Basement Waterproofing St. Louis
Is professional basement waterproofing worth it?
If you’re dealing with a damp or musty basement, you’re not alone—wet basements are a common issue in St. Louis due to our heavy rainfall and unique soil conditions. The area gets about 40 inches of rain each year, and much of the ground is made up of dense clay soil. This clay expands when it’s wet and shrinks during dry spells, which puts constant pressure on your foundation. Over time, that pressure can lead to cracks, water leaks, and even mold growth.
At Jet Foundation Repair, we go beyond surface-level solutions by targeting the root of the problem—whether it’s poor drainage, hydrostatic pressure, or foundation cracks.
We offer custom waterproofing solutions designed for St. Louis homes, including:
Interior drainage systems to redirect water
Sump pump installations to keep water out
Vapor barriers to control moisture and improve air quality
A free and professional assessment can help you decide the best way to protect your home from water damage—and turn a wet, unusable basement into a dry, healthy living space that adds value to your home.
Vapor Barrier Installation
Jet Foundation Repair installs a basement vapor barrier in Festus, MO
Vapor barriers, typically made from durable polyethylene sheets, are applied to the interior walls of the basement. The installation process begins with cleaning and repairing the walls, followed by securely attaching the barrier using adhesives, fasteners, or seam tape to ensure a tight seal.
The barrier directs any water seepage into an interior drainage system, often integrated with sump pumps and dehumidifiers for comprehensive moisture control. Properly installed vapor barriers not only block water vapor, but also inhibit mold growth, reduce humidity, eliminate musty odors, and enhance the basement's overall durability and energy efficiency.
Interior Drainage Installation
Jet Foundation Repair digs a perimeter for an interior drain install
Installing an interior drainage system is a highly effective method for waterproofing basements by addressing water intrusion at its source. The process typically involves digging a shallow trench along the interior perimeter of the basement floor, where a perforated drainage pipe is installed and surrounded by gravel. This pipe collects water seeping through walls or the floor-wall joint and channels it to a sump pit, where a sump pump expels the water away from the foundation.
Advantages of an Interior Drain
Interior drainage systems are typically less disruptive and more cost-effective than exterior solutions, as they avoid excavation and are resistant to clogging. By relieving hydrostatic pressure and capturing water at common entry points, these systems ensure a dry, healthy basement environment, even in finished spaces
Basement Crack Injection
Basement crack injection is one of the most effective and permanent solutions we offer for stopping water intrusion through foundation walls. Using high-quality polyurethane, we seal cracks from the inside to prevent leaks, reinforce the structural integrity of the wall, and keep your basement dry. This process is ideal for poured concrete foundations and is a fast, minimally invasive repair method that doesn't require exterior excavation. Whether you’re dealing with a hairline crack or a more visible opening, crack injection offers a reliable fix that can protect your home for decades.
Exterior Drainage
Exterior drainage systems, such as French drains, play a crucial role in waterproofing basements by preventing water from accumulating around the foundation. These systems involve installing perforated pipes at the footing level of the foundation, surrounded by gravel and often wrapped in a filtration fabric. The pipes collect excess groundwater and channel it away from the home using gravity.
Our basement waterproofing service starts with a review of the home’s exterior drainage and frequently includes our recommendation or a proposal on fixing or improving it.