How effective is acid etching of a surface and how long does it last?

The efficacy of anti-slip treatments will vary depending on the nature of the treatment, application, surface, and usage.
Surfaces can be made anti-slip through the use of etching (with or without acid), coating, or mechanical abrasion. There are benefits and drawbacks to different methods and it is recommended that expert advice is sought. Some UKSRG members have expertise in this field.
A reputable anti-slip provider will be able to support their product performance with appropriate pendulum testing. It is likely that for any anti-slip surface to be maintained in the long term frequent effective cleaning will be essential. Always ensure that the manufacturer’s guidance is followed when considering surface treatments.