Capital Caulking & Waterproofing
Expert Envelope Solutions from the Bay Area to the Central Valley. Union-trained tradespeople delivering commercial caulking, waterproofing, and joint sealant systems with unmatched precision.
Building Envelope Expertise
From pre-construction consultation to final inspection, we provide the full spectrum of specialty envelope work that California's leading GCs rely on.
Commercial Caulking
Sealing joints and penetrations throughout a building's structure — from expansion joints and window perimeters to panel joints and curtain wall interfaces. A core focus of our building envelope and joint sealant system work.
- Expansion joint sealing
- Window & storefront sealants
- Panel & curtain wall joints
- Building envelope systems
- Penetration & perimeter sealing
Waterproofing & Dampproofing
Comprehensive below-grade and above-grade membrane systems that protect structural integrity against water intrusion and hydrostatic pressure — from dampproofing foundations to full fluid-applied waterproofing assemblies.
- 07 1100 — Dampproofing
- 07 1300 — Sheet waterproofing membranes
- 07 1400 — Fluid-applied waterproofing
- Below-grade & plaza deck systems
- Blindside & split-slab applications
Joint Protection
Preformed joint seals and expansion control systems engineered for long-term movement accommodation across commercial and public works structures.
- 07 9100 — Preformed joint seals
- 07 9500 — Expansion control systems
- Plaza & podium deck waterproofing
Restoration & New Construction
Repairing and maintaining existing building envelopes alongside supporting new construction scopes. We diagnose water intrusion issues, remove deteriorated sealants, and reapply materials to restore watertight performance.
- Water intrusion diagnosis & remediation
- Existing sealant removal & replacement
- Joint & seam restoration programs
- New construction envelope support
- Condition assessment & reporting
Looking for a specific specification or system?
Craft, Safety & Accountability — By Design
CCW's union affiliation isn't a formality — it's our competitive edge. It means every worker on your project is trained, insured, and held to the highest professional standards.
Highly Trained & Certified Tradespeople
Every installer is a certified tradesperson through a rigorous union apprenticeship program — highly trained professionals who bring consistent, verifiable craft quality to every joint, seam, and membrane they install.
Strict Safety Standards
All operations are conducted in full compliance with Cal/OSHA Title 8 regulations. We maintain a fully implemented Injury and Illness Prevention Program (IIPP) and enforce rigorous safety training site-wide — protecting workers, general contractors, and building owners on every jobsite.
Certified Payroll & Prevailing Wages
We manage all certified payroll documentation and prevailing wage compliance in-house — making public works bids and federally funded projects straightforward for owners and GCs alike.
End-to-End Contract Administration
From pre-construction submittals through final punch list, we oversee the complete contract administration process — keeping every deliverable, RFI, and closeout document on track.
When you hire CCW, you get a contractor whose workforce is backed by one of the most respected trade unions in the building industry — and all the quality and safety guarantees that come with it.
Built on Integrity. Sealed with Precision.
Capital Caulking & Waterproofing Corp was founded on a simple premise: California's commercial construction market deserves a specialty envelope contractor that combines union-quality craft with modern project management.
Headquartered in San Leandro, CA, we regularly partner with glaziers, bricklayers, tilt-up construction companies, and concrete masonry firms across the Bay Area, Sacramento metro, Central Valley, and statewide. Whether it's a curtain wall system in San Francisco or a tilt-up warehouse in the Central Valley, we bring the same commitment to every joint, seam, and membrane we install.
Our CSI-specification expertise means GC estimators and project managers can count on us to read the drawings, understand the spec, and execute flawlessly — every time.
“We don't just seal buildings. We protect the investments people pour their lives into.”
The Team Behind Every Project
Experienced professionals who bring technical depth and client-first service to every engagement.
Shaun Steinbach
Chief Executive Officer
Shaun is responsible for company overhead, in-field operations, and the overall flow of business at CCW Corp. He maintains direct client relationships and ensures the right resources, people, and processes are in place on every project — keeping CCW's reputation for quality and reliability front and center.
Ryen Ramirez
Project Manager / Estimator
Ryen handles in-field operations, client relationships, and new business development alongside his core estimating and project management responsibilities. He also manages the company's required certifications, ensuring CCW stays fully qualified and compliant for every project type we pursue.
Mike Mumford
Chief Financial Officer
Mike oversees all financial operations at CCW Corp, ensuring the company maintains strong fiscal discipline, accurate reporting, and sound financial strategy as the business grows.
Request a Project Quote
Fill out the form below and our estimator will respond within one business day with a preliminary assessment.
Capital Caulking & Waterproofing Corp
San Leandro, California — Serving the Bay Area and beyond
We respond to all project inquiries within one business day. For urgent bids, please call us directly.