Exterior Waterproofing Solutions

Central NJ

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Waterproof Your Home's Exterior


When it comes to protecting your home from water damage, GSL Contracting LLC is the name you can trust. With over 25 years of experience, we've been keeping central NJ homes dry and secure. Our team of expert masonry contractors specializes in exterior waterproofing solutions that stand the test of time. We're not just another contractor – we're your partners in creating a resilient, water-resistant home that'll weather any storm.

We're proud to be a family-owned and operated business that's deeply rooted in our local community. We offer a one-stop shop for all your outdoor solutions, from custom designs to comprehensive waterproofing services. Our fully licensed and insured team is committed to delivering exceptional results, backed by available warranties for your peace of mind. Call us today.

Why Choose GSL


Available 24/7

Warranties Available

Licensed and Insured

Same-Day Free Project Estimates

Over 25 Years of Experience

Family-Owned and Operated

Basement Waterproofing

A strong, waterproof basement foundation is crucial for the structural integrity of your home. Our seasoned professionals specialize in reinforcing and waterproofing basement foundations to prevent water infiltration and structural damage.

Exterior Drainage

Proper exterior drainage is essential for directing water away from your home's foundation. Our team designs and installs efficient drainage systems that effectively channel water away from your property.

Exterior French Drains

French drains are an excellent solution for managing excess water around your property. Our skilled contractors can install exterior French drains that efficiently collect and redirect groundwater away from your home's foundation.

Frequently Asked Questions


1. What does exterior waterproofing mean, and why is it important for homeowners?

Exterior waterproofing is a method of protecting the outside of your home’s foundation so water cannot penetrate or weaken the structure over time. Homes experience pressure from surrounding soil, especially during periods of heavy rain or seasonal thawing. When water builds up around the foundation, it pushes against the walls and can eventually force its way inside through cracks or masonry joints. This is where exterior waterproofing in Old Bridge, NJ becomes important for homeowners who want to prevent a wet basement, mildew odors, or foundational deterioration. By forming a strong barrier and improving exterior drainage, this service helps protect your living spaces, stored belongings, and overall property value for years to come. It also supports the long-term health of your home by reducing risk of moisture-driven pests and improving indoor comfort.


2. What are the signs that my home may need exterior waterproofing?

Many homeowners first notice symptoms like damp or musty smells in the basement, water stains along the lower walls, and white salt deposits followed by chipping or peeling paint. These are early warning signs that moisture has already begun seeping inside. You may also find small puddles on the basement floor following storms or observe that walls feel cold and moist to the touch. Cracks—whether hairline or wider—on the inside or outside of the foundation can also indicate water pressure problems. Yard drainage may be a concern if water consistently pools near the home after rainfall. These issues are clear indicators that exterior waterproofing in Old Bridge, NJ could help restore a dry and healthy foundation before more serious structural or mold-related damage develops. Addressing these clues early helps prevent repairs from becoming overwhelming or expensive.


3. How does the exterior waterproofing process work?

Professionals start by assessing the home’s existing waterproofing condition and drainage performance. Once the affected areas are identified, excavation takes place around the foundation to expose the wall from the outside. This allows technicians to clean and repair damaged surfaces before applying premium waterproofing materials designed to repel moisture under long-term soil pressure. A drainage system such as a French drain is usually installed at the base of the foundation to channel groundwater away. Then everything is backfilled and the grading is adjusted so rainwater flows outward rather than toward the house. When exterior waterproofing in Old Bridge, NJ is performed using high-quality materials and proper installation methods, the result is a long-lasting moisture defense that stops water before it reaches the interior. This detailed approach ensures complete coverage rather than relying on patchwork fixes.


4. How does exterior waterproofing differ from interior waterproofing?

Exterior waterproofing focuses on stopping water before it contacts the structure, while interior waterproofing handles moisture only after it enters the basement. Interior solutions like sump pumps, vapor barriers, and interior drains can be helpful in managing water but do not prevent outside forces from damaging the foundation. Exterior solutions address the root cause by reducing water pressure and sealing the structure from the outside. Even though exterior solutions require excavation and more labor, they often provide the more complete fix. This is why many homeowners choose exterior waterproofing in Old Bridge, NJ as a long-term investment to ensure their foundation remains strong and stable without recurring moisture problems. Homeowners who plan renovations or finishing their basements often choose exterior solutions first.


5. What does exterior waterproofing cost, and how long does it take?

The total cost varies because each home has different structural needs, landscaping conditions, and drainage challenges. Larger homes with deeper foundations usually require more excavation, while smaller homes on flat lots can be completed more efficiently. If the soil around the home has shifted or if there are major cracks that need repair, that can influence the final price as well. Project timelines can range from several days to a week or more depending on weather and access conditions. Even though exterior waterproofing may require a more significant upfront investment, homeowners who select exterior waterproofing in Old Bridge, NJ typically save money over time since they avoid recurring repairs, mold remediation, and structural restoration. Good planning when scheduling the work can also minimize household disruptions.


6. How long does exterior waterproofing last, and what kind of maintenance is needed?

Once installed, a well-designed waterproofing system can last decades with minimal upkeep. Good drainage and proper soil grading are essential to long-term performance. Gutters and downspouts should remain clear and positioned to direct water away from the home. Trees and large shrubs should be planted a safe distance away from the foundation to prevent root interference with the drainage system. It is a good practice to inspect visible exterior areas annually for settlement, erosion, or changes in water flow patterns on the property. Homeowners who invest in a professional system like exterior waterproofing in Old Bridge, NJ often find their foundation remains reliably protected for a lifetime when paired with simple routine maintenance. Proactive care can significantly extend the life of every component installed.


7. Why choose a local expert for exterior waterproofing services?

Local specialists understand the climate, soil movement patterns, and common structural challenges specific to the area they serve. This knowledge ensures waterproofing solutions that are truly customized rather than one-size-fits-all. Hiring a trusted local team means easier communication, quicker response times, and a company that stands behind its work because its reputation is bound to the community it serves. Homeowners who want peace of mind appreciate choosing specialists experienced with exterior waterproofing in Old Bridge, NJ, since they know the right materials, construction methods, and drainage improvements to ensure lasting protection against moisture. By trusting a knowledgeable local contractor, you gain confidence that your home will remain strong through seasonal changes and future weather conditions.

Here's what our satisfied customers are saying...

At GSL Contracting LLC, we take pride in providing exceptional waterproofing services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of GSL Contracting LLC and let others know what you think.