Freezer Workwear

EN 342 vs EN 14058: Which Standard Do You Need?

EN 342:2004 covers clothing designed for environments below -5°C, from cold stores at -25°C through to deep-freeze facilities reaching -40°C or lower. The standard tests four parameters: thermal insulation with motion (measured in m2.K/W), optional thermal insulation without motion, air permeability (rated 1-3, where 1 is most breathable), and optional waterproof penetration (1-2). Higher thermal insulation values mean better protection. A (B) marking indicates the garment was tested with thermal undergarments, which must be worn for the certification to apply.

EN 14058 is for moderate cold protection, typically above -5°C in chillroom environments. It's suitable for lighter tasks where full freezer-grade insulation would cause overheating. Both standards require third-party testing under the European PPE Regulation (EU) 2016/425. The most common specification mistake? Choosing EN 14058 for true freezer work below -5°C, or over-specifying EN 342 for warmer environments where mobility matters more than maximum insulation.

The Three-Layer System and Material Technology

Effective cold protection relies on layering: a moisture-wicking thermal base layer to keep sweat off your skin, an insulating mid-layer like heavy fleece for warmth, and a certified outer shell (freezer jacket or thermal coverall) that blocks wind and meets EN 342 or EN 14058 standards. Modern freezer workwear uses 3M Thinsulate, which traps warm air using ultra-fine microfibres while maintaining flexibility. Unlike traditional insulation, Thinsulate stays effective even when exposed to moisture from condensation or moving between temperature zones.

Complete protection requires more than just a jacket. Thermal trousers or waterproof bib brace trousers prevent heat loss through your legs. Freezer boots like the Dunlop Purofort Thermo Plus or Dunlop thermal wellies provide foot insulation rated to -50°C. Accessories – fleece balaclavas, thermal long sleeve vests, and freezer gloves – are essential for preventing frostbite during extended shifts.

Fit, Sizing, and Common Mistakes

Fit directly affects thermal performance. Freezer suits and thermal coveralls that are too tight restrict blood circulation and reduce the insulating air layer between you and the garment. Loose clothing allows cold air to penetrate, defeating the insulation. When sizing, account for the base and mid-layers you'll wear underneath – EN 342 certification assumes you're layering correctly.

The reality? Many buyers focus only on the outer garment's temperature rating and ignore the complete system. A certified freezer jacket won't prevent hypothermia if you're wearing inadequate footwear or no thermal base layer. Check individual product listings for exact EN 342 thermal insulation values, air permeability ratings, and whether the garment was tested with undergarments (B marking). For Dunlop thermo wellies and insulated wellingtons, verify the specific temperature rating – not all thermal safety wellington boots are rated to the same depth-freeze standard.

Use Cases and Suitability

This collection suits food production cold stores, pharmaceutical refrigeration facilities, logistics freezer warehouses, and any operation where workers spend extended periods below -5°C. Lightweight options work for chillroom picking and packing; heavy-duty freezer jackets and thermal coveralls are for deep-freeze blast rooms and long-term cold storage. Pair Gore-Tex work boots with thermal liners for environments where you move between wet and frozen zones. The key: match your protection level to your actual exposure time and temperature, not just the coldest spot in the facility.