Overview
ISO 24232:2024 - Protective clothing - Protection against rain specifies performance requirements and test methods for materials and readymade garments intended to protect wearers from precipitation (rain, snow, fog, ground humidity). The standard focuses on the outer shell and lining assemblies of rain protective garments and defines how to assess waterproofness, water vapour resistance, mechanical durability and seam performance. Items explicitly excluded include footwear, gloves and separate headwear, as well as garments designed for impacts other than precipitation (e.g., water splashes, waves).
Key Topics
- Water penetration resistance (Wp): Hydrostatic pressure testing of outer shell materials to confirm waterproofness.
- Water vapour resistance (Ret): Measurement of breathability to balance waterproof performance with wearer comfort and sweat evaporation.
- Mechanical properties: Tensile strength, tear resistance, and bursting strength tests for woven and knitted outer shell materials.
- Seam strength and waterproofness: Assessment of seams and optional testing of complete readymade garments (e.g., rain tower test).
- Pretreatment and conditioning: Procedures for cleaning, abrasion, repeated flexing and fuel/oil exposure prior to testing to reflect realistic use.
- Dimensional change and durability: Evaluation after cleaning; requirements ensure consistent fit and long-term performance.
- General requirements and innocuousness: Construction details (e.g., pocket design to avoid water ingress), secure closures, and compliance with ISO 13688 general PPE requirements.
- Supporting guidance: Annex A (wearing time recommendations) and Annex B (test device for one‑sided fuel/oil exposure).
Applications
ISO 24232 is used by:
- Protective clothing manufacturers to design, test and certify rain garments and waterproof outer shells.
- Textile and material engineers to validate hydrostatic and vapor transmission performance of coatings and laminates.
- Independent test laboratories to perform standardized evaluations and issue conformity reports.
- Procurement officers, safety managers and specifiers who need objective criteria for selecting rain protective clothing for workers in construction, utilities, transport, forestry and outdoor services.
- Regulatory and conformity assessment bodies for labeling, marking and compliance verification.
Benefits include improved user safety and comfort through verified waterproofness, breathability, seam integrity and documented care/marking requirements.
Related Standards
Key normative references and closely related standards cited in ISO 24232 include:
Keywords: ISO 24232, protective clothing, protection against rain, waterproofness, water vapour resistance, rain protective garments, hydrostatic pressure, seam strength, test methods.
