Your crawl space, even though it is under your house, should still be dry. You don't want water to accumulate in your crawl space. Water contained in your crawl space can lead to the underside of your home experiencing water damage and potentially being contaminated with mold. Water damage and mold are two things you really don't want to have to deal with if you don't have to. Keeping water out of your crawlspace requires a full-scale approach.
#1 Add Drains Around the Perimeter
Your roof is not the only place where you need a drainage system. You also need a drainage system around your crawl space as well. A perimeter drainage system is designed to go around the edge of your crawl space. The system will help capture any moisture that seeps down the walls into your crawl space and deal with any water that comes through the floors as well. A perimeter drain system will carry the water away and keep things dry under your home.
#2 Place Drainage Matting On the Floor
The entire floor of your crawl space should be covered with drainage matting. Drainage matting is essentially a plastic sheet with dimples; it kind of looks like bubble wrap. Its main purpose is to help water drain properly if it gets onto the floor of your crawl space. This is a basic preventative material that should cover up any crawl space. It may break down over time, so you may have to remove the material and reapply it every decade or so.
#3 Add a Sump Pump
Every crawlspace should have a sump pump. A sump pump is one of the best ways to make sure that if excess water does get into your crawlspace, such as in the event of a flood, you have a way of dealing with the excess water. When water gets into your crawl space, you want to get rid of it as quickly as possible, and a sump pump is the best way to do that. The best sump pumps will run on a backup battery. This is not a system you can just put in place and forget about; you will have to check on it a few times a year to make sure it is running properly.
#4 Install a Dehumidifier
Finally, it is a smart idea to install a dehumidifier in your crawl space as well. When you install a dehumidifier, you want to install one that will be able to primarily take care of itself. Install a dehumidifier that allows you to set the humidity level so that it will automatically turn on when appropriate.
If you want to keep your crawlspace dry, you need to set up a full-scale approach that will help keep water out of your crawlspace and deal appropriately with water that makes its way inside your crawl space. Contact a company like Central Penn Waterproofing to learn more.