Central Penn Waterproofing Central Penn Waterproofing is a family owned and operated business with over 30 years of combined experience in the waterproofing industry. As a customer of Central Penn, you can expect a prompt inspection of your water problem from our qualified and experienced staff. We'll resolve the problem with the most logical method or system available that is the most cost effective for you. Check with our satisfied customers, from our several hundred name references list furnished with every free estimate. Our customers include government projects, colleges, schools, churches, businesses, realtors, builders, and our most important customer, the residential home owner. No job is too large or too small. Serving all of Central Pennsylvania with quality workmanship at an affordable cost is our constant goal.