Experts in sealants and waterproofing since 1974.

We are a distributor of top of the line Division 3 & Division 7 construction products.
Also, we are the largest foam tape converting facility on the West Coast.

Careers at JLA Supply


Projects Featuring Our Products

We recently changed our corporate name from John Latta Associates to JLA Supply, Inc. Nothing has changed at the branch level.  You will still identify us in the manner you are familiar with:  Sealant Specialists, Seco Supply, or Cascade Concrete Accessories.  The shorter name of JLA Supply, the shorter website domain of, and shorter email addresses are designed to streamline our business and communication for YOU and us.