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Anti-Slip Additives
Anti-slip additives that are broadcast into or mixed with a floor coating's final layer to add traction. Specified by contractors on ramps, wet areas, kitchens, entryways and any coated floor with a slip exposure.
Anti-Slip Additives
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Broadcast versus suspended, and how coarse to go
Slip resistance is added in the last coat, because the last coat is the one your foot touches. That is the single rule that governs this category, and it is why the decision has to be made before the topcoat is mixed rather than after the floor is finished.
There are two ways to do it. A suspended additive is stirred into the topcoat and stays in the film, which gives even texture but needs stirring during application so the aggregate does not settle in the pail. A broadcast additive is thrown into the wet topcoat and then locked with a final clear pass, which gives a more aggressive and more controllable profile.
Grit size is the trade-off nobody gets to escape. Coarser gives more traction and a harder floor to clean, because texture holds dirt. Finer cleans easily and gives less bite. Match the aggressive profile to the exposure. A ramp, a wash-down area or an entry that sees rain water needs real texture. A showroom does not, and a customer who asked for a slick gloss floor and got sandpaper will not be happy about it.
Sample it before you commit. Coat a board, add the additive at your intended rate, and let the customer walk on it barefoot or in work boots as appropriate. Aggregate type also matters visually, since some materials stay invisible in a clear coat and others cloud it.
Coverage on additives is stated per unit of resin or per square foot, so calculate from the topcoat quantity rather than from the floor area alone.
What to check before you order
- Confirm the additive goes in the final coat, and decide before that coat is mixed
- Choose broadcast or suspended based on how much control over texture you need
- Match grit size to the exposure, since coarse texture holds dirt and complicates cleaning
- Check whether the aggregate stays clear in a clear topcoat or clouds the finish
- Sample the intended rate on a board and have the customer walk on it before doing the floor
Anti-Slip Additives: common questions
How do you make an epoxy floor non-slip?
An epoxy or polyaspartic floor is made slip resistant by adding an anti-slip aggregate to the final coat, either suspended in the topcoat or broadcast into it while wet and locked down with a clear pass. It has to go in the last layer, since that is the surface underfoot.
What grit anti-slip additive should I use?
Anti-slip grit size is chosen by exposure. Coarser aggregate gives more traction on ramps, wash-down areas and exterior entries, but it holds dirt and is harder to clean. Finer aggregate suits interior floors where cleanability matters more than aggressive bite. Sample the rate before committing to a floor.
Can anti-slip additive be added after the floor is finished?
No. Anti-slip additive has to be part of the final coat, so adding traction to a finished floor means abrading it and applying another topcoat with the additive included. That is why slip resistance is decided during specification rather than after the customer walks on it.
Does anti-slip additive change the look of a floor?
Anti-slip additive changes both the texture and often the sheen of a coated floor, usually knocking gloss down toward a satin appearance. Some aggregates stay effectively invisible in a clear topcoat while others cloud it slightly, so sample the exact combination you plan to install.