"Siding protects your home from the elements, keeping your family comfortable and safe," explains Jim Eldredge, product manager at Sears Home Services. If your siding has begun to rot or crumble, then it cannot perform its vital role. In cases of circumscribed damage, you may be able to repair only the affected area. But if the rot has spread across the exterior, there's nothing to do but start over, this time with a rot-resistant material. Eldredge recommends Weatherbeater brand siding, because its vinyl composition means it does not naturally decay with prolonged exposure to exposure.