Concrete becomes slippery when wet once a concrete sealer or concrete coating has been added to the surface. For this reason, most concrete surfaces, once sealed, require a grit or tape be added to the surface.
Penetrating sealers on the other hand, don’t leave behind a film or coating and the surface is left untouched, as it was before being sealed. Consider the Armor S2000 or Armor L3000 sealer if you are looking for a penetrating waterproof that will also increase the density of the concrete. For all other solvent based sealers and coatings, consider adding the Armor Non-Slip Additive to leave behind a non-slip surface.
Learn more about concrete sealers.
Non-Slip Concrete Surface Techniques
Non-slip finishes can be achieved through a variety of techniques, including:
Hand Tool Techniques -Troweling is the easiest way to obtain a non-slip surface, but it is probably the least durable. A burlap drag or a stiff-bristled broom are other popular techniques.
Sawing – Sawing is when parallel ridges are sawed into the surface of the concrete.
Abrasive Aggregates – Abrasive grains and aggregates are most commonly used industrial and high foot traffic applications. The two most popular base materials are silicon carbide and aluminum oxide.
Abrasive Strips – Abrasive strips, commonly used for stair-treads and pedestrian ramps, are abrasive strips that can be added to the surface of the concrete or installed into the concrete at the surface.
Epoxy Resin Materials – Epoxy resin materials are typically a 1/4″ textured coating that can be installed to the surface of the concrete.
An anti-skid surface, no matter how effective it is initially will be doomed to failure in the long run if it cannot provide sufficient durability to ensure maintenance of its texture.
There are several factors that determine the length of time that a concrete surface can be expected to provide the desired skid resistance, including:
- concrete mix design
- air entrainment
- type of aggregate
- concrete strength
- type of surface
- weathering conditions
- surface agencies
- surface treatments