Safety shoes are consumable items with a finite service life. Every parameter that IS:15298 tests — slip resistance, cushioning, sole adhesion, penetration resistance — degrades over time. A shoe that looks intact may have flat soles providing zero slip resistance, or compressed midsoles providing zero cushioning.
Factors Determining Replacement Frequency
- Daily use duration — double-shift workers wear footwear twice as fast
- Floor surface — abrasive floors (grit, metal shavings, stone) wear outsoles faster
- Chemical exposure — accelerates material degradation
- Outdoor vs indoor — UV, temperature extremes, and rain increase degradation
Recommended Replacement Intervals
| Environment | Inspection | Replacement |
|---|---|---|
| General manufacturing (dry) | 6 months | 12–18 months |
| Heavy engineering, fabrication | 4 months | 8–12 months |
| Chemical processing (PVC) | 4 months | 10–14 months |
| Food processing (high washdown) | 3 months | 10–14 months |
| Construction (outdoor) | 4 months | 8–12 months |
| Logistics and warehousing | 6 months | 12 months |
The Inspection Checklist
- Tread depth below 3mm at heel or ball → replace immediately
- Tread pattern glazed or visibly smooth → replace
- Separation at the sole welt → replace
- Toe box flexes easily under hand pressure → replace
- Midsole feels flat — no cushioning recovery → replace
For annual supply arrangements that eliminate end-of-year scrambles, contact our team to discuss supply scheduling.