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"We paid close to $20,000 to BQ Basements to completely waterproof our basement. We still get water and they told us we need another sump pump installed at over $2,000. They guaranteed we would not get water after installation. Be aware they do not stand behind their work or honor warranties."

Robert K on October 2025

Groundworks offers dependable foundation and crawl space repair solutions, basement waterproofing, and concrete lifting for New Jersey residents. We take pride in restoring the value and safety of homes in our local community.

"We paid close to $20,000 to BQ Basements to completely waterproof our basement. We still get water and they told us we need another sump pump installed at over $2,000. They guaranteed we would not get water after installation. Be aware they do not stand behind their work or honor warranties."

Robert K on October 2025


Avatar for Groundworks

Groundworks

4.78(
179
)
Approved Pro

Groundworks

4.78(
179
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
22 years of experience

Established in 2004, Groundworks is a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across New Jersey, we bring our local expertise closer to you. Groundworks proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 13VH11822900 (NJ)

"Working with DJ from Groundworks (Select Basement) has been an outstanding experience. After struggling with various contractors who either failed to resolve our water issues or were unprofessional, DJ and his team truly stood out. DJ was incredibly helpful, patient, and responsive throughout the entire process. Our home is a ranch with 225 linear feet around the perimeter, and while other contractors insisted on installing a French drain for the entire length, DJ recommended a more targeted approach. He proposed installing the French drain for just 80 linear feet, focusing only on the areas where water intrusion was likely. His thorough explanations and prompt responses to all our questions were greatly appreciated. The workers arrived on time, maintained a clean work environment, and completed the job as promised. If we could give 10 stars, we would! Groundworks is a highly professional and honest company that didn't try to inflate the scope of work to charge us more. We wholeheartedly recommend them."

Elina B on October 2024

Established in 2004, Groundworks is a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across New Jersey, we bring our local expertise closer to you. Groundworks proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 13VH11822900 (NJ)

"Working with DJ from Groundworks (Select Basement) has been an outstanding experience. After struggling with various contractors who either failed to resolve our water issues or were unprofessional, DJ and his team truly stood out. DJ was incredibly helpful, patient, and responsive throughout the entire process. Our home is a ranch with 225 linear feet around the perimeter, and while other contractors insisted on installing a French drain for the entire length, DJ recommended a more targeted approach. He proposed installing the French drain for just 80 linear feet, focusing only on the areas where water intrusion was likely. His thorough explanations and prompt responses to all our questions were greatly appreciated. The workers arrived on time, maintained a clean work environment, and completed the job as promised. If we could give 10 stars, we would! Groundworks is a highly professional and honest company that didn't try to inflate the scope of work to charge us more. We wholeheartedly recommend them."

Elina B on October 2024


Avatar for Quality 1st Basement Systems

Quality 1st Basement Systems

4.58(
253
)
Approved Pro

Quality 1st Basement Systems

4.58(
253
)
Approved Pro
Customers say: Super punctual
40 years of experience
Free onsite estimate

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023

Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.

"Everything went smoothly"

Hector R on December 2023


Avatar for Quality 1st Basement Systems, Inc.

Quality 1st Basement Systems, Inc.

4.59(
163
)
Approved Pro

Quality 1st Basement Systems, Inc.

4.59(
163
)
Approved Pro
Customers say: Quality work
39 years of experience
Free onsite estimate

Quality 1st Basements Inc. has been in business for 30 years and is part of large network of international dealers. Our System Design Specialists are experienced experts in Basement Waterproofing and Finishing, Foundation Repair, Crawl Space Repair and Concrete lifting & Leveling. Quality 1st Basements knows the importance of keeping your home healthy and dry and so we provide permanent solutions to protect your home. We pride ourselves on WOW service!

"Great job done by Tim and his team"

Jason K on May 2025

Quality 1st Basements Inc. has been in business for 30 years and is part of large network of international dealers. Our System Design Specialists are experienced experts in Basement Waterproofing and Finishing, Foundation Repair, Crawl Space Repair and Concrete lifting & Leveling. Quality 1st Basements knows the importance of keeping your home healthy and dry and so we provide permanent solutions to protect your home. We pride ourselves on WOW service!

"Great job done by Tim and his team"

Jason K on May 2025


"Anthony did my powder room over and I couldn’t be happier , fair price and does excellent tile work . Will definitely use again !"

Anthony B on August 2024

General Contractor

"Anthony did my powder room over and I couldn’t be happier , fair price and does excellent tile work . Will definitely use again !"

Anthony B on August 2024


Avatar for Down Under Waterproofing & Foundation Repair

Down Under Waterproofing & Foundation Repair

4.97(
39
)

Down Under Waterproofing & Foundation Repair

4.97(
39
)
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

Down Under Waterproofing, Inc. is a family-owned business that has been providing basement waterproofing, foundation and structural repair, basement finishing, stucco, retaining walls and masonry services. to the New Jersey and Eastern Pennsylvania areas since 2006. As a fully qualified, licensed and insured waterproofing and foundation repair contractor with over 2000 satisfied customers, we enjoy an excellent reputation and employ only the most effective and widely accepted methods in the industry.

