EN 343

Protective garments against wet weather

Replaces EN 343: 2003 + A1 2007

  • Water penetration resistance (WP) and water vapour resistance (RET) are essential properties
  • The materials, seams and design of protective garments are all tested

Field of application:

Protection against wet weather: i.e. rainfall or snow.

The standard does not apply to conditions other than precipitation i.e. water spray or waves.

Performance tests

Property Outer layer Waterproof or thermal insert Lining
Water penetration resistance (before/after pre-treatment) X X
Water vapour resistance X X X
Traction resistance X (fabrics)
Tear resistance X (weaves)
Resistance to bursting X
Dimensional variations X X X
Seam resistance X

Water penetration resistance

WP Class 1 Class 2 Class 3 Class 4
Outer layer Before pre-treatment ≥ 8 000 Pa
Outer layer After each pre-treatment ≥ 8 000 Pa ≥ 13 000 Pa ≥ 20 000 Pa
Seams in X before pre-treatment ≥ 8 000 Pa ≥ 8 000 Pa ≥ 13 000 Pa
Seams in X after pre-treatment by washing ≥ 20 000 Pa

The water column states the pressure the garment should be able to withstand: the higher the water column, the more resistant the garment to water pressure

EN 343 EN 343 resistance

Water vapour resistance

The RET water vapour resistance for all layers of the garment must be consistent: the lower the RET rating, the greater the breathability

RET Class 1 Class 2 Class 3 Class 4
M² x Pa / W RET > 40 25 < RET ≤ 40 15 < RET ≤ 25 RET ≤ 15

EN 343: 2007 reminder

RET Class 1 Class 2 Class 3 Not planned
M² x Pa / W RET > 40 20 < RET ≤ 40 RET ≤ 20

Outer layer resistance to traction

No change: minimum 450N value and not including any materials which stretch more than 50%

Outer layer tear resistance

Reduction in minimum value: Drop from 25 N to 20 N

Outer layer resistance to bursting

Not tested in previous version is now:

Minimum 100 kPa for a 50cm2 test sample

Minimum 200 kPa for a 7.3cm2 test sample

Dimensional variations

No modification for woven materials, treated or laminated (3% maximum)

Seam resistance

Reduction in minimum value: Drop from 225 N to 200 N

Marking

EN 343

X: Water penetration resistance class (1-4)

Y: Water vapour resistance class (1-4)

R: Optional: Ready-to-wear garment tested under a rainfall simulator

X replaces R if the garment has not been tested

Recommended working minutes

Effects of water vapour resistance on maximum continuous wearing time in minutes for a complete suit, consisting of jacket and trousers without thermal lining

Temperature °C

° C

Class 1 Class 2 Class3 Class 4
25 60 105 180
20 75 250
15 100
10 240
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