Alan W.
7/8/2025
Can not say enough good things about AJ Waterproofing. I had been having an issue with water getting into my crawl space for a long time. I called a different company first, and they immediately...
A J Waterproofing
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3774 Kratz Rd
Collegeville, PA 19426
A J Waterproofing, based in Collegeville, PA, is a family-owned and operated company specializing in comprehensive waterproofing services for both residential and commercial properties. With over 40 years of experience, they offer solutions such as yard storm drainage, sump pump installations, and French drain systems, all backed by a transferable lifetime guarantee.
Their meticulous workmanship ensures that all projects are completed to the highest standards, leaving the work area cleaner than when they arrived. Customers appreciate their knowledgeable team, flexible financing options, and commitment to clear communication throughout the waterproofing process.
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Reviews
4.542 reviews
Stephen H.
5/12/2025
I didn't use AJ's services, but he took the time to speak with me over the phone and give me really helpful information about my issue. He reviewed pictures I sent him, gave me his advice on what...
Matt M.
8/18/2024
Update: AJ called me back after reading my original review and apologized for his behavior during our previous conversation. He then spent several minutes asking me about what I decided about...
Charles L.
5/23/2025
AJ took time inspect the house and provided professional suggestions. Very helpful suggestions! Thanks!
Cindy K.
12/5/2024
AJ and his crew did a fantastic job installing a French drain, sump pump, sump pit, and backup sump pump in our basement. AJ is both knowledgeable and thorough. They cleaned up after completing...
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