Interior Foundation Waterproofing in Montgomery, AL

Interior foundation waterproofing is the most common method used in Montgomery, Alabama

homes. It manages water after it enters the foundation, collecting it in perimeter drains and

pumping it away. For many homeowners, interior waterproofing offers the best balance of cost

and effectiveness.

How Interior Waterproofing Works

An interior waterproofing system consists of a perimeter drain (also called a French drain or

drain tile) installed just inside the foundation walls, and a sump pump to remove collected

water. Water that seeps through cracks, the cove joint, or porous concrete flows into the drain

and is gravity‑fed to the sump pit. When the water reaches a certain level, the sump pump

activates and discharges the water outside, away from the foundation. Montgomery

Foundation Repair Co installs interior systems that are virtually invisible once the floor is

finished.

Installation Process

Installing an interior drain requires cutting a trench in the basement or crawl space floor along

the perimeter. We use a concrete saw and remove a 6‑ to 12‑inch strip. The trench is excavated

to a depth below the floor slab. We lay a perforated pipe on a bed of gravel, then cover the

pipe with more gravel. The trench is capped with new concrete, which can be finished to match

the existing floor. A sump pit is dug at the low point, and a pump is installed. The entire

process takes 2‑3 days for a typical basement. Montgomery Foundation Repair Co cleans up

thoroughly and can match floor finishes.

Advantages of Interior Systems

Interior waterproofing is much less expensive than exterior ($5,000‑$12,000 vs.

$15,000‑$30,000). It does not disturb landscaping or require excavation outside. It can be

installed in finished basements with careful planning. It works even when the water table is

high. And it can be combined with radon mitigation if needed. For most Montgomery homes

with basement water problems, an interior system is the best solution. Montgomery

Foundation Repair Co has installed hundreds of interior systems across the River Region.

Maintenance Requirements

Interior systems require periodic maintenance. The sump pump should be tested every six

months by pouring water into the pit. The pump’s intake screen should be cleaned. The battery

backup (if installed) should be tested and replaced every 3‑5 years. The drain pipe may need

professional cleaning every 5‑10 years to remove silt. Montgomery Foundation Repair Co offers

maintenance contracts to keep your system in top shape. With proper care, an interior system

will last 25 years or more.

Frequently Asked Questions