"Walt, Max, and the whole crew were absolutely amazing. This was a HUGE project. We basically had no foundation on the back/ side of our house and the 2nd floor overhang was poorly supported. Prior to us purchasing the house the previous owner added a very large addition on top of a very old and poorly constructed “house” . The inspection at purchase did not uncover the issues that we found about two years after when all of the cosmetic touch ups wore off. Walt’s crew ( Supervised by Max) replaced the foundation wall , added piers under the house, replaced all of the floor joists along with new piers, beams, and headers on the 40ft span at the back of the house. This is just some of the larger items because I would be here forever if I listed everything they had to do. Walt kept us informed during the whole project. From start to finish we were on the same page. The house had so many hidden issues but the crew worked through all of it. The price was very reasonable and less then all of the other estimates from competitors. We didn’t have a bunch of surprise increases along the way. He didn’t try to scare us or sell us anything we didn’t need. They are honest and reliable. The results were amazing and so far beyond our expectations !!! They are all so talented. We couldn’t be happier with our choice of contractors!! They have been done for almost a week and we miss them being here already. I will recommend them to everyone."

Robin M on June 2021

Down Under Waterproofing, Inc. is a family-owned business that has been providing basement waterproofing, foundation and structural repair, basement finishing, stucco, retaining walls and masonry services. to the New Jersey and Eastern Pennsylvania areas since 2006. As a fully qualified, licensed and insured waterproofing and foundation repair contractor with over 2000 satisfied customers, we enjoy an excellent reputation and employ only the most effective and widely accepted methods in the industry.

"Walt, Max, and the whole crew were absolutely amazing. This was a HUGE project. We basically had no foundation on the back/ side of our house and the 2nd floor overhang was poorly supported. Prior to us purchasing the house the previous owner added a very large addition on top of a very old and poorly constructed “house” . The inspection at purchase did not uncover the issues that we found about two years after when all of the cosmetic touch ups wore off. Walt’s crew ( Supervised by Max) replaced the foundation wall , added piers under the house, replaced all of the floor joists along with new piers, beams, and headers on the 40ft span at the back of the house. This is just some of the larger items because I would be here forever if I listed everything they had to do. Walt kept us informed during the whole project. From start to finish we were on the same page. The house had so many hidden issues but the crew worked through all of it. The price was very reasonable and less then all of the other estimates from competitors. We didn’t have a bunch of surprise increases along the way. He didn’t try to scare us or sell us anything we didn’t need. They are honest and reliable. The results were amazing and so far beyond our expectations !!! They are all so talented. We couldn’t be happier with our choice of contractors!! They have been done for almost a week and we miss them being here already. I will recommend them to everyone."

Robin M on June 2021


Avatar for Concrete Chiropractor

Concrete Chiropractor

5.00(
11
)

Concrete Chiropractor

5.00(
11
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Concrete Repair. Concrete Raising Mudjacking, & Leveling Experts. Concrete Chiropractor. Trusted Leaders Since 2000! Raise your sunken or settled concrete for 1/3 to half the cost of replacement. We also repair cracked or bowed basement walls and apply self leveling cements to inside floor surfaces.

"I would like to thank Kris and Karen along with Mathew & Dave for a job well done. I have recommended Concrete Chiropractors to many of my friends Thanks again Jeff Emery"

Jeff E on June 2022

Concrete Repair. Concrete Raising Mudjacking, & Leveling Experts. Concrete Chiropractor. Trusted Leaders Since 2000! Raise your sunken or settled concrete for 1/3 to half the cost of replacement. We also repair cracked or bowed basement walls and apply self leveling cements to inside floor surfaces.

"I would like to thank Kris and Karen along with Mathew & Dave for a job well done. I have recommended Concrete Chiropractors to many of my friends Thanks again Jeff Emery"

Jeff E on June 2022


Avatar for Downes Construction

Downes Construction

5.00(
10
)

Downes Construction

5.00(
10
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

This business specializes in Masonry and General Contracting. Our company was built on quality assurance, and customer satisfaction. All work comes from word of mouth and recommendations. If you look at our facebook photo's you will see pictures of some the jobs we recently completed. We have been in business for over 20 years and are fully insured and licensed.

This business specializes in Masonry and General Contracting. Our company was built on quality assurance, and customer satisfaction. All work comes from word of mouth and recommendations. If you look at our facebook photo's you will see pictures of some the jobs we recently completed. We have been in business for over 20 years and are fully insured and licensed.


Avatar for Polonia Construction Inc.

Polonia Construction Inc.

4.95(
19
)

Polonia Construction Inc.

