Use a chemical-resistant urethane topcoat when the floor will see chemical spills and get cleaned every day: commercial kitchens, food processing plants, warehouses, shops and labs. Versatile's 5375 Chemical-Resistant Urethane is a two-component, high-gloss urethane finish coat built for exactly those floors. It goes on two ways: as the topcoat over a sealed flake system, or as a grind and seal straight on diamond-ground concrete with no primer.
Written by our technical service team for floor coating contractors and installers.
Below are the questions our tech team hears most about 5375, from where it fits in a system to how to get it down right the first time.
Which floors is 5375 best for?
5375 is made for floors that see chemicals and get cleaned every day. That covers commercial kitchens, food processing plants, warehouses, manufacturing facilities, automotive workshops, labs and distribution centers. It's also a good fit for a residential garage that gets used like a shop, where the owner works on cars or stores chemicals.
If you're bidding a flake floor in one of those spaces, ask your customer two things: what gets spilled on this floor, and how often do you clean it? If the answer is chemicals and daily cleaning, finish the system with 5375.
Where does 5375 go in the system?
Two ways. Run 5375 as the topcoat over a sealed flake system, or use it as a grind and seal: diamond grind the slab and roll 5375 straight on, with no primer.
Over flake, the broadcast gives you the look and 5375 is the layer that takes the chemical exposure and the daily cleaning. As a grind and seal, 5375 is the whole system: grind the slab, then roll it on.
What will 5375 stand up to?
In our lab tests, 5375 showed no effect from acetone, xylene, ammonia, drain cleaner, bleach, glass cleaner, motor oil, gasoline, Skydrol hydraulic fluid and hot tires. Ten percent hydrochloric acid, degreaser and vinegar left faint spotting. If a floor will see those three regularly, set that expectation with your customer up front.
What are the key numbers?
All figures are at 75°F.
| Spec | 5375 |
|---|---|
| Mix ratio | 2 parts A to 1 part B |
| Volume solids | 64% |
| VOC | Under 50 g/L, SCAQMD compliant |
| Pot life | 60 minutes (1-gallon mass) |
| Working time | 45 minutes |
| Dry to touch | 1 to 2 hours |
| Recoat window | 6 to 12 hours |
| Full cure | 5 to 7 days |
| Kits | 1.5-gallon and 15-gallon |
How much does a gallon cover?
It depends on what's underneath. Over a smooth surface, plan on 250 sq. ft. per gallon for the first coat at 5.3 mils wet, and 300 sq. ft. per gallon for the second coat. Over a sealed flake system, plan on 175 sq. ft. per gallon over 1/4" flake and 150 sq. ft. per gallon over 1/8" or 1/16" flake. Smaller flake leaves more texture to fill, so it takes more material.
How should I prep the floor?
Diamond grind the surface. For a grind and seal, 5375 goes straight on with no primer. Before you start, test the slab for moisture with a Moisture Test Kit. 5375 needs a moisture vapor emission rate of 3 lbs per 1,000 sq. ft. per 24 hours or less by calcium chloride test. If the slab tests higher, put down a moisture vapor primer first.
Coating over an existing floor works only if the old coating is clean, dry and well bonded. If it's past its recoat window, de-gloss it with an 80 or 100 mesh screen, vacuum and solvent wipe before you roll. Never coat over a floor that's peeling or failing. Remove it, grind back to sound concrete, find the cause and start the system again.
What conditions do I need on install day?
Keep humidity under 65% and don't apply within 5°F of the dew point. Store the material between 50 and 75°F before you mix, and on hot days, ice the pails.
Any tips for mixing and rolling?
Mix one kit at a time, and only what you can apply in 20 to 30 minutes. Spread it at 5 to 7 mils and don't let it puddle. Puddles, high humidity and low temperatures are the usual causes of a hazy finish.
Watch the 5375 install video before the first job to see it go down start to finish. For the why behind the product, watch our 5375 tech talk.
Does 5375 come in colors?
Yes. CRU Pigment Packs come in Charcoal, Cottonwood and Whisper Grey. Add the pack to Part A and mix to an even color before you add Part B. Use CRU Pigment Packs only, since they're the pigment 5375 is made to work with. Use one CRU Pigment Pack pint per 1.5 gallon kit of 5375.
What about slip resistance?
Slip resistance depends on texture, aggregate, conditions and upkeep. For floors that get wet or oily, the install guide calls for an angular aggregate such as Rhino Tooth in the topcoat. Talk through the texture with your customer before the job so the floor matches how the space is used.
What safety steps does my crew need?
5375 is combustible. Shut off ignition sources, ventilate the space and wear an organic vapor respirator. The full steps are in the 5375 install guide.
5375 FAQ
Can I put 5375 straight on concrete?
Yes, as a grind and seal. Diamond grind the slab and roll it straight on.
Can I use it over a flake floor?
Yes. It's an excellent topcoat over a sealed flake system, especially if your customer is actively working on cars.
What sizes does it come in?
1.5-gallon and 15-gallon kits.
How long before the floor is fully cured?
5 to 7 days at 75°F.
Is it low VOC?
Yes, it's under 50 g/L VOC and SCAQMD compliant.
Talk to our tech team
Have a job coming up that sees a lot of activity? Call our technical service team at 214-807-6878, Monday through Friday, 7am to 6pm CT, and we'll help you build the system. When you're ready, shop 5375 kits.
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