Crawl Space Vapor Barrier &
Encapsulation Services in PA & NJ

Crawl Space Repair
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Crawl Space Encapsulation in Philadelphia & nearby

areas in PA and NJ.

Do you know what is lurking in your crawl space? What you can’t see can still affect you, your family and your property in many ways, including:

  • Foul odors
  • Mold, dry rot & structural decay
  • Bouncy or sagging floors
  • Poor indoor air quality
  • Uneven temperatures and discomfort around the house
  • Cold floors during the winter
  • High energy bills

Crawl Space Encapsulation is the science-backed way to solve and prevent all these problems.

The Problem with Crawl Space Vents

The old-fashioned way to build and treat crawl spaces (opening the vents and lining the floor with a plastic sheet) was proven to be both inefficient and disastrous. Modern building science concluded that this type of treatment was either causing or aggravating the common crawl space problems common across the U.S.

Crawl spaces get moisture from two sources: groundwater and outside air. The typical plastic floor cover doesn’t completely isolate the crawl space from the ground, so groundwater is still evaporating into the space. To make matters worse, it tends to rip, tear and crumble over time.

Crawl space ventilation, once thought to help dry things out, is allowing humid air from the outside to get in. That is especially bad during the summer because humid air enters the cool crawl space, relative humidity levels reach above 100%, at which point condensation starts to occur. Wood beams and joists soak up the water, and the moist, soft wood invites mold, rot, and termites.

Level 2 Healthy Crawl Space Protection:

CrawlShield™ Encapsulation System, the Ultimate Solution for Crawl Spaces.

  • Completely isolates the crawl space from all sources of moisture.
  • Serves as a deterrent for pests and wildlife
  • Prevents radon gas from ascending into the crawl.
  • Helps lower energy bills
  • Strong tear resistant, 16-mil thick liner
  • Quality Product Made in USA
  • Class A Fire Rated


Healthy Basement & Healthy Crawl Space Certificate

The Healthy Basement and Crawl Space Certificates were created using specific sets of criteria to provide a healthy indoor living environment. Air pollutants and excessive moisture levels in the basement or crawl space can negatively impact the odors in the home as well as cause health problems with those who live there year-round - including yourself!

We offer 6 levels of Healthy Basement Certificate, and 5 levels Healthy Crawl Space Certificate, each designed to solve specific problems and protect your home, family, and property value on the long run.

Steps towards a healthy basement and a Nationally Backed Warranty.

All of our Healthy Basement / Crawl Space Contractors are trained and certified.

Steps towards a healthy crawl space and a Nationally Backed Warranty.

All of our Healthy Basement / Crawl Space Contractors are trained and certified.

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Service Area

Jamison Waterproofing offers a variety of services from waterproofing to foundation repairs. We offer the following services in your area, basement waterproofing, crawl space encapsulation, sump pump installation and service, basement crack repair, vapor barriers and moisture control.