Crawl Space Encapsulation

Expertise in Crawl Space Encapsulation

According to researchers installing a crawlspace encapsulation can reduce moisture from capillary rise by up to 90%

  • A crawlspace with a dirt surface floor can contribute several gallons of moisture per day into a home
  • If a crawlspace is wet from surface runoff, roof spillage, or plumbing leaks the amount of water pumped into the home can be much larger and more harmful
  • Encapsulating a dirt crawlspace is the most effective practice that can substantially reduce unwanted building moisture and mold problems​

Current best practice controlling crawlspace moisture involves:

  1. Proper grading around the house structure: (Ensure all water runoff is directed away from the structure)
  2. Seal the crawlspace from outdoor air:  (Close off all crawlspace vents to convert the crawlspace to a conditioned space)
  3. Identify and cure sources of crawlspace moisture:  (Majority of wet or moldy crawlspaces are caused by gutter and downspout issues combined with in-slope grading)
  4. Encapsulate the interior of the crawlspace: (Utilize a polyethylene moisture barrier in thicknesses ranging from 10 mil to 20 mil)
  5. Install a crawlspace dehumidifier:​ (Crawlspace dehumidification controls the moisture level protecting the house structure, preventing mold,  and reduces the chance of pest infestation)
  6. Inspect the crawlspace periodically:  (Ensure the moisture barrier is structural, the dehumidifier is operational, and that no water intrusion has taken place)

Controlling the moisture and humidity in your crawlspace protects your health:

Dust mites are the most common allergen-producing organism found in homes. They live in carpets, upholstered furniture, bed pillows and mattresses.

Dust mites cannot survive in areas where the humidity level is below 50%. If the relative humidity rises above 50% they thrive and reproduce, their appetite increases and therefore their fecal matter (the source of the dominate dust mite allergen) increases. Ninety percent of the population that experiences any allergy-based symptoms reacts to dust mite allergens.

  • Mites need to absorb humidity, they cannot drink water
  • Adult mite lifespan: Up to 3 months (3 larval stages)
  • Reproduction: Female mites lay about 25-50 eggs
  • Habitat: Mites live in carpet, fabric upholstery, and mattresses
  • Diet: Human skin scale, animal dander, and trace nutrients
  • Allergen: Dust mite fecal material