Regulation EN343 Permeability. Technical fabrics. Marina Textil.

EN343

Impermeability protection against rain.

This standard specifies the requirements and test methods applied to the materials and seams of the protective clothing against the effects of foul weather (for example, rain or snow), fog and humidity.

The requirements to be accomplished are:

Property	Standard	Minimum requirements
Resistance to water penetration	EN 20811	Wp ≥ 8000 Pa
Resistance to water vapour	EN 31092	20 < Ret < 40
Tensile strength	ISO 1421	450 N (warp and weft)
Tear strength	ISO 4674	25 N (warp and weft)
Dimensional shrinkage	EN 340	± 3%
Resistance to seams	EN-ISO 13935-2	225 N

The labelling of these garments should show two values, the resistance to water penetration and the resistance to water vapour. These two values are classified in different classes:

Resistance to water penetration Wp	Class
Resistance to water penetration Wp	1	2	3
Materials before the pre treatment	Wp ≥ 8000 Pa	Not necessary	Not necessary
Materials after each pre treatment	Not necessary	Wp ≥ 8000 Pa	Wp ≥ 13000 Pa
Seams before the pre treatment	Wp ≥ 8000 Pa	Wp ≥ 8000 Pa	Wp ≥ 13000 Pa

Resistance to water vapour Ret	Class
Resistance to water vapour Ret	1	2	3
m2 · Pa ———— W	Ret superior to 40	20 < Ret ≤ 40	Ret ≤ 20

<< This pictogram applies for the garments which comply with this standard.