Save up to 50% or more over removal and replacement costs! With years of experience, we solve customers concrete settling problems in Eastern and Central Washington and north Idaho, with locations now in Tri-cities, Wenatchee, Spokane and Puget Sound; We serve all surrounding areas. We raise sunken basements, garage floors, porches/stoops, driveways, walkways, pool decks and more. We also seal and stabilize seawalls and bulkheads, leaking culverts and large diameter concrete pipe. Check our our website www.slabjackgeotechnical.com for more information. Superior technology, Superior polymers, Superior results!
"All interactions in the job bid, approval and scheduling were friendly and professional. Dustin and Jaime did an awesome job!!! They arrived on time, went over the job in detail with me, and then went to work. As the job progressed they kept me informed of any issues that arose and made sure I was happy with the process. The final results were flawless and they left the jobsite spotless. I would hire this company again in a heartbeat!!!"
John G on October 2024
Using state of the art Geo-Polymer injection. Slabjack Geotechnical offers a cost effective alternative to concrete replacement and mud-jacking. Save up to 50% or more over removal and replacement costs! With years of experience, we solve customers concrete settling problems in Eastern and Central Washington and north Idaho, with locations now in Tri-cities, Wenatchee, Spokane and Puget Sound; We serve all surrounding areas. We raise sunken basements, garage floors, porches/stoops, driveways, walkways, pool decks and more. We also seal and stabilize seawalls and bulkheads, leaking culverts and large diameter concrete pipe. Check our our website www.slabjackgeotechnical.com for more information. Superior technology, Superior polymers, Superior results!
"All interactions in the job bid, approval and scheduling were friendly and professional. Dustin and Jaime did an awesome job!!! They arrived on time, went over the job in detail with me, and then went to work. As the job progressed they kept me informed of any issues that arose and made sure I was happy with the process. The final results were flawless and they left the jobsite spotless. I would hire this company again in a heartbeat!!!"
John G on October 2024
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.
"Was a great experience, professional and fast."
David F on April 2025
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.
"Was a great experience, professional and fast."
David F on April 2025
We raise 'sunken' concrete! Our polyurethane concrete raising system allows you to restore sunken, cracked and damaged concrete at a fraction of the cost of replacement. For sunken driveway or patio slabs, uneven basement floors or walkways, and other issues with concrete and cement surfaces, 1-866 SLABJACK is your local concrete expert. We serve residential and commercial customers in King, Snohomish, Skagit, Pierce and Thurston Counties. - Patio Restoration - Driveway Leveling - Uneven walkways - Sunken porches
"The staff were extremely friendly, explained what they were doing, and did an excellent job. I highly recommend this company to anyone who needs slabjacking!!"
caroline d on June 2019
We raise 'sunken' concrete! Our polyurethane concrete raising system allows you to restore sunken, cracked and damaged concrete at a fraction of the cost of replacement. For sunken driveway or patio slabs, uneven basement floors or walkways, and other issues with concrete and cement surfaces, 1-866 SLABJACK is your local concrete expert. We serve residential and commercial customers in King, Snohomish, Skagit, Pierce and Thurston Counties. - Patio Restoration - Driveway Leveling - Uneven walkways - Sunken porches
"The staff were extremely friendly, explained what they were doing, and did an excellent job. I highly recommend this company to anyone who needs slabjacking!!"
caroline d on June 2019
Welcome to Gilaco Demo! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!
"I had to replace my fence. Price was good, did a good job and was done in a few hours."
Thomas K on March 2025
Welcome to Gilaco Demo! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!
"I had to replace my fence. Price was good, did a good job and was done in a few hours."
Thomas K 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
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
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
CD Paver Management is a locally owned and operated company, Licensed Bonded and Insured. We are a premier installer and designer of paving stones and retaining walls for commercial and residential projects. Our staff is fully trained in craftsmanship and we offer on-going training to ensure our expertise in this fast growing industry. We only offer the best products available. We offer the highest industry standards are used on your project. With superior service you have come to expect from an industry leader, Brick Paver & Landscaping LLC. is proud to provide top tier customer care for each and every valued client. With free estimates and an extensive inventory of cutting edge paving products, we have built a loyal clientele through reliable craftsmanship.
