Coming downstairs and finding water in your basement would throw any homeowner for a loop. A million questions run through your mind, like: how do I fix this? Do I need a new drainage system? How is the water getting in? You may have heard of different waterproofing solutions, like crack injection or drainage systems, but how do you know which one you need?
Choosing the wrong one, or only one when you may need both, has caused homeowners more headaches and money. That’s why seeking a professional inspection can help make sure you’re getting the best repairs for your home and avoid future problems from happening.
Polyurethane crack injection is used on most basement wall cracks. Technicians inject expanding resin under high pressure so it travels all the way through the thick, concrete foundation wall, completely filling the crack (from the exterior all the way to the interior). This method is best for:
Crack injection works best when it’s caught early, before the cracks have grown too wide or the walls have started bowing or tilting. It’s also a more affordable method than installing a full drainage system. But this isn’t an appropriate solution for every situation. For example, it does not address water coming in through the floor-wall joint or water rising up through the slab. That’s where a full interior French drain system shines.
An interior French drain system manages hydrostatic pressure, which is the force of groundwater pushing against and under the foundation. It catches any water that would otherwise enter at the cove joint where the wall meets the floor or rises through the slab.
At StayDry®, we use the HydroFlow French drain system. We cut a trench into the floor and install a perforated pipe and filtration stone; the system directs any water that reaches the foundation into a sump pump basin. The pump then discharges the water safely away from the house. A French drain system is best for:
A French drain system does what crack injection can’t, but the opposite is also true. A drain system does not seal active cracks that are higher up on the wall. The floor will stay dry, but water can still enter through the cracks and create stains, efflorescence, or mold.
| Factor | Polyurethane Crack Injection | Full Interior French Drain System |
|---|---|---|
| Main Purpose | Seals specific cracks all the way through the foundation wall | Manages hydrostatic pressure and redirects water at the floor-wall joint |
| Best For | Localized leaks, vertical/diagonal cracks less than ¼ in wide | Widespread seepage along perimeter of the floor |
| Typical Signs | Water appears in the same spot, efflorescence traces from crack | Water along base of multiple walls, floor gets wet, no obvious entry points |
| What Does it Not Fix | Floor seepage, cove-joint water, or hydrostatic pressure | Active cracks higher up on the wall |
| Disruption Level | Low, usually a few hours, minimal mess | Moderate, involves cutting a trench along the perimeter |
| Cost | Lower, typically $475-$1,200/crack | Higher, typically $3,500-$8,500 (full system investment) |
| When It’s Enough Alone | Problem is clearly limited to one or a few cracks | No active wall cracks, just perimeter/floor water |
| Often Combined With | French drain when both issues exist | Crack injection for any active wall cracks |
When our technicians inspect a property to determine the appropriate solution, they are looking for several factors. Crack injection is the best solution when the problem is clearly localized:
A French drain system if you have:
If you’re experiencing all of these signs, your home may need both solutions to fully protect it. Doing only one repair will only solve part of the problem. An experienced waterproofing company, like StayDry®, can assess your situation and choose the best solutions, rather than defaulting to the same solution for every home.
Our team has been handling waterproofing since 2005, and we start every new project with a free, no-obligation inspection. We look at where the water is actually entering your home, the condition of the foundation, and your existing exterior and interior drainage systems. Then we discuss with you what we found and the best solutions to protect your home; that could include one or several solutions depending on the condition we find your foundation in.
We prioritize your accessibility to quality services. All of our basement waterproofing services come with a lifetime, transferable warranty, and we match competitor quotes on many of our services. We also offer 0% financing options with no hidden fees or penalties. Finding water in your basement is stressful enough; that’s why we work hard to make fixing it as straightforward and accessible as possible. Give us a call today.
The StayDry® team has 100+ years of combined experience with basement waterproofing, foundation repair, crawl space repair, wall repair, and mold control.
Give us a call or fill out the form here and we’ll get in touch to schedule your free inspection.
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