Water Vapor Emission Control + Concrete Curing + Flat Floors


VaporSeal 309 is a proprietary formulated concrete curing compound that prevents cracking, flat floors and excessive water vapor emission control during the hydration phase.  After 7 days the VS 309 Membrane begins to dissipate while the penetrant component remains to keep the capillaries open for natural drying.  The membrane completes its dissipating stage at the 30-day benchmark.

Under standard curing, the capillaries begin to choke off as the unreacted salts flow (migrate) to the top of the slab.  The VS 309 acts to keep the salts from being trapped preventing the capillary vents from breathing.  VS 309 dissipates from a reaction with the high alkaline salts. No ultraviolet light is necessary, so the cure will dissipate.

VaporSeal 309 was first introduced by Floor Seal Technology in 1998 at a tech campus in San Jose, CA by real estate developer William Morocco, South Bay Construction and DES architects.  The 100,000 SF building has had several tenants with TI renovations between every tenant change without a failure in over 22 years.  Since 1998 Floor Seal Technology Technicians have applied over 15,000,000 SF of the 309-curing system in CA, WA, OR, AZ, NV, and TX.

Floor Seal Technology warrants that the VaporSeal 309 water vapor emission control + curing was installed properly and below-grade, on-grade and slab on metal decks will meet the floor covering manufactures moisture requirements, including pH, Calcium Chloride tests, and RH Probe testing.

In the event concrete substrates do not meet the flooring manufacturers’ moisture requirements, Floor Seal will remediate the affected areas with the MES 100 epoxy and cement per ASTM F3010 requirements at no charge to the Owner.

The VS 309 is warranted to cover the cost of labor and materials to replace the affected areas where a moisture failure occurs for 15 years.  (see Floor Seal Technology, Inc. warranty)


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VaporSeal 309