Interior waterproofing (or sometimes known as internal waterproofing) repairs your basement leaks from the inside of your home and is the best solution for a damp or wet basement. When your basement becomes damp and moist, it is best to have an interior waterproofing done in your basement to prevent the growth of mold and mildew, which will create harmful smells and bacteria that affect your health. This is also one of the waterproofing solutions that will help take care of hydrostatic pressure that builds up and causes a wet basement.