Sinco Sales Co.
Tim Sinnott
Danville, CA 94506
Phone: (925)570-8884


Manufacturers Representatives for:          

Prosoco, Polytuff, Willseal, Polyguard, Advanced Building Products, and Enduro-Kote



News Page


Welcome to Sinco Sales Co. a manufacturer's representative company based in the San Francisco Bay Area. We sell sealants, waterproofing and concrete repair products to all of the construction trades. We have access to the best construction distributors in California and provide on site sales and technical assistance.  We currently cover Northern California and Northern Nevada.

Quick Links to our websites for technical data and MSDS

Air and Water Resistive Barrier Building Cleaning Solutions Clear Water Repellents Consolideck Polished Concrete Products Masonry Strengthening Systems Anti Graffitti Sealers


Expansion Joints ■ Specialty Joint Sealants ■ Seismic Joints ■ Fire Rated Joints ■ Secondary Seals ■ Parking Garage Joints ■ Road and Bridge Joints ■ Below Grade Joints


Sheet Waterproofing Materials ■ Foundation and Podium Slab Waterproofing ■ Flashing for Masonry Walls Tile Waterproofing Sheet Membrane Wall and Window Flashing Blindside Wall Waterproofing Roofing Underlayment

Polyurethane Deck Coating Systems Tile-Underlayment Waterproofing Systems Liquid Applied Below Grade Waterproofing Polyurea Deck Coating Systems

Mortairvent® Rainscreen Drainage for Exterior Siding, Stucco and Cavity Walls

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Waterproof modified cementitious systems fire rated traffic coatings Decorative Coatings Swimming Pool Deck Coatings


Our Mission

Our mission is to provide concrete solutions for concrete problems, and to professionally provide the assistance you need in choosing a waterproof and or decorative system for your structure.

Company Profile

Sinco Sales Co. was formed by Tim Sinnott in September 2001. Tim's background includes:

  • 1979-Sales Manager for R.S. Hughes the nation's leading 3M distributor, selling adhesives and tapes to the electronic, OEM, industrial and construction markets.
  • 1985-Outside Sales for D.M. Figley, one of the premier construction sealant and waterproofing distributors in Northern California.
  • 1995-Established and opened the Northern California branch of H.A. Lowry and Assoc., a large sealant and waterproofing distributor based in Southern California.
  • 1999-Engineering Services Representative for W.R. Grace, calling on Structural Engineers to promote admixtures for concrete in 4 western states.
  • 2001-Opened Sinco Sales Co. representing Sonneborn then BASF Building Systems
  • 2007-Representing Polytuff Systems International
  • 2008-Representing Polyguard Products
  • 2011-Representing Prosoco
  • 2012-Representing Aquafin
  • 2014 Represnting Enduro-Kote
  • 2015 Representing Advanced Building Products





Contact Information

Mobile Telephone
Postal address
7 Anthurium Ct. Danville, CA 94506


Last modified: 06/27/17