Waterproofing your roof is probably the most important step in the roof installation process because it protects the materials your home was built with, as well as all the things you keep inside. Avoiding a leak collecting in your ceiling is a matter of prevention. Learning about what it takes to waterproof a roof is important so that you can see if your roof needs maintenance, or if a leak was repaired properly. Roof waterproofing is the layer of extra protection added to your roof that guarantees no water gets inside your home or starts causing the walls or support beams to rot. There are many causes of roof leaks, with inadequate roof waterproofing at the top of that list.