Key Resin Company's KEY B-125 HP Decorative Quartz Epoxy Flooring System
We started the project by installing multiple relative humidity tests to measure for moisture in the slab. After passing tests, we proceeded with surface preparation. We start by shot blasting the floor with steel shot through a machine connected to a dust collector. Once blasted, we take hand grinders and diamond grind the edges that the blaster was unable to prepare. This particular floor had multiple areas where the concrete was replaced due to new plumbing and electrical being ran through the floor. We prepare these areas by diamond grinding the edges to ensure that they meet the existing floor level, so that they will not stand out after the floor is installed.
After surface preparation, we installed 1/8" cove termination strips at four inches high. We then proceed with troweling the cove onto the wall. After the cove has hardened, we patch the floor with Key Resin #502 100% solids epoxy primer mixed with fumed silica to thicken it. We overlay four inch fiberglass tape over the joints and large cracks to help prevent them from spreading wider. After patching, we prime the entire floor with Key Resin #502 100% solids epoxy primer. Once the primer was dry, we applied a coat of Key Resin #580 100% solids flexible epoxy as a crack isolation membrane. This will help any existing or new cracks from reflecting through the rest of the system.
The first broadcast of decorative quartz begins with a coat of Key Resin #510 100% solids epoxy binder and then broadcasting decorative quartz to refusal. In the case of Mariemont Elementary, all of the floors used Key Resin's "Storm Cloud" as the quartz color. After sweeping up all of the excess quartz and vacuuming the entire floor thoroughly, we apply a coat of Key Resin #615 100% solids chemical resistant binder and broadcast the quartz to refusal once more. Cleaning up once more, we then apply a grout coat of #615. We then finish the floor with a coat of Key Resin #450 chemical resistant urethane.
See more pictures of this project and others in the Photo Gallery.