- Published: March 31, 2025
Nico Barbieri
Nico was the first person hired for the position of estimator and project manager for our growing company. He has over 25 years of experience in the water proofing industry. More About Nico
Basement walkouts, stairwells, and exterior entrances offer convenient access to your lower level—but they’re also one of the most vulnerable points for water intrusion. Because these areas are typically located below grade, they’re naturally exposed to rain, melting snow, and groundwater pressure.
Without proper waterproofing, water can easily seep into your basement through doors, stairwell drains, or foundation cracks, leading to mold, damage, and costly repairs.
Here’s how to effectively waterproof your basement stairs and exterior entrances to keep your home dry and protected year-round.
1. Ensure Proper Drainage in the Stairwell
The stairwell area leading to a basement entrance should include a dedicated drain at the base to carry water away. If this drain is clogged or poorly designed, water can collect quickly during storms.
What to do:
- Inspect and clean the drain regularly
- Install a trench drain or surface grate if one doesn’t exist
- Ensure the drain connects to your weeping tile or sump pump system
2. Apply Waterproof Membrane to Foundation Walls
The concrete floors and walls surrounding your stairwell entrance can absorb moisture over time. A waterproof membrane applied to the exterior surface can help prevent seepage through these walls.
Options include:
- Liquid rubber coatings
- Sheet membranes
- Dimpled drainage boards for improved water flow
3. Install a Canopy or Awning
Adding an overhead covering or canopy above your basement entrance can significantly reduce the amount of rain and snow that collects in the stairwell.
Benefits:
- Redirects water away from door and stairs
- Prevents icy buildup in winter
- Enhances curb appeal and safety
4. Replace or Seal the Basement Door
Your basement entry door should be weather-resistant and installed with a tight seal around all edges.
Look for:
- Exterior-rated doors with a watertight threshold
- Proper caulking around the frame
- A raised sill to prevent pooling at the base
If the door is old or warped, consider upgrading to a modern, waterproof model.
5. Grade the Surrounding Soil Away from the Entrance
The ground around your basement entrance should slope away from the house, not toward it. Improper grading can lead to water running directly into the stairwell area.
Solution:
- Regrade the soil or install a swale to redirect water
- Consider adding a small retaining wall or trench along the sides for added protection
6. Consider Exterior Stairwell Enclosures
If your basement entrance is especially prone to flooding, enclosing the entire stairwell with a custom stairwell enclosure or hatch cover can provide an added level of protection.
This is especially useful in older homes or properties located on a slope.
Trust Aquatech Waterproofing for Lasting Protection
At Aquatech Waterproofing, we specialize in protecting every part of your home from water intrusion—including basement stairs and exterior entrances.
We offer:
- Drain installation and repair
- Exterior waterproofing systems
- Foundation wall sealing
- Walkout entrance drainage design
- Basement Waterproofing
Thanks for reading, and stay tuned for more.
