In most cases, the effect of stickers on hard hats does not negatively affect the safety performance provided by the hard hat. The helmet should be removed from service and replaced immediately if any surface cracks, however small, appear on the shell surface, whether or not they are in the vicinity of the stickers.Click to see full answer. Also question is, do stickers weaken helmets?Stickers can hide cracks and other potential damage. Stickers may eliminate electrical resistance (source: Guidance from the US Occupational Safety and Health Administration) Manufacturers cannot be certain that the glue used on the sticker won’t affect the integrity of the material the helmet is made from. can you put stickers on hard hats Australia? The official Australian Standard says that the use of stickers on hard hats is acceptable if they do not interfere with the actual function of the hard hat which is that of protection. Similarly, you may ask, why should you avoid applying decals to your hard hat? Inspections. Hard hats require regular inspections to check for cracks, dents, damage, wear and the like. Stickers can mask the damage or weakness in the shell, causing the person inspecting it to deem the hard hat in good working order when it’s not.What do the colors of hard hats mean?White – Managers, engineers, foremen or supervisors. Brown – Welders and workers for high heat applications. Green – Safety inspector, but occasionally used for new workers. Yellow – General laborers and earth-moving operators. Blue – Carpenters, technical advisers, and temp workers.