Warning signs your crawl space needs attention
Crawl space problems build quietly, driven by humidity, groundwater, and poor drainage. Knowing the early indicators lets you act before moisture weakens the structure above.
What causes crawl space problems in Alabama
Alabama gets more than 55 inches of rain a year, and summer dew points regularly climb past 70 degrees. That constant humidity, not a single event, is what damages most crawl spaces in this state.
When warm, humid outdoor air enters a vented crawl space and meets cooler surfaces such as joists, subflooring, and HVAC ducts, it condenses. That moisture feeds wood rot and slowly weakens the structure above. Research from Oak Ridge National Laboratory and Building Science Corporation confirms that venting, designed for cold northern climates, is counterproductive in the humid Southeast.
Groundwater and poor drainage add liquid water on top of the humidity problem. Water seeping through foundation walls or pooling after storms saturates the soil, softens the ground beneath your supports, and raises the moisture load the rest of the home has to fight.
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APS crawl space solutions
We match the system to your crawl space: the source of the water, the condition of the wood, and the moisture load.
Crawl Space Encapsulation
A 20-mil reinforced vapor barrier, sealed vents, and a commercial dehumidifier convert an open, vented crawl space into a sealed, controlled environment.
Crawl Space Waterproofing
An interior drainage channel and sump pump system remove water from the crawl space before it reaches the wood structure.
Commercial Dehumidifier
A commercial-grade unit sized to your crawl space volume, with a self-drain line, holds humidity below the mold threshold year-round.
Wall Insulation
Spray foam or rigid board insulation on the foundation walls eliminates thermal bridging and protects HVAC ducts and water pipes.
Perimeter Drainage
A perimeter drainage channel with a sump pump and battery backup addresses groundwater seepage before it reaches the wood structure.
Crawl Space Support Jacks
Adjustable steel crawl space support jacks re-level and stabilize sagging floor systems and moisture-weakened supports.
Sequence matters: sealing a wet crawl space traps moisture inside it. APS addresses standing water and any structural repairs first, then drainage, then encapsulation. A free assessment determines the right order for your home.
Crawl space work across Alabama
Every photo is from an actual APS Foundation crawl space job across Alabama, no stock photography.
Serving Alabama and Columbus, GA
Four locations mean local crews, local permit familiarity, and faster response than regional competitors.
Birmingham and Irondale
Our home base since 1977. We know Jefferson and Shelby County soils, humidity, and permit offices better than anyone.
Huntsville, AL
Serving the Tennessee Valley. Crawl space moisture behaves differently over karst terrain, so we assess each site before recommending a system.
Mobile, AL
HBLB licensed for South Alabama, where a high water table and coastal humidity make crawl space sealing essential.
Columbus, GA
Full crawl space service across the Columbus metro, including Phenix City. Same APS standards, warranty, and family ownership.
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Frequently asked questions
How do I know if my crawl space has a moisture problem?
Signs include musty odor in the living space, soft or bouncing floors, high energy bills, visible mold or dark staining on joists, condensation on pipes or ductwork, and standing water after rain. If your home smells musty and you have a crawl space, schedule an inspection.
Is crawl space repair covered by insurance?
Standard homeowner's policies generally do not cover moisture damage that developed gradually. Sudden events like a burst pipe may be covered. Review your policy details.
How long does encapsulation last?
A properly installed 20-mil vapor barrier system with commercial dehumidification is designed for 20+ years. Periodic dehumidifier maintenance is required.