




Sealtek Waterproofing was established in June 2024 by Ismael Soto, a 25-year union professional and graduate of the Bricklayers Local 3 apprenticeship program. With over two decades of field and operations leadership experience managing large-scale commercial and public works projects throughout Northern California, Sealtek was built on a foundation of quality craftsmanship, integrity, and reliability.

Sealtek Waterproofing is a certified SBE and DBE contractor, signatory with the Bricklayers and Glaziers unions, registered with the DIR, and listed on SAM.gov. We are also an ABAA Accredited Contractor and Certified Installer, ensuring proper installation and compliance with industry standards. In addition, Sealtek is CMMC Level 1 and Level 2 compliant, meeting cybersecurity requirements for federal and government projects.

We are committed to delivering union-quality workmanship while maintaining strong safety standards, detailed coordination, and on-time project performance.

Our Products & Services

Sealtek Waterproofing specializes in commercial and public works projects, providing:

"Joint Sealants & Caulking Systems:"
Silicone, urethane, and specialty sealants for expansion joints, control joints, window perimeters, storefront systems, and façade assemblies.

"Air & Weather Barrier Systems:"
Fluid-applied and sheet membrane systems designed to enhance building envelope performance, improve energy efficiency, and prevent air and moisture intrusion.

"Removal & Replacement of Existing Sealants:"
Selective demolition and removal of deteriorated or failed joint sealants on existing buildings, followed by proper surface preparation and installation of new high-performance sealant systems.


At Sealtek Waterproofing, we focus on delivering durable, watertight building envelope solutions that protect structures, extend service life, and ensure long-term performance.





Sealtek Waterproofing

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Sealtek Waterproofing

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