About Us

Who We Are

Waterproofing Associates Inc. has been in the commercial-industrial roofing and waterproofing business since May of 1992, serving the greater San Francisco Bay Area, Monterey Bay and Central Valley. We are competitive in price and superior in our technical skill and service. We are a Union Contractor that is committed to exceeding the expectations of our customers. Give us a call.

What We Do

We specialize in the installation of both commercial and industrial roofing systems including commercial deck coatings, plaza deck systems and below grade waterproofing systems. We have a complete Service Department to address your roof maintenance needs, tenant improvement projects or roof leak concerns

Meet the Team

Steve Nash


Jay Hartung

Vice President

Rob Wyllie

Project Manager

Eileen Wagner

Office Manager

John Ravetti

Project Manager

Eric Moorehead

Project Executive

Mathew Rabong

Project Manager

Randy Carter

Project Manager

Sean McCormick

Project Manager

Kyle Carhart

Project Manager

Juan Landeros


George Timmons


Mike Wilmerding


Jim Vincent

General Service Manager

Kevin Grimes

Service Manager

Jose Orpeza

Service Manager

Jose Zendejas

Service Manager

Matt Mahlke

Accounts Receivable

Maria Mercado

Purchasing Manager

Mark McLauchlan

Accounts Recievable

Jill Aro

Administrative Assistant

Joshua Jones

Contract Administrator

Lorene Fisher

Accounts Payable Clerk

Mike Kessler

Safety Manager

Omar Gonzalez

Equipment Logistics

Alfredo Cruz

Crane Operator

Jose Fraire

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