Every square foot of bare dirt beneath your house releases moisture around the clock, and most of it drifts straight up into your floor joists. Crawl space vapor barrier installation from Piedmont Pressure Seal seals that ground off across Winston-Salem, NC, and nearby towns such as Oak Ridge, Jamestown, and Bermuda Run. You'll hear exactly what we find down there and what it takes to fix, with no rush toward a decision.
A locally owned waterproofing contractor working out of Winston-Salem, NC, Piedmont Pressure Seal LLC has served Piedmont Triad homeowners since 1989. Its crawl space vapor barrier installation covers site cleanout, liner selection, ground and pier coverage, seam taping, and wall attachment, along with the drainage corrections a barrier needs to perform. The company holds memberships with the NAHB, the NFIB, and the Better Business Bureau, and emergency service is available upon request.
Homeowners rarely connect a springy hallway floor, a stubborn musty odor, or a climbing power bill to the space beneath the house. Down there, joists darken, insulation droops between the beams, and fasteners start to rust.
Soil holds water like a sponge, and that moisture evaporates upward day and night. Research conducted in North Carolina has measured the equivalent of several gallons a day rising from the ground in an average crawl space. Vents meant to carry it away pull in humid summer air instead, which condenses on cool pipes and framing and adds to the load.
A vapor barrier blocks that evaporation at the source. Our crew clears out debris and ruined insulation, corrects standing water or drainage issues, then rolls a heavy reinforced liner across the soil, runs it up the piers and walls, and seals every seam and edge. Mechanical fasteners and tape rated for below-grade use hold the liner in place so it doesn't peel away after the first service visit.
Once the ground is covered, the wood above it dries out and stays that way. Floors feel warmer underfoot, the musty smell in the hallway fades, and your HVAC system stops fighting damp air it was never designed to handle.
A liner does more than cover dirt, and these are the results homeowners notice first.
Hardware store plastic runs 6 mil and tears the first time somebody crawls across it. Reinforced liners in the 12 to 20 mil range hold up to plumbers, pest inspectors, and years of foot traffic. Choosing the right thickness up front keeps you from paying for the same job twice.
A barrier is only as good as its overlaps, so we lap each section generously and tape it with adhesive made for below-grade conditions. The liner runs up the foundation walls and around every pier, then gets mechanically fastened in place. Loose edges are exactly why plenty of older barriers quit working years ago.
Joists, sills, and subflooring absorb whatever moisture the air carries, and sustained dampness invites rot along with wood-boring insects. Cutting off ground evaporation keeps those members in the dry range where fungus can't establish. Structural repairs cost many times what the barrier preventing them does.
Plumbers, electricians, and HVAC technicians all end up under your house eventually. A sealed, light-colored liner gives them a dry surface to work on and makes leaks or pest activity easy to spot. Customers tell us the difference is obvious the first time somebody goes down there.
The liner is the piece everything else builds on, whether you add crawl space dehumidification later or move toward full encapsulation. Getting it right now means the next step is simple rather than a do-over. Expect a clear explanation of where your home stands and what, if anything, comes next.
A liner often arrives alongside one of these services, depending on what your crawl space is up against.
Full crawl space encapsulation seals the ground, walls, and vents together and adds humidity control to keep the entire space conditioned. Homeowners after the most complete protection usually land here.
With the soil sealed off, crawl space dehumidification manages the moisture already in the air from vents, plumbing, and outdoor humidity. The two work as a pair in most Triad homes.
Broader crawl space moisture control looks at drainage, grading, and standing water along with the liner itself. That's the right starting point when water pools under the house after storms.
Here's the difference between our team and whoever else answers the phone.
More than three decades under Triad homes has shown us how differently a 1940s bungalow and a 1990s subdivision handle ground moisture. That background guides the liner and layout we recommend. The same approach continues under Justin Gornto, who bought the company after years of working in it.
Some crawl spaces need a complete system, while others need a liner and a drainage tweak. You'll hear which camp yours falls into, even when the smaller answer is the right one. Commission-driven pitches have never been part of how we operate.
Old torn plastic, soggy insulation, and construction debris all come out before the new liner goes down. Everything leaves with our truck rather than sitting in a pile beside your driveway. A clean space also lets us spot problems the clutter was hiding.
Anyone who has served receives 10% off their project total, and it applies to crawl space work of any size.
Materials for the waterproofing side of our projects come from GMX and Dörken Systems Inc., and Delta®-MS installations carry a lifetime warranty along with the Delta®-MS Dry Foundation Guarantee. Permits get pulled by our office whenever a job requires them.
Laying a liner by itself generally doesn't require one, while related work such as electrical for a dehumidifier, drainage tie-ins, or structural repairs often does. Local rules on that come from the city and county inspections office. Each project gets checked, and we file whatever it calls for.
For the best results, yes. Running the liner up the foundation walls and sealing it there blocks moisture moving through block and keeps the barrier from shifting underfoot. Ground-only coverage helps some, though it leaves the walls able to release moisture into the space.
A quality reinforced liner commonly lasts 15 to 20 years or more when someone installs and maintains it properly. Tears from service visits are the usual reason one fails early. An annual look under the house catches damage while a patch still fixes it.
North Carolina's residential code sets a minimum thickness for ground cover, and most contractors here install something considerably heavier for durability. Something in the 12 to 20 mil range stands up to traffic far better than thin sheeting. Your local inspections office can confirm the current code minimum.
Vapor barriers cover the ground and often the piers, blocking moisture that rises from the soil. Encapsulation seals the ground, walls, and vents into one conditioned space, usually with a dehumidifier included. Barriers cost less upfront, while encapsulation delivers the most complete protection.
FAQs Reviewed By Justin Gornto, Owner of Piedmont Pressure Seal, a certified crawl space and waterproofing contractor based in Winston-Salem, NC.
Book a consultation or estimate with Piedmont Pressure Seal, and we'll show you what's happening under your floors. A properly installed liner ranks among the best investments an older Triad home can get.
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
