Basement Waterproofing in Dallastown, PA

3 basement waterproofing companies · 1 based in town, 2 serve Dallastown from nearby · Updated September 2026

Most basement leaks start outside the wall: gutters emptying at the foundation, soil sloping the wrong way, or snowmelt soaking the ground. Ask a waterproofing contractor to check those first before quoting an interior drain and sump pump. Pennsylvania sellers have to disclose past basement water even after it has been repaired, so keep the paperwork from whatever gets done.

3 basement waterproofing companies

Based in Dallastown

Cottrell Basement Waterproofing LLC

Cottrell Basement Waterproofing LLC

The owner still works on the crew most days at Cottrell Basement Waterproofing, according to its description, and the company says it doesn't subcontract. Based on South Pleasant Avenue in Dallastown, it builds block foundation walls, waterproofs foundations and basements, installs sump pumps and egress windows, and offers a water-based epoxy treatment.

Free estimates
★ 4.5 83 Google reviewsClosed · opens Mon 8am

Serves Dallastown from nearby

Triple R Roofing & Siding
Based in York

Triple R Roofing & Siding

South Queen Street in York is the home of this Triple R Roofing & Siding location, which covers Dallastown, Red Lion, Jacobus, Loganville, Spry, Yoe and Leaders Heights. It handles shingle roof replacement, flat roofs, insurance claims, siding and gutter guards, and calls itself an Atlas Pinnacle contractor.

24-hour emergencyLicensedInsuredResidential
★ 5.0 25 Google reviewsOpen now · open 24 hours
York Basement Waterproofing Pros
Based in York

York Basement Waterproofing Pros

North George Street in York is the listed address for York Basement Waterproofing Pros, which covers York, East York, Shiloh and Dallastown and cites ten years of work. Leak detection, crawl space repair, vapor barriers, foundation repair, mold remediation, sump pumps and French drains are on its list.

★ 5.0 5 Google reviewsClosed · opens Mon 7am