Crawlspace Waterproofing

An underground crawl space is a type of basement in which one cannot stand up and the surface is often soil. It is typically small enough that you need to actually crawl into it, hence the name. Crawl spaces offer a convenient access to pipes, substructures and a variety of other areas that may be difficult or expensive to access otherwise. While a crawl space cannot be used as living space, it can be used as storage, often for infrequently used items.

Crawl Spaces are made in similar ways to regular basements except they are smaller. For poured concrete foundations this means that the forms to size up the walls are shorter. A crawl space has several advantages over basements and slabs:

  • It gets the house up off the ground (especially important in damp or termite-prone areas).
  • It is a lot less expensive than a basement and comparable in price to a slab.
  • Duct work and plumbing can run in the crawl space, meaning that they are easy to service   and move over the lifetime of the house.

Crawlspace waterproofing is just as important as waterproofing a basement. If there is standing water in the crawlspace, this will cause mold and rot, wreaking havoc to the structure of your house if left alone. Water can also damage the floor joists which could cause your floor to collapse. Crawlspace waterproofing will prevent floods, mold, mildew and insect infestation.

In waterproofing the first thing to look at is the exterior condition of the landscaping and potential water sources, the idea is to control the water and divert it as much as you can.  Ensure the grade is sloped away from the foundation to avoid water collecting by the foundation wall and seeping into the crawl space. Also make sure downspouts and gutters are cleaned and in good working condition for the same reason.Crawlspace waterproofing

French Drains are also important in crawlspace waterproofing. Either an exterior or an interior French drain system can be installed. The interior drainage systems can work well to keep the crawl space dry and drained if any water does come into the crawl space. Exterior French drains are designed to catch the water and divert it before it comes into the crawl space. Sump pumps are also commonly installed in crawlspaces with a concrete floor.

Crawlspace waterproofing Heavy duty plastic liners are often used in crawl space waterproofing. They are installed after the waterproofing drainage system. The plastic sheet material promotes good drainage over the entire crawl space floor.

Installing a dehumidifier will also help to dry out a damp crawl space and automatically maintain a pre-set humidity level. By controlling crawl space humidity, you create conditions that are hostile to mold and mildew.

Crawlspace waterproofing is an investment for a clean and safe home.