How to wash a ski jacket and ski pants without ruining the waterproofing

How to wash a ski jacket without ruining it is simpler than most people think: close every zip, use a technical cleaner instead of ordinary detergent, skip the fabric softener, rinse well and dry gently. Done right, washing does not harm a waterproof jacket. It helps it. Dirt, sweat and sun cream clog the fabric, and a clean shell sheds water and breathes better than a dirty one. This guide covers jackets and ski pants with a membrane, down jackets, when to wash, how to bring back water repellency and how to store everything for summer.

Before anything else: check the care label on your piece. It is the only instruction written for that exact fabric, filling and trim. Everything below is general industry guidance, and where the label says something different, follow the label.

Why washing a ski jacket protects the waterproofing

A waterproof ski jacket usually has two lines of defence. The first is the membrane or coating inside the fabric, which stops liquid water while letting sweat vapour escape. The second, on many jackets, is a water-repellent finish on the outer fabric that makes water bead and roll off. We explain how membranes and ratings work in our guide to waterproof ratings.

Both suffer from dirt. Body oils, sweat salts and sun cream build up on the inside and outside of the fabric. When the outer face gets dirty, water stops beading and soaks the surface instead, a state often called "wetting out". The jacket may still keep rain out, but it cannot breathe, so you feel damp from the inside. Washing removes that layer and gives the fabric back its job.

How to wash a ski jacket, step by step

This is the general method most outdoor brands and care-product makers describe for synthetic shells and insulated jackets. Check the care label on your piece for temperature, cycle and whether it can go in a machine at all.

1. Empty every pocket.
2. Close every zip and fastening. Main zip, pocket zips, vents and hook-and-loop cuffs. Open zips and Velcro can snag and abrade the fabric.
3. Remove what comes off. A detachable hood, a removable snow skirt or a goggle cloth, if the label says to wash them separately.
4. Clean the detergent drawer. Residue from normal powder or softener can end up on your jacket.
5. Use a technical cleaner. Choose a wash made for waterproof and technical fabrics. Ordinary detergents and softeners can leave residues that attract water and reduce breathability.
6. Never add fabric softener. It coats the fibres and works against both breathability and water repellency.
7. Pick a gentle cycle. A synthetics or delicate programme, at the temperature on the care label, with a gentle spin.
8. Rinse twice. An extra rinse cycle removes cleaner that would otherwise stay in the fabric.
9. Dry as the label says. Some labels allow a low tumble dry; others say hang to dry. Never put a jacket on a radiator or near a fire.

Washing ski pants and ski suits

Ski pants follow the same method. Before washing ski trousers, close the leg zips and the waist, fasten any hook-and-loop adjusters and brush off dried mud from the snow gaiters and hems. Reinforced edges are there for a reason; they take the scuffs from ski edges, so check them for cuts while they are clean.

A two-piece suit can go in together if the label allows and the machine has room, but jacket and pants wash better apart. An overcrowded drum does not rinse properly.

Some pieces carry an odour-control treatment in the lining. The Vista Tech 2L Insulated Ski Pant Women, for example, has a Polygiene antibacterial, deodorising lining. Odour control helps between washes; it does not replace washing when the fabric is dirty.

Different fabrics, different care

Ski jackets are not all built the same, and the build changes how you care for them. Here are five types from our range, with what each product page states. In every case, check the care label on the piece itself.

How to wash a down ski jacket

Down needs its own approach. Ordinary detergent strips the natural oils that let down clusters loft and trap warm air. The general advice is:

• Use a cleaner made for down.
• Wash on its own, on a gentle cycle, as the care label says.
• Rinse well, then spin gently to remove water.
• Dry slowly and completely. If the label allows tumble drying, a low heat with two or three clean tennis or dryer balls helps break up clumps. If not, lay it flat and shake it out every few hours.
• Do not store it until it is fully dry. Damp down clumps and can smell.

Down jackets need washing less often than shells. Spot-clean small marks with a damp cloth and save the full wash for the end of the season.

How to restore water repellency

If water no longer beads on your clean jacket, the outer finish may need help. Industry guidance follows three steps:

1. Wash first. Reproofing a dirty jacket seals the dirt in. Many finishes recover from cleaning alone.
2. Apply gentle heat, if the label allows. Care-product makers often say heat helps reactivate an existing water-repellent finish. A low tumble dry or a cool iron through a cloth are the usual methods. Only do this if the care label on your piece permits it.
3. Test. Sprinkle some water on the shoulders and forearms. If it beads and rolls off, you are done. If it soaks in, reproof.

Reproofing products come as wash-in or spray-on. The general rule: wash-in suits shells with no insulation; spray-on suits insulated jackets, because it treats only the outer face and leaves the lining and filling alone. Follow the instructions on the product you choose; some apply to a damp jacket, some to a dry one.

How often should you wash a ski jacket?

There is no fixed rule, but these are common signs it is time:

• Water no longer beads on the outer fabric.
• The jacket feels damp inside after skiing, even on a dry day.
• You can see marks on the collar, cuffs or pockets, or it smells.
• The season has ended. A wash before storage removes sweat and sun cream that would otherwise sit in the fabric for months.

For most skiers, one or two washes a season is enough.

Storing ski clothes for the summer

• Store only when clean and completely dry.
• Hang jackets on a wide hanger in a cool, dry, dark place. Avoid an attic that gets hot.
• Keep down jackets loose. Do not leave them compressed in a stuff sack for months.
• Use a breathable cover rather than a sealed plastic bag.
• Leave zips closed to keep the shape, but not cinched tight.

While the jacket is clean, check the parts that keep you safe and dry: zips, cuffs, the hood and, if your jacket has one, the RECCO reflector. We cover what a reflector does and does not do in what makes a ski jacket safe.

How to wash a ski jacket: frequently asked questions

Can you put a ski jacket in the washing machine?

Most synthetic ski jackets can be machine washed, but check the care label on your piece first. Close all zips, use a technical cleaner, skip fabric softener and choose a gentle cycle with an extra rinse.

Can I use normal detergent on a waterproof jacket?

It is best avoided. Ordinary detergents and fabric softeners can leave residues that reduce breathability and water repellency. A cleaner made for technical or waterproof fabrics is the general recommendation.

Does washing a ski jacket ruin the waterproofing?

Not when it is done correctly. Dirt and body oils are what reduce performance. Washing as the care label says usually helps the fabric shed water and breathe again.

How do I know if my ski jacket needs reproofing?

Wash it first, then sprinkle water on the shoulders and forearms. If the water beads and rolls off, it does not need reproofing. If it soaks into the outer fabric, apply a wash-in or spray-on reproofer.

How often should I wash my ski jacket?

For most skiers, once or twice a season, and always before summer storage. Wash sooner if water stops beading, the jacket feels damp inside or it smells.

Washing and reproofing guidance in this article is general industry advice from outdoor retailers and care-product makers, not TITTALLON-specific instructions. Always check the care label on your piece. Product details: TITTALLON product pages.