Having a properly installed sump means you can keep the water out and save your floors, walls, and ceilings from getting wet and moldy. Here are some ways to do so. A perimeter drain is a line of corrugated or clay pipe that collects water near your home. This is not as simple as it sounds. You may also wish to consider installing a submersible pump, which will operate underwater. A battery-powered system can provide up to 18 hours of backup time. While we are at it, we might as well check the humidity in the room. If you are wondering what the best way to waterproof your home is, you need a perimeter drain and a sump pump to get the job done.