Foundation Waterproofing in Montgomery, AL

Foundation waterproofing is the process of preventing moisture from entering your home

through the foundation walls or slab. In Montgomery, Alabama, where annual rainfall exceeds

50 inches and humidity is high for much of the year, foundation waterproofing is essential for

basements and beneficial for crawl spaces. Proper waterproofing extends the life of your

foundation and protects your home’s interior from water damage.

Interior vs. Exterior Waterproofing

Two main approaches exist for foundation waterproofing in Montgomery, AL. Exterior

waterproofing involves excavating around the foundation, applying a waterproof membrane or

coating to the outside of the wall, and installing drainage board and footing drains. This

method stops water before it reaches the concrete. Interior waterproofing manages water after

it enters, using perimeter drains and sump pumps to collect and remove seepage. Montgomery

Foundation Repair Co helps homeowners choose based on budget, access, and the severity of

water problems. Exterior is more expensive but more complete; interior is less disruptive and

still very effective.

When Exterior Waterproofing Is Worth the Cost

Exterior waterproofing is recommended when foundation walls are severely cracked, bowing,

or have failed previous repairs. It is also the only option if you plan to finish the basement with

expensive materials (hardwood, carpet, drywall) that cannot tolerate any moisture. The process

requires heavy equipment, disturbs landscaping, and typically costs $15,000 to $30,000.

However, exterior waterproofing addresses the root cause of water entry and often carries a

lifetime warranty. Montgomery Foundation Repair Co provides exterior waterproofing for

historic Montgomery homes where preserving the original foundation is a priority.

Interior Waterproofing Systems for Most Homes

For the vast majority of Montgomery homes, an interior perimeter drain and sump pump offers

the best balance of cost and performance. Montgomery Foundation Repair Co installs a drain

system that captures water seeping through the cove joint (where the wall meets the floor) and

any wall cracks. The water flows to a sump pit and is pumped away from the house. This

system handles even heavy rain events and works whether you have a basement or a crawl

space. Because it is installed inside, you do not need to excavate your yard or remove

landscaping. Most interior systems are warrantied for the life of the home.

Waterproofing New Construction vs. Existing Homes

If you are building a new home in Montgomery, AL, waterproofing is far cheaper during

construction. Exterior dampproofing (a spray‑on asphalt coating) and drain tile can be installed

for $2,000 to $5,000. For existing homes, retrofitting waterproofing costs more but is still

worthwhile. Montgomery Foundation Repair Co often recommends a hybrid approach: improve

exterior grading and gutters first, then install an interior drain system. This combination

typically costs less than half of full exterior excavation and solves 95 percent of water

problems.

Frequently Asked Questions