Why Basements Leak in Montgomery, AL
Montgomery's expansive clay soil holds moisture for extended periods after heavy rain, building hydrostatic pressure against basement walls. Once that pressure exceeds the wall's capacity to resist, water finds its way through cracks, cold joints (the joint between the footing and wall), and porous block or brick masonry. Older basements built before modern waterproofing standards are especially vulnerable.
Interior vs. Exterior Waterproofing
Exterior excavation waterproofing addresses the problem at its source — the outside of the foundation wall is exposed, coated with waterproof membrane, and protected with drainage board and a French drain. It's the most comprehensive solution but requires full excavation around the perimeter. Interior waterproofing systems (perimeter drain tile with sump pump) manage water that enters the basement by channeling it to a sump before it can damage the interior. Both approaches are effective; we recommend based on site conditions and budget.
What Our Interior System Includes
Our interior waterproofing system includes: a perimeter drain channel installed at the footing level, a properly sized sump pump with battery backup, a discharge line routed away from the foundation, and wall panels that channel seepage down to the drain before it can wet the floor. The system does not stop water from entering the wall — it intercepts and removes it before it becomes a problem.
Basement Waterproofing Cost in Montgomery
Interior perimeter drain systems for a full basement run $4,000–$8,000 depending on square footage. Exterior excavation waterproofing runs $8,000–$15,000 for a typical residential basement perimeter. Partial treatments addressing specific leak areas run $1,500–$4,000. All systems come with a written warranty on materials and installation.