Sika Roofing

In 2021, American Hydrotech, Inc. was acquired by Sika Corporation and fully integrated in 2025 as part of the Roofing & Waterproofing division. Hydrotech® Monolithic Membrane 6125® (MM 6125®), a hot fluid-applied, rubberized asphalt for waterproofing and roofing applications, remains the flagship product and foundation to our roofing and waterproofing assemblies. The membrane has been installed worldwide on over 2 billion square feet of roof decks, green roofs, plazas, vertical foundations, reflecting pools and other structures in over 86 countries. MM 6125® is thick, seamless, easy to detail and bonds directly to the substrate. The product has been in the marketplace for 60 years, with an unsurpassed performance history.