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Basement Waterproofing and Foundation Repair in Wilmington, DE

At the northeast corner of Delaware, Wilmington has gravelly, sandy soils that are easily eroded by rain and snow. When soil is weakened, it spells disaster for your foundation; but BQ Basements & Concrete has industry-leading solutions that keep your home protected.

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Cherry Hill, NJ Local Office

BQ Basements & Concrete

535 Route 38 East, 149E
Cherry Hill, NJ 08002

Hours of Operation

Monday – Friday: 7 am – 9 pm
Saturday: 8 am – 6 pm
Sunday: 10 am – 7 pm


BQ Basements and Concrete specializes in helping homeowners with their foundation repair, basement waterproofing, and concrete needs. Our top priority is providing trusted solutions and personalized, timely service in the greater Philadelphia area.


Schedule Free Inspection

One of our contact center representatives will reach out to you to determine your problem and set the best time for one of our certified field inspectors to visit your home.

Consult with our certified inspector

Our certified field inspector will visit your home to observe the problems in your home and inspect other areas of your home that may have been impacted.

Installation of customized solutions

Our professional production crew installs patented, American-made solutions in each home with care and strives to leave the area better than we found it.

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Why Homeowners Choose BQ Basements & Waterproofing

When a home’s foundation, basement, crawl space, or concrete gets damaged, homeowners want service they can trust. BQ Basements & Concrete, a Groundworks Company, has been providing that trustworthy service to Wilmington homeowners since 1997. With a long list of satisfied customers and thousands of positive online reviews, our reputation has earned us a favorable rating with the Better Business Bureau of Southeastern Pennsylvania. 

BQ uses industry-leading solutions to repair any foundation or concrete issues your home might be facing. No job is too big for us, and we’ll never shy away from a challenge. To experience the quality service our company has provided for over 24 years, contact us today and schedule a free inspection.

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Basement Waterproofing in Wilmington 

Due to their underground location, basements are at higher risk for moisture damage. Wilmington’s gravelly, sandy loam soils don’t help the situation. The area averages 45 inches of rain and 13 inches of snow every year, both of which erode the soil in your yard and allow water to build below the ground. Water pressure rises and pushes against basement walls until they crack and allow water to leak inside. Plumbing leaks can also contribute to moisture in your basement. No matter what, water damage below your home affects your health and your home’s structure. BQ keeps your basement dry with long-term solutions like dehumidifiers, sump pumps, and interior drainage

Foundation Repair in Wilmington

Most yards in Wilmington consist of gravelly, sandy soils that don’t hold up well against rain or snow. Over time, precipitation causes these soils to break down and become too weak to support your heavy foundation. Unfortunately, this has serious side effects on your home such as sinking or settling, stuck doors and windows, or bowing walls. Keeping the structure of your home intact is at the heart of BQ’s foundation solutions. We install pier systems, wall anchors, and steel I-beams that provide unwavering strength for your home. Problematic soil won’t be an issue for you again.  

Concrete Lifting & Leveling in Wilmington

Since concrete is not a flexible material, it requires sturdy soil to maintain its shape. However, Wilmington has gravelly, sandy soils that are easily eroded by the area’s above-average rainfall. When the soil becomes weak, it can’t support concrete properly, so you are left with cracked and uneven sections of concrete on your property. Mudjacking was a popular method for concrete lifting in the past, but the process was messy, time-consuming, and didn’t guarantee success. That’s why BQ Basements & Concrete uses PolyRenewal™, a polyurethane injection system that cures in just 15 minutes. It’s strong enough to lift and support your damaged driveway, pool deck, sidewalk, or interior slab and protects the soil from erosion with its waterproof qualities.  

Crawl Space Repair & Encapsulation in Wilmington

Crawl spaces are built with inherent flaws that make them susceptible to moisture damage. These include open vents and dirt floors, both of which allow moisture to get into your crawl space. Rain and snow are absorbed by dirt floors in your crawl space. Eventually, the water evaporates and causes humidity levels to rise below your home. Open vents allow in even more humid air, further increasing humidity levels. This leads to mold, wood rot, and potential flooding right under your floor. But with world-class waterproofing solutions, BQ keeps your crawl space protected with thermal insulation, sump pumps, and full encapsulation.  

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Moisture can get in your Philadelphia basement in a variety of ways. Leaks are probably the most obvious way, though even these can vary in how they form. Water from outside your home might start to press up against your basement walls, leaking through if the pressure becomes dense enough. These leaks can eventually expand wider and cause your basement to flood if you simply ignore them for too long. Leaks can also spring from other sources as well. If your plumbing breaks, for instance, then the water and sewage from those pipes can build up behind your walls and eventually leak into your basement as well. You might even notice a musty smell that only seems to linger around your basement because of this.

