Residential & Commercial


Frequently Asked Questions
Waterproofing Questions
1What causes a wet or leaky basement?
Most basement water comes from hydrostatic pressure - water in the soil pushing against your foundation walls and floor - plus poor exterior grading, clogged or missing drainage, and cracks in the foundation. A.J. Waterproofing diagnoses where the water is actually coming from and treats the problem at the source rather than just covering it up.
2What's the difference between interior and exterior waterproofing?
Interior waterproofing manages water once it reaches the foundation - typically an interior French drain and sump system that collect and pump water back out. Exterior waterproofing stops water before it gets in, usually by excavating around the foundation and sealing the walls. Many homes in the Philadelphia suburbs are best served by an interior system; A.J. will recommend the right approach after inspecting your home.
3How much does basement waterproofing cost near Philadelphia?
Every basement is different - cost depends on the linear footage treated, whether a sump pump system is included, and interior vs. exterior work. A.J. Waterproofing provides a free, no-pressure estimate and offers financing up to 60 months.
4Is your work guaranteed?
Yes. Every A.J. Waterproofing solution carries a written, transferable lifetime guarantee - the dry basement is guaranteed for the lifetime of the home, and the guarantee transfers to a new owner if you sell.