"Dishonest and unprofessional, profits over customer service, please stay away from this business. Quote was fair for my new patio of about 700ft, signed contract in Aug and estimated project start within 4-6 weeks, then problems started: 1. Scheduling nightmare Kept putting off my project and was told they had to finish some big projects first, and in Oct when it was well beyond the promised project start dates, the owner Cary called me to COMPLAIN angrily that they are annoyed by my request for ETA, and they have no idea when my project would start. The office manager Karen soon texted to apologize for Cary's behavior, but clearly this company doesn't value their customers and have no regard for the contract. 2. Crew urinating on my wall, unprofessional On project start day, no project manager onsite, no honey bucket for crew to use, the crew lead was constantly smoking and tossing cigarette butt around in my yard. Later when I complained, Karey argued the honey bucket would cost them $250 and I should not take advantage of them. Just unbelievable. Also the entire crew don't speak any English, it was impossible to communicate timely and make adjustments without project manager onsite . 3. Dishonest, still haven't fixed quality problem as promised Last day of project, crew was rushing to finish and didn't follow the original design on the patio landing area, and when I asked them to wait for 20 minutes so I can inspect because I was in a meeting at work, they refused and just left. Next day when I reported the issue, the office manager Karen texted me to "Stop taking advantage of them", "It costs them money to fix things" and finally she said they will come to fix only after collecting the remaining payment. I trusted them but it was a big mistake, no response at all about the fix after I paid the remaining half, clearly this business is used to telling lies and can't be trusted. Demand of patio projects is high during the pandemic, but there is no excuse for cutting corners, being dishonest, unethical and unprofessional!"
ryan l on November 2021
CD Paver Management is a locally owned and operated company, Licensed Bonded and Insured. We are a premier installer and designer of paving stones and retaining walls for commercial and residential projects. Our staff is fully trained in craftsmanship and we offer on-going training to ensure our expertise in this fast growing industry. We only offer the best products available. We offer the highest industry standards are used on your project. With superior service you have come to expect from an industry leader, Brick Paver & Landscaping LLC. is proud to provide top tier customer care for each and every valued client. With free estimates and an extensive inventory of cutting edge paving products, we have built a loyal clientele through reliable craftsmanship.
"Dishonest and unprofessional, profits over customer service, please stay away from this business. Quote was fair for my new patio of about 700ft, signed contract in Aug and estimated project start within 4-6 weeks, then problems started: 1. Scheduling nightmare Kept putting off my project and was told they had to finish some big projects first, and in Oct when it was well beyond the promised project start dates, the owner Cary called me to COMPLAIN angrily that they are annoyed by my request for ETA, and they have no idea when my project would start. The office manager Karen soon texted to apologize for Cary's behavior, but clearly this company doesn't value their customers and have no regard for the contract. 2. Crew urinating on my wall, unprofessional On project start day, no project manager onsite, no honey bucket for crew to use, the crew lead was constantly smoking and tossing cigarette butt around in my yard. Later when I complained, Karey argued the honey bucket would cost them $250 and I should not take advantage of them. Just unbelievable. Also the entire crew don't speak any English, it was impossible to communicate timely and make adjustments without project manager onsite . 3. Dishonest, still haven't fixed quality problem as promised Last day of project, crew was rushing to finish and didn't follow the original design on the patio landing area, and when I asked them to wait for 20 minutes so I can inspect because I was in a meeting at work, they refused and just left. Next day when I reported the issue, the office manager Karen texted me to "Stop taking advantage of them", "It costs them money to fix things" and finally she said they will come to fix only after collecting the remaining payment. I trusted them but it was a big mistake, no response at all about the fix after I paid the remaining half, clearly this business is used to telling lies and can't be trusted. Demand of patio projects is high during the pandemic, but there is no excuse for cutting corners, being dishonest, unethical and unprofessional!"
ryan l on November 2021
Mudjacking and foam jacking differ significantly in both materials and methods. Mudjacking uses a cement-based slurry to fill voids beneath a slab, while foam jacking uses expanding polyurethane foam delivered under high pressure to achieve superior structural support. This material distinction enhances load-bearing strength and overall stability in your repair.
Mudjacking takes between one and three days to dry completely. During this time, it's important to avoid putting weight on the slab until it's fully cured. The drying time depends on the project size and environmental conditions. In contrast, polyurethane foam used in foam jacking can cure in as little as one hour.
No, mudjacking is not a permanent fix for sinking concrete. While it effectively lifts the slab and can last five to 10 years, it doesn't address underlying soil issues that may cause future sinking. For a more permanent solution, you might consider foam jacking or complete slab replacement, which can address deeper structural problems.