Crawl Space Conditioning

Crawl space conditioning in Delaware

crawl space conditioning before and afterCrawl Spaces under homes can create enormous headaches for homeowners. A crawl space is susceptible to moisture and deterioration. Because the soil has high humidity, a crawl space naturally becomes damp since the crawl space is in direct contact with the soil. Damp environments are unhealthy, harbor mold and create an ideal living space for pests.

Think this damp space is isolated and doesn’t affect the interior of your home? Think again.
The natural airflow of a home is from bottom to top (ground to sky). As your home naturally breathes, the moist air (and everything in it) flows up and into the living areas of the home.

By properly air sealing and insulating your home’s crawl space, you win in many ways:

  • Create a comfortable and healthier living environment for you and your family
  • Save on energy costs by not having to heat or cool the air from the crawl space that is pulled into your home due to natural air flow
  • Add storage space by creating a clean and dry space underneath your home.

There are two steps to properly air seal and insulate a crawl space:

1. Floor Liner

  • Seals out moisture and soil gases
  • Unaffected by storage items and human traffic
  • We utilize a multi-ply 6, 12 or 20 mil poly liner that has a 25-year manufacturer’s warranty

2. Spray Foam or Rigid Foam Insulation

  • Allows the walls of the crawl space to breathe
  • No nesting support for insects or rodents
  • Does not support mold growth
  • Can be installed to your specific choice of R-value


Have questions about your crawl space? Contact us today.


Crawl Space Insulation Projects

See examples of foam board installed around the walls of the crawl space, covered with poly liners and air sealed between the floor of the house and the top of the crawl space.