4.95(
19
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

For more than 25 years Polonia Construction has been providing top quality service to homes and businesses within the New Jersey/New York area. We are known for our dedication to customer service and excellence and always provide the utmost in quality and care on every job. We have highly trained and skilled masonry artisan craftsmen that have the experience needed to ensure that all of your desires, wishes and expectations are understood and delivered correctly the first time. We take pride in our work and always take the time to listen to the customer and make recommendations for the best materials and techniques for each individual job ensuring that the needs, budget and desires of the customer are fulfilled! Satisfied and happy customers are our primary goal and this account for more than 95% of our new business due to word of mouth referrals. When customers are treated with respect and are provided with the utmost in quality and craftsmanship, they are more than happy to share their experience with neighbors, family and friends. So, if you are looking for the best NJ masonry contractor, look no further we guarantee that you will be 100% satisfied with the quality of craftsmanship and customer service you will receive here at Polonia Construction, Inc.

"Hired them to do a concrete driveway (two and half cars wide from two cars wide) and a step up to front/side porch concrete underneath, with pavers on top. I had a blacktop driveway, concreate walkway, grass and 4 large bushes that needed to be removed before any work can be done. The staff is professional, efficient and friendly. Highly recommend!"

Danielle S on September 2022

For more than 25 years Polonia Construction has been providing top quality service to homes and businesses within the New Jersey/New York area. We are known for our dedication to customer service and excellence and always provide the utmost in quality and care on every job. We have highly trained and skilled masonry artisan craftsmen that have the experience needed to ensure that all of your desires, wishes and expectations are understood and delivered correctly the first time. We take pride in our work and always take the time to listen to the customer and make recommendations for the best materials and techniques for each individual job ensuring that the needs, budget and desires of the customer are fulfilled! Satisfied and happy customers are our primary goal and this account for more than 95% of our new business due to word of mouth referrals. When customers are treated with respect and are provided with the utmost in quality and craftsmanship, they are more than happy to share their experience with neighbors, family and friends. So, if you are looking for the best NJ masonry contractor, look no further we guarantee that you will be 100% satisfied with the quality of craftsmanship and customer service you will receive here at Polonia Construction, Inc.

"Hired them to do a concrete driveway (two and half cars wide from two cars wide) and a step up to front/side porch concrete underneath, with pavers on top. I had a blacktop driveway, concreate walkway, grass and 4 large bushes that needed to be removed before any work can be done. The staff is professional, efficient and friendly. Highly recommend!"

Danielle S on September 2022


Avatar for Costa Construction & Son LLC

Costa Construction & Son LLC

5.00(
6
)

Costa Construction & Son LLC

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Costa Construction & Son, L.L.C., has over 20 years experience in the construction industry. Costa Construction & Son builds quality custom decks, wine cellars, wall units, cabinetry, dormers, kitchens, bathrooms and finished basements. Our goal for each and every customer: An accurate price quote followed by high-quality workmanship and service and on-time completion that eases customer concerns about home construction projects.

Costa Construction & Son, L.L.C., has over 20 years experience in the construction industry. Costa Construction & Son builds quality custom decks, wine cellars, wall units, cabinetry, dormers, kitchens, bathrooms and finished basements. Our goal for each and every customer: An accurate price quote followed by high-quality workmanship and service and on-time completion that eases customer concerns about home construction projects.

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Concrete Leveling questions, answered by experts

You should water new concrete by spraying it five to 10 times per day for the first seven days. This process of moist curing allows the concrete to become as strong as possible to prevent cracks and weak concrete. Moist-cured concrete is 50% stronger than concrete that was not sprayed with water during the first week. The only exception is if you pour concrete in the winter. Then, spraying with water is not recommended.

Unfortunately, concrete cracks happen, so there’s no surefire way to avoid them long-term. To slow down the cracking, apply a sealant every two to three years and use sand rather than salt to melt snow or ice. Using salt speeds up the freeze-thaw cycle, which may increase the likelihood of cracking. Additionally, keep vehicles and heavy machinery off of your concrete, as the weight can lead to more cracking.

Whether or not you need reinforcements for your concrete slab depends on the thickness, what you’ll use the slab for, and the climate and soil conditions in your area. Adding reinforcements increases the strength and durability of your concrete slab, so it’s ideal for load-bearing slabs like driveways and home foundations. It can also help reduce the risk of cracking in extreme climates and areas that see excessive soil movement. Speak with your professional to determine if your project requires reinforcement.

Concrete is the most popular garage flooring option because it’s durable and can stand up to the weight of vehicles. If you plan on using your garage to park your car or store heavy items, concrete is a solid option. However, if you want to convert your garage to a living space, you can choose any number of flooring options to go over the concrete foundation, including wood, tile, and even carpeting.

Placing either a layer of mixed-size gravel or a paver base under your crushed concrete driveway is a good idea. The smaller pieces will compress and prevent the larger pieces of concrete from driving into the soil below, helping to avoid sinking over time under the weight of vehicles. For added protection from sinking and weeks, you can also install a heavy-duty weed liner beneath the gravel or paver base. Just be sure to use a permeable material to avoid drainage problems.

The Somerville, NJ homeowners’ guide to concrete leveling services

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