Wash a waterproof jacket according to both the garment maker and the fabric system's instructions. The membrane, outer treatment, lining and construction all matter. Cleaning can help maintain performance, but it is not a repair for a damaged membrane or open seam.
Read the exact instructions
Identify the style and any special fabric designation. Empty pockets and prepare closures as directed. Inspect peeling tape, abrasions and damaged zippers. Photograph these before washing so you can distinguish existing damage from changes afterward.
Use the permitted detergent and wash process. Avoid adding softener, bleach or an aggressive stain treatment unless explicitly authorized. A general outdoor-clothing routine may not suit a jacket with unusual construction.
Assess water repellency separately
After the prescribed drying process, check the outer surface. Water beading and the jacket's underlying waterproof barrier are different properties. A fabric that darkens on the outside does not automatically prove that the membrane has failed.
If treatment needs renewal, choose a product compatible with the garment and follow its instructions. Some fabric systems have special exceptions. Do not apply a treatment merely because another jacket benefits from it.
What if water still enters?
Identify where it appears: seam, zip, damaged panel or condensation inside. Cleaning and surface treatment cannot solve every cause. Ask the maker to assess suspected barrier damage. For team garments, keep care instructions tied to the exact model and distinguish maintenance from a warranty or repair issue.
Related reading
Jacket care instructions for team uniforms. For another useful reference, see Waterproof jacket fabric guide.
