certified company
Based on 144 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
1st year as a Best Pick Call
"Jamison is an authorized GrateProducts contractor, which includes exclusive access to innovative products, comprehensive training, and continued support from the manufacturer. We offer a patented, closed-basement drainage system installed by certified technicians."

Frank Jamison | President
Company Information
Services Offered
Jamison Basement Waterproofing provides foundation waterproofing, stabilization, and structural reinforcing services for residential and commercial customers.
Services Not Offered
The company does not offer foundation leveling services.
Jamison Basement Waterproofing offers a transferable limited lifetime warranty. Restrictions may apply.
Company History
The company was founded in 2006, and owners Frank Jamison and Patricia Jamison-McNamara have been in the industry since 1989.
Jamison Basement Waterproofing is a member of the Basement Health Association (BHA) and employs a BHA Certified Waterproofing Specialist and Certified Egress Specialist. The company is certified by GrateProducts as a Healthy Basement Contractor and a Healthy CrawlSpace Contractor.
Areas Served
Montgomery County, Chester County, The Main Line, Bucks County, Delaware County
A selection of 144 homeowner reviews:
“It was a very positive experience. They fixed a foundation crack that we had. The total service was good—very responsive and very knowledgeable. They just did an excellent job. I'd give them an A+. I'd recommend Jamison.”
“Everything was good. Half of it was foundation work, and the other half was waterproofing. All their work was excellent. I would recommend them for it.”
“Jamison did foundation repair. They did work on a French drain. I think they were very professional. They did a good job, and it's exactly what they promised. They get an A+ from me. I would recommend them.”
“They fixed a foundation crack and a leak in our window well. They were professional, they gave us a good description of the work, and they were on time. They earned an A+.”
“We had a hairline crack in a cinderblock foundation. It was a finished basement that wound up having a decent amount of water and black mold, so we had a company come in and do the mold remediation. Jamison took care of the French drain, and they kind of sealed everything with a vapor barrier and did some waterproofing. These guys were fantastic. They're an A+ for sure. They were unbelievable, these guys.”
“It was foundation repair and waterproofing. I'm getting ready to sign another contract with them over the next week or so. I have no reason to not give them an A+ on the first job. I don't have any complaints. I'm going to sign another contract with them, so that says a lot. I keep putting it off. I was supposed to sign last week, but then that got put off, and I just got done texting the guy saying let's wait until after the holidays.”
“I'm very happy. Jamison did foundation repair and waterproofing. I'd give them an A. They were very good. They did everything right. There were no problems. They did a great job. It is likely I would recommend them.”
“It was an excellent experience—no complaints—and I would recommend them.”
“They fixed a crack in the basement. They did a good job. They did some foundation repair. They're good about that. I think it was OK.”
“It was a positive experience.”