A wet spot on a basement wall almost always means water has found a path through your foundation. Basement waterproofing solves that problem in one of three ways, and the right method depends on the size of the crack, the condition of your walls, and how much water is getting in. Here is what our process looks like, from the first inspection to the final grade, along with the questions we settle before any work begins.
How We Find the Source of the Water
Every project starts with an inspection. First, we trace the water back to its entry point, because the entry point determines the repair.
Where Water Typically Enters
In most homes, the leak traces back to one of these places:
- Hairline or structural cracks in poured concrete walls
- The joint where the wall meets the footer
- Block walls that have bowed under soil pressure
- Saturated soil along the exterior perimeter
What We Confirm Before We Quote
Next, we check whether the cracks are dry, whether the walls have moved, and where the water collects during a storm. That answer sets the method and the price, and we explain both before work starts.
Pro Tip: Photograph your basement walls during a heavy rain. Knowing exactly where and when the water appears helps us narrow the cause on the first visit.
The Three Basement Waterproofing Methods We Use
There are three proven ways to waterproof a basement. We choose based on what the inspection shows.
Epoxy Injection for Smaller Cracks
For a small, isolated crack, we use epoxy injection. The crack must be completely dry first, so we schedule this work around the weather. We then inject epoxy directly into the crack, which seals the pathway through the concrete.
Because it requires no excavation, this is the fastest option for a sound wall.
Interior Drain Tile and Sump Pump Systems
When water enters in more than one spot, we install an interior drain tile system. First, we dig a channel trench along the interior perimeter of the foundation walls. Then we direct that trench to a sump pump, which moves the water out and away from the house.
This approach manages water rather than fighting it, so it holds up well over time.
Need expert help with your wet basement? Contact Olson Foundation Repair for a free consultation.
Exterior Excavation and Membrane Waterproofing
We recommend exterior work when water enters along a full section of wall.
Straightening Walls that Have Shifted
We dig the wall out from the outside, around the perimeter of the affected area. If soil pressure has pushed the walls in, we push them back into position before any waterproofing goes on.
Membrane, Drain Tile, and Final Grading
Once the wall sits straight, we wrap the exterior with a waterproofing membrane. Next, we run corrugated drain tile with a filter sock along the footer and route it to the sump pump. Finally, we backfill with gravel and grade the soil so water drains away from the house.
After that, we can still patch and seal cracks on the interior.
Key Takeaway: Interior systems manage water after it reaches the wall. Exterior work stops it before it arrives. Your water volume decides which one fits.
What to Expect from Our Crew
How Long Basement Waterproofing Takes
Epoxy injection often wraps up in a single day. Interior drain tile typically runs one to three days, while exterior excavation takes longer depending on access and wall length.
Cleanup and Communication
We protect your finished spaces, haul away the debris, and walk you through the completed work before we leave.
Stop managing the water and fix the cause. Call Olson Foundation Repair today to schedule your free estimate and get a basement waterproofing plan built for your home.
