How Do I Choose the Best Crawl Space Door?

Crawl space doors should be well insulated.
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  • Written By: B. Turner
  • Edited By: W. Everett
  • Last Modified Date: 19 October 2014
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The crawl space beneath a home provides access for maintenance and repair of pipes, wiring, and other equipment. A crawl space may also serve as a storage area in homes with no basement. In order to access this area, homeowners must install a crawl space door, which can be located inside the house or out. The right crawl space door not only keeps the space secure and allows for convenient access, but also helps to prevent moisture problems and maximize energy efficiency. Choosing the right door can also minimize pest infiltration and reduce the risk of mildew and mold.

Manufacturers construct crawl space doors from a variety of materials, including wood, metal, and composites. Wood offers an attractive finish, but leaves the crawl space susceptible to termites and moisture damage. A metal crawl space door offers increased security and resistance against termites, but may rust or corrode when exposed to moisture. Composite doors made from thermoplastics often provide the highest level of moisture resistance and durability, but may also come with a higher price tag.

Homeowners can choose from doors with a built-in frame, or those that come with trim kits to create a finished look. Some fit right into a hole cut into the crawl space, eliminating the need for a frame. In special applications, it may be more cost-effective to construct a crawl space door at home from wood or metal.


When choosing a crawl space door, look for units that feature sturdy construction and a secure lock. Check that the door is easy to operate, and look for heavy-duty locks and hinges that will hold up over time. Stick to moisture-resistant materials whenever possible, including stainless steel, thermoplastics, or galvanized steel. Review the installation requirements before you buy to ensure the door meets your needs.

Choosing a door with built-in insulation can help keep your home more comfortable and minimize energy loses. Look for foam or batt insulation lining the door surface, and check for seals around the entire perimeter or the door and frame. Quality seals can also keep excess moisture out of the crawl space, reducing the risk of rot or mold.

The right crawl space door will not only function as intended, but will also blend in with the rest of your home's appearance. On the exterior of the home, look for a unit that can be painted to match the surrounding surface, or choose a pre-finished unit that matches or complements your siding. When choosing a crawl space door for inside the home, appearance may be less of a concern if the door will be located in an out-of-the-way area.


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