13 / 17Overview
Exterior Foundation Waterproofing Around Murfreesboro, Explained
Exterior waterproofing means excavating along a below grade wall, cleaning and repairing it, then applying a membrane and drainage layer that sends water down to a drain at the footing. It is most common on basement walls and on foundations that retain soil on one side.
It is a substantial project, but it addresses water at its source rather than managing it after it enters the home.
When Exterior Waterproofing Is Considered
- Water seeping through basement walls during rain
- White mineral deposits on interior wall surfaces
- Peeling paint or damp drywall on below grade walls
- Cracks in below grade walls that leak
- Finished basements where interior systems are not desired
Components of an Exterior System
A complete system typically includes excavation to the footing, wall cleaning and crack repair, a waterproof membrane, a drainage board that relieves water pressure against the wall, a perimeter drain at the footing, and careful backfill.
The drain must have a place to go. Discharge to daylight or to a sump is planned before excavation begins.
Exterior Waterproofing Steps
- 01
Excavate
Soil is removed along the wall down to the footing.
- 02
Prepare the wall
The wall is cleaned, and cracks are repaired.
- 03
Membrane and board
Waterproofing and drainage layers are applied.
- 04
Drain and backfill
The footing drain is set, and the trench is backfilled and graded.
Landscaping and Access
Excavation disturbs beds, walkways, and sometimes utilities near the wall. Planning the project around those features, and marking utilities first, keeps surprises to a minimum.
Pairing waterproofing with surface drainage correction keeps less water reaching the wall in the first place.
Exterior work is weather dependent. Open trenches and fresh membrane need dry conditions, so scheduling often follows the forecast. Interior finishes usually stay untouched, which is one of the main reasons homeowners with finished basements choose an exterior approach over an interior drainage system.