Basement leaks can be frustrating, especially when they seem to appear from nowhere. One type of leak that often goes unnoticed until damage occurs is a fingerspace leak. These leaks happen at the end of a foundation wall, where water sneaks in behind a brick or stone veneer. At Schmitt Waterproofing, we’ve helped countless homeowners address this problem through a solution called the fingerspace drain.
This article will explain what a fingerspace leak is, how a drain works, signs you might need one, and how to properly care for your drain after installation.
Key Takeaways
- A fingerspace leak happens when water gets trapped in the small gap between a foundation wall and a brick or stone veneer.
- A fingerspace drain provides a controlled exit for that trapped water so it can safely flow away from your home.
- Signs you may need a drain include moisture or staining at the base of brick walls, leaks in the basement near the end of a foundation wall, or unexplained water entry after rain.
- Regular inspection and proper drainage maintenance are important after installation.
- Choosing an experienced waterproofing professional ensures the repair is done right the first time.
What Is a Fingerspace Leak?
A fingerspace leak occurs in the narrow cavity (often called a “finger space”) between the foundation wall and the brick or stone veneer. When water collects in this gap, it eventually travels to the end of the wall, where it seeps into the basement.
Unlike widespread drainage systems, a fingerspace solution is usually a targeted repair. We locate the exact entry point and create a controlled path for the water to exit instead of seeping into your basement.
How a Fingerspace Drain Works

The installation process is straightforward but requires precision:
- Locate the leak – We measure from the inside of your basement to the outside to find the exact entry point.
- Excavation – A small trench is dug along the outside of the wall.
- Open the brick veneer – A section of brick is removed so the gap between the veneer and the foundation can be sealed.
- Barrier installation – A barrier is created to stop water from traveling past the end of the foundation wall.
- Drain installation – A pipe is set through the wall, giving water a controlled path to flow out and away from your home.
In most cases, only one drain is needed. When exterior draining isn’t possible due to slope or property layout, interior options such as sump pumps may be used to capture and redirect the water. Schmitt Waterproofing understands the importance of proper drainage and how fingerspace drains can help.
Signs You May Need a Fingerspace Drain
- Water pooling at the base of the brick or stone veneer after rain
- Moisture, dampness, or staining near the inside end of a foundation wall
- Repeated basement leaks with no clear source
- Efflorescence (white chalky buildup) on masonry walls
- Musty odors or signs of mold growth in the basement
If you notice these issues, it’s time to have your home inspected.
Caring for Your Fingerspace Drain

Once installed, a fingerspace drain requires minimal maintenance, but care is still important:
- Keep the exit point clear – Ensure soil, mulch, or debris doesn’t block the drain pipe.
- Inspect after storms – After heavy rain, check that water is flowing away from the home.
- Maintain yard grading – Make sure the surrounding soil slopes away from the house to prevent backup.
- Annual inspection – Have a waterproofing professional check the drain each year to confirm it’s functioning correctly.
Benefits of Installing a Fingerspace Drain
- Prevents basement leaks at the vulnerable end of foundation walls
- Protects indoor air quality by reducing the risk of mold growth
- Preserves structural integrity by keeping water away from your foundation
- Cost-effective solution compared to larger waterproofing systems
- Custom fit – Designed specifically for your home’s drainage needs
Choosing the Right Professional
Because a fingerspace drain involves opening brick or stone veneer and sealing hidden gaps, it’s not a project for general contractors or DIY repair. Look for a waterproofing specialist with:
- Experience in diagnosing fingerspace leaks
- A clear process for both exterior and interior solutions
- References or reviews from past clients
- A warranty or guarantee on their work
At Schmitt Waterproofing, we’ve built a reputation on doing the job right the first time and tailoring solutions to each home.
Final Thoughts
A fingerspace leak may seem minor at first, but over time, it can lead to major water damage, structural issues, and indoor air quality problems. Installing a fingerspace drain is a proven solution that gives trapped water a safe exit path.
If you’re noticing signs of moisture near your foundation walls or basement, Schmitt Waterproofing is here to help. We’ll evaluate your home, explain your options, and recommend the right solution to keep your basement dry.
Frequently Asked Questions
Is a fingerspace drain a full waterproofing system?
No. It’s a targeted repair that addresses water trapped in the gap behind veneer walls. Sometimes additional drainage or a sump pump may be required, depending on your property.
Will multiple drains be needed?
Typically, no. Most homes only need one drain installed at the problem area.
Can this repair be done from inside the basement?
In some cases, yes. If the exterior isn’t an option due to slope or space, we may install an interior system or sump pump.
How long does the installation take?
Most fingerspace drain installations are completed in one to two days.
Will the repair affect the look of my home’s brick or stone veneer?
We carefully open and replace a small section of veneer. When completed, the repair is discreet and blends in with the rest of the wall.