To install an exterior drain tile system, a trained professional must dig up the area around the foundation, clearing away plants, sidewalks, and other obstacles. Thus, the construction process can last longer than an interior drain tile system installation—but it won’t disrupt your home’s interior.
Another benefit of doing the exterior drain tile is that you do not need to remove or touch anything in the basement. Save for the installation of a sump pump, all of the work is performed outside the home. So, if you have a beautifully finished basement, it need not be touched to complete the basement waterproofing system.