Damp basement walls, flaking paint, and a gritty white film on the concrete usually indicate that groundwater is seeping through your foundation from the outside. Piedmont Pressure Seal offers exterior waterproofing in Winston-Salem, NC, and beyond, sealing your foundation from the soil side so that groundwater meets a tough barrier rather than bare concrete. We'll show you what's happening around your home and help you pick an approach that fits your budget, and nobody on our team will push you into anything.
Based in Winston-Salem, NC, Piedmont Pressure Seal is a waterproofing contractor that has protected homes across the Piedmont Triad since 1989. Our exterior waterproofing work includes excavation, installation of a waterproof membrane, drainage along the footing, and long-term protection of the foundation. We also install Delta®-MS membranes from Dörken Systems Inc. and apply GMX products for added moisture protection.
Concrete looks solid, but it's naturally porous, and block walls are full of hollow cores that can fill with water like tiny reservoirs. When groundwater presses in, it shows up inside as damp patches, stale air, and puddles along the base of the walls.
Every foundation sits in a pocket of backfilled soil that's looser than the undisturbed ground around it. Rainwater collects in that loose soil like water in a bathtub, and the surrounding dense clay keeps it from draining away. That trapped water builds hydrostatic pressure, forcing moisture through cracks, joints, and porous concrete.
The most reliable way to waterproof exterior foundation walls is to dig down, clean them up, and rebuild their defenses layer by layer. Our crew uncovers the wall, repairs cracks, applies a GMX coating, and covers everything with a dimpled membrane before adding drainage at the base and backfilling with care. Each layer handles a different job, so the system blocks water, redirects it, and carries it away.
When the job's done, groundwater slides down the membrane and into the drain rather than seeping through your walls. Proper exterior foundation waterproofing keeps your basement dry storm after storm and shields the concrete itself from moisture damage, helping your foundation last longer.
Our exterior waterproofing process has several moving parts, each playing a role from the first shovelful of dirt to the final layer of topsoil.
Solid foundation waterproofing starts with a clean, sound surface. We scrub, inspect, and patch each wall before coating it with GMX products. That base layer gives the membrane a smooth, watertight surface to sit against.
Delta®-MS is a tough, dimpled sheet that creates an air gap between the soil and your wall. Water that reaches it drains straight down to the footing rather than pressing against the concrete, making it an excellent foundation waterproofing membrane for Triad homes. Our installations of it come with a lifetime warranty, adding another layer of protection.
Before any digging begins, we handle the permit paperwork and arrange utility locates to keep the project safe and legal. Next comes the excavation, which exposes the walls from ground level down to their bases. Once the waterproofing is in place, we backfill in stages and put your yard back together.
Water needs an exit once it reaches the bottom of the wall. We lay a perforated drain pipe in gravel along the footing, and this exterior drainage carries groundwater to a downhill outlet or a sump system. Without that drain, even the best membrane would have water sitting against it.
Groundwater is only one way moisture enters, so we also check window wells, pipe penetrations, and the grading around your home. Closing those weak spots and adjusting how surface water flows keep the whole system working as designed. A quick look at your gutters during our visit can reveal easy wins, too.
Beyond making basements damp, moisture slowly weakens concrete, rusts steel reinforcement, and widens cracks. By sealing the exterior, we shield the structure itself from that gradual damage. Protecting the foundation now helps your home hold its value for years.
When water starts entering your basement, we can help identify the source and address the problem with a practical solution. Our basement waterproofing services include interior and exterior waterproofing, leak and seepage solutions, sump pump options, and moisture control designed to help keep your basement protected over the long term.
A damp crawl space can affect moisture levels throughout your home, which is why we focus on controlling the conditions beneath it. With crawl space encapsulation, we install vapor barriers and address moisture and humidity while helping prevent mold, limit pest activity, and support better indoor air quality.
Cracks, settlement, and water intrusion can all indicate problems that warrant a closer look. We provide foundation repair that addresses structural concerns, settlement-related issues, and water intrusion around the foundation while working toward long-term stabilization.
Managing water around your property starts with giving it somewhere appropriate to go. Our drainage installation services include French drains, exterior drainage systems, downspout drainage, and other water diversion solutions to help manage runoff and improve yard drainage.
Slow or clogged drains can become a recurring headache when the underlying drainage issue goes unaddressed. We provide drain cleaning for residential properties, including drain line clearing, clogged and slow-draining systems, and preventive maintenance to help keep water moving properly.
For basement moisture that needs to be managed from the inside, we can install systems that collect and move water away from the living space. Our interior waterproofing and sump pumps include interior drainage systems, basement waterproofing, sump pump installation or replacement, backup systems, and basement water removal.
A foundation crack can allow water into your basement and may also signal movement that needs attention. We provide foundation crack repair for basement walls and concrete foundations, including crack sealing, wall repairs, interior and exterior solutions, and repairs involving bowing walls.
Not every drainage problem requires a large-scale installation. Smaller improvements can make a meaningful difference around your property. We handle small drainage projects, including downspout and surface drainage, water runoff solutions, property water diversion, and yard water management.
Keeping moisture under control often requires looking at how water enters, moves through, and collects around your home. Our water and moisture management services address water intrusion, basement and crawl space moisture, humidity, moisture prevention, and mold prevention.
Here's what homeowners get when they hire our team.
We've been digging around Winston-Salem foundations since 1989, and that hands-on history shapes every recommendation we make.
Thanks to our veterans' discount, you'll save 10% if you've worn the uniform.
GMX coatings and the DELTA® line from Dörken Systems Inc. anchor our exterior systems.
The Delta®-MS Dry Foundation Guarantee comes with each Delta®-MS system we install, and we maintain memberships with the National Association of Home Builders and the National Federation of Independent Business.
Tropical storms that move inland from the coast can dump several inches of rain on the Triad in a short time, soaking the soil around your foundation. That sudden surge of groundwater tests every weak spot in a home's defenses. A properly installed exterior waterproofing membrane, paired with good drainage, gives your basement its best shot at staying dry during storms.
A quality exterior waterproofing system can protect your foundation for decades, and many membranes carry long-term or lifetime manufacturer warranties. Its lifespan hinges on the materials, how carefully the crew prepares the walls, and whether the drainage stays clear. Basic dampproofing coatings tend to wear out much sooner.
For homes with recurring basement leaks, exterior foundation waterproofing is often the best long-term investment since it stops water at the source. The excavation makes it more expensive up front than interior options, but the payoff is a foundation protected from moisture damage. If you plan to finish your basement someday, that added protection is especially valuable.
The process starts with excavating soil down to the footing to expose the foundation walls. Crews then clean and repair the walls, apply a waterproofing membrane, and install drainage at the base to carry water away. Finally, they backfill the soil and restore the yard.
Damp proofing uses a thin coating that slows moisture from soaking through foundation walls, and builders often apply it during new construction because building codes require it. Waterproofing goes further, with a thicker membrane that blocks liquid water under pressure. In North Carolina's wet climate, homes with basements generally need true waterproofing to stay dry.
FAQs reviewed by Justin Gornto, owner of Piedmont Pressure Seal, a certified and experienced waterproofing service in Winston-Salem, NC.
Contact Piedmont Pressure Seal for a consultation, and let's give your foundation the outside protection it's been missing. A drier basement starts on the other side of the wall.
Business Name: Piedmont Pressure Seal
Address: Winston-Salem, NC, 27104
Phone: 336-778-0094
Business Hours:
Mon - Fri: 7:30 AM to 5:00 PM
Sat-Sun: Closed
Emergency Services Are Available Upon Request
10% Veterans Discount
Lifetime Warranty On Cosella Dorken Systems