Any cracks you see around your basement will also allow moisture to seep through. This does not just include any cracks along your walls but from your floor, too. Groundwater can well up and begin to flood your basement at any given time, too, so you should not underestimate even the smaller cracks found along your basement floor. This constant flooding can also bring about other issues such as mold and mildew growth and pest infestations.

Hydrostatic pressure is a serious threat to your entire home. Even though its effects are mostly seen in the basement, it does affect the structure of the entire house. As the basement wall bends inwards due to the pressure of the accumulated groundwater, it begins to crack. The cracks allow the water to seep through the concrete and infiltrate your basement. Flooding is most common in the wall-floor joint, which is where you’ll see most of the water come from. Your basement wall is a part of your home’s foundation. The second a foundation begins to have structural problems; the effects will be felt elsewhere. You might notice your floor begin to sink closer to the wall. Any columns that relied on the walls to support the ground floor will begin to fail, which means that the walls above will also experience issues with cracking, bending, and breaking.

The soil immediately surrounding your foundation is a lot looser than the soil farther away. This is because when your home was built, a bowl-like hole was excavated, and the foundation was built in this space. After the foundation was built, the gaps were backfilled with the soil that was previously removed. The problem with this is that the soil used as backfill is a lot more porous that the densely packed soil the foundation sits on. This porous soil is able to absorb a lot of water, making it a dangerous threat to your foundation. The clay bowl effect is something many homeowners in Dover have to worry about. This problem is incredibly persistent in areas where the soil is primarily made of clay. These soils already have a high expansion capacity, but in a state like Delaware, the soil is capable of getting saturated quite easily. When it rains, not only does the rainwater directly affect the soil, it also raises the water table. Because of the soil, the weather, and the clay bowl effect, foundations in Dover are in constant need of repairs.

Any and all concrete cracks can pose a threat to the surrounding concrete as well as to your foundation given enough time. However, not every homeowner will have the time to treat every crack or sign of damage they might come across around their home. This is where knowing which cracks can be ignored for a short period of time and which cracks must be treated as soon as possible. Any cracks that measure less than 1/8 inch wide are known as hairline cracks and will not pose any immediate threat to the surrounding concrete, nor will they spread down to the foundation right away. The same can be said for any cracks that measure anywhere between 1/8 and 1/4 inches wide.

Of course, these cracks can also expand at any time, so it is important that you do not leave these cracks alone for too long. Any cracks that measure wider than 1/4 inch must be repaired as soon as possible. Not only can they spread damage out to the surrounding slabs, but they can easily creep down to the foundation, too. You need a concrete lifting solution that will prevent this damage from spreading as well as protect your concrete from being damaged again in the future.

The SettleStop PolyRenewal™ injection foam repair solution will do just that and more. It can stabilize both the supporting soil below and the concrete slabs themselves, filling in any cracks and other damage along the way. The foam is made up of eco-friendly materials as well. If it mixes with water, then it will not ruin your lawn or landscaping. It is a nondisruptive repair solution that will not require any heavy equipment or loud construction to install and will cure in minutes!

It is easy for moisture to negatively impact your foundation, more so than the average Philadelphia homeowner might think. For instance, all the water from heavy rain and melted snow will all absorb into the surrounding soil. However, the soil is only capable of holding so much water weight before it either washes away or grows extremely heavy. This then can create an immense pressure against your foundation, causing it to shift away from this weight or even crack altogether.

This phenomenon is commonly referred to as hydrostatic pressure. Hydrostatic pressure can also take another form as well. Water can easily become trapped in the concrete foundation’s pores. When winter comes and that trapped water freezes, the expanding ice then can lead to the foundation cracking apart from within.

You will also need to deal with a common construction mistake known as the clay bowl effect creating settling issues as well. Basically, contractors will dig a large hole where they plan to lay down the foundation (and either a basement or crawl space) when they first build a home. Once these components are installed, there is typically a little space left around the perimeter that the contractors will then backfill in with the soil they dug up. Of course, it is now much looser than it once was, and Philadelphia’s sandy-loam soil is already quite loose. The soil creates a bowl of sorts around the foundation that can be easily washed out during a huge storm or when the snow begins to melt in the spring. Without this crucial support, your foundation will start to shift or settle into the remaining soil and may even crack apart. BQ Basements & Concrete can waterproof your foundation to ensure that this does not happen.

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