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Crew Installing Crawl Space Vapor Barrier

Crawl Space Encapsulation

The BQ Basements & Concrete encapsulation system will seal out moisture that causes mold and musty smells and restore your peace of mind. 

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Although the term ‘crawl space encapsulation’ may sound daunting, the process is not nearly as complicated as it sounds. At its core, crawl space encapsulation is the process of sealing the space off from the outside and incorporating it into the envelope of the home.

An encapsulated crawl space is essential to the health of your crawl space and by doing it you will eliminate many, if not all, of your crawl space concerns. But first let’s explain what goes into encapsulation and why it is vital to have the work done by a trusted crawl space expert, like those at BQ Basements & Concrete.

Steps to Encapsulation

There are several steps to encapsulation, however, none are overly complicated and when explained. It becomes fairly easy to understand why encapsulation is the best solution for your home.

Step One: Sump Pump & Drainage

sump pump installation

One of the major issues in crawl spaces across the Philadelphia and New Jersey area is crawl space flooding. On average the area receives around 50 inches of rain per year, not including the annual snowmelt. All this water means crawl space flooding is a common occurrence.

Because of this, it makes sense that the first issue tackled is installing interior drainage and a sump pump. Although not all crawl spaces need a sump pump, your inspector at BQ Basements and Concrete will address the situation and make the right recommendation for your home. A CrawlDrainis another option. The CrawlDrainis placed on the crawl space floor and collects water from any possible leaking, such as plumbing or HVAC. Another option is drainage matting. This is placed directly on the floor as well and directs water to the sump pump to be quickly pumped out and away from the home.

Step Two: CrawlSeal™ Vapor Barrier

The next step is what makes the encapsulation system really shine. Regardless of the type of floor in your crawl space, dirt, gravel, or concrete, your crawl space needs to be sealed from outside elements. The experts at BQ Basements and Concrete use CrawlSeala 20-mil liner, the thickest available, to seal the floor and walls of your crawl space.

CrawlSeal™ Vapor Barrier is nothing like the builder grade 6-mil liner that may be currently in your crawl space.

Below are just some of the CrawlSealadvantages:

  • Seals Out Musty Smells
  • Creates a Clean, Dry, Storage Space
  • Reduces Allergens and Mold Throughout The House
  • Eliminates Excessive Moisture that leads to wood rot

Step Three: Vent Covers

If your home has crawl space vents, you’re not alone. A lot of homes in the Philadelphia area were built with this old construction model in mind. In the past, it was believed vents allowed crawl spaces to be ‘aired out.’ But the reality is venting allows more moisture to collect in the crawl space. Today, crawl spaces are no longer built with vents. So, what to do if your crawl space has vents? Install airtight vent covers. Vent covers not only seal out moisture but also protect against pests that may enter.

Step Four: Dehumidifier

If your home is unusually humid, investing in a crawl space dehumidifier is probably the right choice for you. Even after you encapsulate your crawl space, it’s still possible for your home and the area around it to have high levels of moisture. This is especially true for homes near water or in humid climates, like Philadelphia.

Although a dehumidifier isn’t a stand-alone solution to your humid crawl space problems, it can be an incredibly useful tool in addition to adding drainage and sealing the space.

Why Choose Encapsulation?

Air flows from the bottom to the top. So, in your home, that means the air in your crawl space is flowing up to the first and second floor where you and your family are breathing it. If your crawl space is moldy and musty, those smells and spores are coming along with the air—and could be putting the health of your family at risk.

The BQ Basements & Concrete encapsulation system will seal out moisture that causes mold and musty smells and restore your peace of mind.

Crawl Space Encapsulation in PA, NJ & DE

Contact BQ Basement & Concrete. Our trained inspectors will provide a full inspection of your home and leave you with a written, no-obligation quote to repair your crawl space problems. Our nearly 20 years experience repairing homes just like yours means you can trust our solutions and feel confident we’ll get the job done right—the first time.

We offer a wide range of crawl space services to parts of PA, NJ & DE including Greater Philadelphia area, Camden, Trenton, Cape May, Atlantic City, Wilmington, Dover and the surrounding area.


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535 Route 38 East, 149E
Cherry Hill, NJ 08002


106 Park Drive
Montgomeryville, PA 18936