What Are Crawl Space Doors?
A crawl space door is the sealed, durable access cover that closes the entry to the crawl space. On many Alabama homes this access is a warped piece of plywood, a rusted grate, or an open gap, all of which let humid outdoor air, water, and animals into a space you are trying to keep dry and sealed. A proper insulated, gasketed access door completes the sealed envelope of an encapsulated crawl space, and even on its own it removes a significant, often overlooked source of moisture and intrusion. APS installs a correctly sized, sealed door as part of encapsulation or as a targeted improvement.
How Crawl Space Doors Work
The access opening is measured and fitted with a rigid, insulated door that seals against a gasketed frame, replacing the makeshift cover or open gap. Because the door closes tightly against its frame, it stops the exchange of humid outdoor air and blocks water and animals at the access point, which is one of the largest remaining openings after the foundation vents are sealed. In an encapsulated crawl space, the sealed door is what keeps the controlled interior conditions from leaking out through the entry.
“People seal the whole crawl space and leave a rotted plywood door on the front of it. That door is a hole in everything you just paid for.”
How APS Installs Crawl Space Doors
- 1
Measure the Access Opening
APS measures the existing crawl space access and checks the surrounding foundation for the correct door size and fit.
- 2
Prepare the Frame
The opening is prepared so the new door frame seats squarely and seals against the foundation.
- 3
Install the Sealed Door
A rigid, insulated, gasketed door is installed to close tightly against the frame.
- 4
Seal and Integrate
The door is sealed to the foundation and integrated with the encapsulation so the crawl space envelope is continuous.
- 5
Verify the Seal
APS confirms the door closes and seals properly, closing the air and water path at the access point.
What Crawl Space Doors Cost and What Is Covered
Cost Range
Cost depends on the crawl space size, access, and system specified. APS provides a free written estimate after the assessment.
Warranty
APS in-house workmanship warranty plus manufacturer warranties on system components, both fully transferable to future owners
Frequently Asked Questions
Is a crawl space door really worth it on its own?
Yes, more than most homeowners expect. The access point is often one of the largest openings into the crawl space, so a warped or missing cover lets in a steady flow of humid air, water, and animals. A sealed door closes that gap.
Does the door replace encapsulation?
No, it completes it. Encapsulation seals the floor and vents, and the door seals the entry. A sealed crawl space with an unsealed access door still leaks humid air, so the two go together.
Will a sealed door keep animals out?
A properly fitted, sealed door removes the easy access point that a broken cover or open gap provides, which is a major part of keeping animals out of the crawl space.
What are these doors made of?
APS uses rigid, insulated doors built for below-grade conditions with a gasketed seal, rather than the plywood or thin metal that warps and rusts in Alabama's climate.