Basement drainage systems in Lexington, KY
When water keeps coming in where the wall meets the floor, an interior drain gives it a path out before it spreads.
A basement drainage system is a perforated drain installed inside the basement along the footing. The floor is cut back near the walls, a trench is dug beside the footing, and the pipe is bedded in clean stone and covered with new concrete. Water that seeps in at the wall-floor joint or pushes up under the slab flows into the drain and on to a sump pit. For Lexington-area homeowners with water along several walls after storms, it's usually the most dependable way to keep the floor dry without digging up the yard.
Signs you may need one
- Water along the base of two or more walls after heavy rain
- Seepage rising through the floor near the walls
- Water entering at the joint even though the walls look sound
- Plans to finish a basement that has taken water before
- Hollow block walls that fill with water and weep at the bottom
Why does water gather at the footing here?
Lexington gets close to 50 inches of precipitation in a normal year, with its heaviest months in late spring and early summer. Much of that soaks into soil over limestone bedrock. Where clay-rich soil or the rock itself slows the water, it collects along the outside of the foundation and finds the wall-floor joint. Older homes often lack a working exterior footing drain, and on many lots built over filled ground, water follows the old drainage path toward the house.
What are the choices?
- Sub-slab perforated drain. The standard approach for poured and block basements: pipe in stone beside the footing, patched over with concrete.
- Block wall weep holes. In hollow block walls, small holes drilled into the bottom course let trapped water drain into the system.
- Wall drainage membrane. A dimpled sheet on the wall guides seepage down into the drain, often used before finishing.
- Cleanouts and inspection ports. Access points so the drain can be flushed if silt builds up.
Every interior drain needs a sump pump to empty it, and the discharge line needs a destination that won't send water back to the house or into a sinkhole.
What affects the cost?
- How many feet of wall need drainage
- Floor thickness and how much finished space must be opened up
- Footing depth and whether the wall is block or poured
- Number of sump pits and pumps
- Obstacles like stairs, furnaces and water heaters
The company you're connected with prices the work after an inspection. We don't quote prices.
Where we can connect you
Common questions
Will an interior drain keep my walls dry?
It keeps the floor dry by catching water at the footing. Walls can still show dampness, which a wall membrane, crack sealing or exterior work can address.
Do I need a permit for a basement drainage system in Lexington?
Ask the company or LFUCG's Division of Building Inspection. Most remodeling projects need a building permit, and only registered contractors can obtain permits in Lexington.
Can drainage be added to a finished basement?
Yes, but the lower part of the finished walls usually has to be removed and replaced, which adds to the job.
Related services
- Sump pumps and battery backups
- Foundation crack sealing
- Crawl space encapsulation
- Downspouts and surface drainage
More on sinkholes, permits and local rules: Fayette County karst basement guide.
Water at the footing, a leaking crack, or a crawl space that smells?
Call and a waterproofing company that works in the Bluegrass will come find the source.