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Selecting the right peened grab bar or knurled grab bar depends on your specific facility needs. The former uses media blasting to create a uniform, non-abrasive non-slip finish that cleans easily and satisfies ADA requirements. Meanwhile, the latter one features deep cross-hatched grooves that offer intense mechanical grip but demand more effort during daily sanitation.
This guide helps facility managers, builders, and safety procurement officers select the right grab bar surface texture, such as those from Interhasa, for commercial and residential installations. Explore our full commercial hardware line on our safety rails catalog ou contact us to request a custom quote today.
The peened finish consists of a microtextured surface achieved by mechanical impact. Beads are shot at stainless steel tubing under pressure. The process causes dents on the surface but does not chip any material away. It results in a slip resistant grab bar finish while maintaining smooth contours. Additionally, it has tactile friction without any roughness or grooves.
The sandblasting or bead-blasting process entails firing of either glass or ceramic beads onto the stainless steel material. The treatment ensures that tiny holes are created thus breaking surface tension upon becoming wet.
The outer surface of the material is then hardened due to cold working. This provides strength and avoids abrasion of the skin during daily use.
A knurled surface consists of diamond shapes that are cut straight into the metal tube. In industrial manufacturing, these diamond patterns are pressed into the steel using lathes. In this way, the mechanism physically changes the profile of the grab bar. The mechanical friction points for hand placement are then created from this process.
Knurled textures use deeply etched cross-hatching lines to divert water away from the hand. The physical lines bite into the skin to stop the person from slipping. Unfortunately, these deeply etched lines provide very narrow gaps in which soap build-up, scale, and bacteria form. More effort is required by scrubbing these recesses to maintain proper hygiene.
Selecting the right texture requires balancing wet friction against skin comfort and cleanability. Both styles increase friction compared to smooth, polished stainless steel tubing. A peened vs knurled grab bar evaluation highlights key structural trade-offs.
| Performance Feature | Peened Surface | Knurled Surface |
| Wet Friction Level | High (Uniform matte friction) | Very High (Mechanical ridge grip) |
| Skin Comfort | Smooth, non-abrasive | Rough, high-tactile bite |
| Cleaning Effort | Low (Wipes clean quickly) | High (Requires detailed scrubbing) |
| Bacterial Resistance | Excellent (No deep crevices) | Moderate (Grooves trap debris) |
| Conformité à l'ADA | Fully Compliant | Fully Compliant |
The commercial facilities have to maintain a balance between slip resistance and the costs of sanitization and labor needs. The cleaning team has to sanitize the safety equipment every day with standard disinfectants.
The peened textures consist of smooth dimples which do not retain any kind of dirt or soap deposits. Therefore, the janitors clean the peened bars with microfiber towels and sanitizers.
Meanwhile, the knurled textures consist of grooves which retain water, limescale, and skin oil deposits. The cleaning crew has to use a hard-bristled brush to remove the trapped contaminants inside the diamond patterns.
The operational environment determines which surface texture will yield optimum results in the long run. One should take into account the abilities of the users, maintenance requirements, and exposure to moisture when buying safety equipment.
Healthcare institutions, hospitals, and nursing homes consider hygiene just as important as fall safety.
Skin sensitivity in the older generation may result in tearing when holding knurled patterns with force. Peened finishes offer high friction without damaging sensitive skin. Micro-bead finishes prevent the formation of any hiding places for harmful hospital microorganisms from cleaning chemicals.
Designed specifically for hospitals, nursing homes, and senior care centers. Features a micro-bead peened finish that provides superior wet grip without tearing sensitive skin. Crevice-free design allows effortless daily wipe-downs and bacteria prevention.
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Restroom facilities in airports, schools, and offices often face heavy foot traffic and different maintenance schedules. Commercial codes require accessible facilities to have non-slip grab bars.
The peened surface manages wet environments and makes cleaning easier for janitors. Facility managers save on labor expenses while consistently adhering to commercial safety codes.
Engineered for demanding public facilities like airports, office complexes, and educational institutions. Combines robust load-bearing support with low-maintenance finish options, helping facility managers meet commercial safety codes while minimizing janitorial labor costs.
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