The PHD Sealed Crawl Space System

The Solution

The PHD Sealed Crawl Space System completely isolates your home from the earth. This dramatically reduces the humidity level in the air, which controls the conditions necessary for mold growth and rot in your crawl space and makes your entire house healthier.

Whenever the outside air is warmer than the inside air - and especially when it’s humid outside air - its entirely possible to develop condensation problems within the subterranean levels of a home. This is because the relative humidity of air goes up 2.2% for every one-degree its cooled. Crawl spaces are often always cool because they are below ground and usually have duct work present. Also, the airflow in a house is like a chimney - air flows upwards, allowing air to escape the upper levels, with new air being sucked in at the lower levels.

So when it’s hot and humid in the summer, regardless of precipitation, your crawl space may be under the most stress it has been all year! Even without condensation, high relative humidity levels are relatively common, which can allow mold to form and cause "stinky crawl space syndrome." And dust mites thrive high relative humidity environments as well.

The easiest way to eliminate condensation issues is to take water out of the environment as efficiently and effectively as possible(not so easy unless you have the right equipment to do it with).

Our trained installers start by removing unnecessary wood and organic materials from your crawl space floor. Rocks and uneven surfaces are also leveled as needed. The PHD System Liner is then carefully cut and installed. The installers often work in their socks at this point, once the floor pieces are laid out. That’s how spotless your finished crawl space will be!

The PHD Sealed Crawl Space System is a completely sealed system that extends over the floor and walls to ensure full isolation for the earth below it. The end result is an extremely tough, impervious liner - and a healthier living space above it!

The top-most edge of the PHD System Liner is wrapped at least 6 inches up the stem wall and  then sealed against the foundation using a closed cell polyurethane foam. This closed cell adheres to the wall and becomes an impenetrable barrier against air and moisture as well as providing insulation. The also increases the“racking” strength and adds structural integrity to the walls.

All the floor seams are sealed with special 4" wide sealing tape and/or sealant made especially for the PHD System Liner. The PHD System Liner is also sealed around other objects in the crawl space such as columns or piers with any combination of sealants or concrete.

Eliminating Ventilation

Most dirt crawl spaces are vented to get the moisture out. The issue with vented crawl spaces are that the vents let humid air enter the crawl space area in the summer. This adds moisture to the crawl space, and makes the house harder to keep cool. In the winter, the same natural vents let in cold air, which causes very uncomfortable floors above and higher heating costs. Numerous experts agree that vented crawl spaces are not the most energy efficient. With the PHD Sealed Crawl Space System, your vents are no longer needed! This will save considerably on energy costs, and make a more comfortable and healthy home.

The PHD System Liner

The PHD System liner is a state of the art liner system designed to keep your crawl space isolated from the earth. We use various thicknesses of material depending on your situation. Unlike most of our competitors, we do not hold to a “one size fits all” mentality. Our liners are created from multiple layers - blends of high density polyethylene, low density polyethylene, and polyester cord reinforcement. The bright white finished side really lights up a crawl space with the natural, available light and makes it easy to see that your crawl space is free of mold and clutter.

The PHD System liner is durable enough for you to crawl on and use your crawlspace for storage. Servicemen can access your crawl space without worry of putting holes or tears in the liner. The installed liner is completely impervious to moisture penetration.

Drainage Options

Some crawl spaces are naturally wet and may require a drainage system underneath the PHD System Liner. We will recommend a drainage system, sump pump or gravity drain, depending on what is most efficient for your crawl space. The drainage option will be installed in all low spots in your crawl space. As an additional option, a drainage swale or trench system can also be developed around the perimeter to help drain water to the low areas.

Dehumidification

When "dry" means - feels dry, smells dry, and looks dry. Just because you have a waterproofing system, doesn’t mean you have a dry crawl space.

A dehumidifier is the obvious answer. Pure House Dynamics has been dealing with this issue for several years. We will prescribe the proper equipment (dehumidifier, air movers, etc.) for your situation based on the area and desired humidity levels to ensure that your crawl space and home are as healthy and dry as possible.

What lurks under your home?

The humidity levels in many crawl spaces go from over 80% to under 50% after the PHD Sealed Crawl Space System is installed. Homeowners have noted that the windows and doors upstairs are operating better because the swollen wood has dried out. Even buckling hardwood floors and carpets dry out.

Crawl spaces with concrete floors that are wet or damp can be very difficult to install a drainage system in because they are so low, and removing concrete is difficult or impossible. Further, a concrete floor is porous and lets water vapor pass through it. The PHD Sealed Crawl Space System is a perfect solution for these problems.

We have successfully sealed hundreds of crawl spaces in the Southeast US. Call us today for your free consultation and the set up your crawl space evaluation.