BasementProof Waterproofing
Milwaukee Basement Sealing Specialists

COMMERCIAL
WATERPROOFING.
DONE RIGHT.

BasementProof specializes in large-scale commercial and industrial waterproofing across New England. From parking garages to plaza decks — we build systems that last decades.

Licensed & Insured
4.8★ (156 Reviews)
Commercial-Grade Systems

19+

Years in Business

3,200+

Commercial Projects

100%

Code Compliant

10 Yr

Workmanship Warranty

What We Do

Commercial Waterproofing Services

Industrial-grade waterproofing systems for commercial buildings, parking structures, and below-grade construction.

Commercial Waterproofing

Large-scale foundation membranes, plaza deck systems, and below-grade waterproofing for commercial buildings.

Below-Grade Sealing

Subterranean parking garages, basements, and utility rooms sealed with industrial-grade membranes.

plaza Deck Drainage

Green roof and plaza deck waterproofing with redundant drainage layers and leak detection systems.

Bulkhead & Retaining Wall

Structural waterproofing for retaining walls, bulkheads, and sea walls with marine-grade coatings.

Commercial Sump Systems

High-capacity sump pump arrays, lift stations, and automated dewatering for commercial properties.

Leak Detection & Repair

Electronic leak detection, thermal imaging, and precision repair for existing waterproofing systems.

Client Reviews

What Commercial Clients Say

4.8 out of 5 — 156 Google Reviews

“BasementProof handled the waterproofing for our 40-unit apartment complex. Professional from bid to completion. Passed all inspections and the building has been bone-dry for 3 seasons now.”

Robert Chen

Boston, MA

“We manage a commercial plaza with underground parking that kept flooding. BasementProof installed a redundant drainage and membrane system. Zero issues since. Their project management was outstanding.”

Sarah Mitchell

Cambridge, MA

“As a general contractor, I have worked with many waterproofing companies. BasementProof is the most reliable — on time, on budget, and their documentation is impeccable. My go-to for any commercial job.”

James O'Connor

Quincy, MA

Get Started

Request Your Commercial Project Quote

Tell us about your project and we'll provide a detailed quote with scope, timeline, and materials breakdown within 48 hours.

(414) 555-2300

Mon–Fri 7am–6pm

info@basementproof.com

Quotes within 48 hours

Milwaukee, WI & New England

MA, NH, RI, CT, VT, ME

Talk with Us