What Is Crawl Space Waterproofing?
Standing water or chronic seepage in a crawl space saturates the soil, softens the ground beneath supports, and provides the moisture that fuels mold and wood rot. APS Foundation installs interior crawl space waterproofing systems that collect and drain water before it reaches the wood structure. The system consists of a perimeter drainage channel installed in a trench at the base of the crawl space walls, directing water to a sump pit. A submersible sump pump with battery backup removes water from the pit and discharges it away from the structure. Battery backup ensures the system continues operating during the power outages that often accompany Alabama's severe storms. Crawl space waterproofing is typically combined with encapsulation, the drainage system manages groundwater and seepage while the vapor barrier addresses atmospheric moisture. APS designs systems for the specific water source at each site.
How APS Approaches Crawl Space Waterproofing
- 1
Free On-Site Assessment
A trained APS technician visits your property, documents the problem, and identifies the root cause before recommending any repair.
- 2
Written Estimate
You receive a clear scope of work and cost with no obligation. We explain the method chosen and why, in plain language.
- 3
Repair and Transferable Warranty
Our trained crews complete the repair using professional equipment. All APS repairs carry a warranty that transfers to future owners.
What Does Crawl Space Waterproofing Cost?
$3,500 to $9,000 depending on crawl space perimeter and water volume
Frequently Asked Questions
What causes water in a crawl space?
Common sources include groundwater seeping through the foundation walls or floor, surface water draining toward the structure from improper grading or gutters, and condensation from humid outdoor air. APS identifies the source before designing the drainage system.
Does a sump pump require power?
The primary sump pump runs on household current. APS includes battery backup so the system continues operating during power outages, critical given Alabama's frequency of severe weather.