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Crawl Space Encapsulation

Understand The Dos And Don’ts Of Crawl Space Encapsulation

Posted on January 06, 2023

There are crawl spaces in about 20% of all newly built homes in the US. These areas serve many purposes where crawl space encapsulation in the house, including hosting the irrigation system, HVAC, electrical, plumbing, and gas lines.

Mold and mildew issues, which are caused by moisture, are common in homes with open, vented crawl spaces. These issues may jeopardize your HVAC system’s durability and efficiency. Additionally, a wet crawl area may require costly repairs.

But what precisely is encapsulating a crawl space? What justifies the expense of this home improvement? More importantly, how do you enclose a crawl space effectively?

You’re in the proper place if you’re asking yourself these questions. We cover all the information you need to know about crawl space encapsulation Raleigh NC in this blog post.

What Is Crawl Space Encapsulation?


The process of encapsulating your crawl space with a waterproof barrier is known as crawl space encapsulation. Additionally, it features sealed walls, insulation for the foundation vents, and a crawl space air dehumidifier.

When the area is sealed off, crawl space encapsulation can be done most effectively. After you’ve sealed off the site, you can use a dehumidifier to keep the humidity levels constant.

The terms crawl space encapsulation and space insulation often need to be clarified to homeowners. However, each has a distinct function. A fantastic solution for issues like humidity and ground moisture is crawl space encapsulation. However, the insulation in the crawl space may be ideal for hard flooring.

How Is It Different From Insulation?


Crawl space insulation and encapsulation often need clarification from homeowners. But the two fulfill distinct purposes. When dealing with problems like ground dampness and humid air, crawl space encapsulation works fantastically. Crawl space insulation, on the other hand, is best used to combat hard flooring.

Now, let’s dive into the do’s and don’ts for encapsulating your crawl space.

Do’s And Don’ts


The Don’ts Of Crawl Space Encapsulation


Ensure everything is done correctly while upgrading your home; Here are a few things you shouldn’t do while enclosing your crawl space.

  • Encapsulate Only When There Is A Sealable Space.

While crawl space encapsulation will help keep it dry, if there are significant air gaps that allow outside air to enter the space, the encapsulation won’t function. Sealing off the external air sources is essential whether you’re encapsulating a crawl space so that the dehumidifier can adequately condition the air underneath.

  • Don’t Underestimate The Value Of A Drainage System

Some homeowners believe that encapsulations will prevent water from entering their underground area and that a drainage system is unnecessary. The problem with doing this is that encapsulation does not stop floods or water intrusion under houses.

Water damage is sometimes expensive to fix. Install a water drainage system that moves the water away to prevent situations where it sits against your property. A sump pump or a French drain system can be helpful.

  • Avoid Using Fiberglass Intermediate The Floor Joists

It would help if you only used fiberglass once you’ve decided to forgo sealing, dehumidifying, or conditioning your crawl space.

It could be wise to stay away from fiberglass altogether. The material needs to be fixed as insulation for crawl spaces. The results are minor when the material is put in an unconditioned, ventilated room.

As the material absorbs moisture, its R-value decreases. It is, therefore, useless as a material for encapsulation. The weight of the water causes the fiberglass to droop, which causes the encapsulation blanket to develop holes.

  • The Value Of Professional Installation Should Not Be Ignored

Many homeowners find that DIY house improvements are enjoyable and economical. However, assuming you can finish the crawl space encapsulation project yourself is foolish.

You risk squandering time, effort, and money if you don’t have the expertise and knowledge required for crawlspace encapsulation.

The Do’s For Crawl Space Encapsulation


It is time to discuss what you should do instead of avoiding the faults while encapsulating your crawl space.

  • Perfectly Sealed The Floor, Walls, And Vents Of Your Crawl Space

The project can begin in earnest once your crawl area has been ready for encapsulation. Your objective should be to completely seal off the crawl area from the outside air and the damp ground. To achieve this, be sure to:

  • Place A Heavy Plastic Vapor Barrier On The Crawlspace’s Floor.

The purpose is to prevent any moisture from entering the crawl space. Attach the vapor barrier to the floor, walls, machinery, piers, air handler, etc.

  • Seal Off Any Vents And Entries

You want to prevent outside elements from entering your crawl area. The best method is to close off any exterior access points. Spray foam and foam board are both options.

  • Gaps And Cracks In Air Seals

It’s time to concentrate on any further reaming cracks and gaps after you’ve finished sealing the main openings and vents. Band joists, plumbing penetrations, HVAC drain line runs, and wiring are a few examples.

  • Improving Air Quality

Air pollution can damage your health and make your indoor environment uncomfortable. Mold, mildew, and other contaminants can enter your home through an unencapsulated crawl space. Once the crawl area is sealed, this issue is resolved immediately.

Choosing The Right Professional For Crawl Space Encapsulation


The best option is to engage a qualified crawl space encapsulation contractor to handle the job for you. To ensure that the task is completed correctly, a professional brings crucial experience to the situation.

Give a call to Atlantic Foundation & Crawl Space Repair if you need help with your crawl space. Our crawl space professionals can eliminate a substantial moisture source and any moisture-related issues. Call 919-855-0855 to schedule an appointment.


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