This week's weather might have you thinking you need a new waterproof jacket, but before you splash out on a brand new one - you could save yourself some money by reproofing your old one instead. You can reproof a waterproof jacket in one of two ways: 1. In a washing machine. Choose a specialist technical fabric cleaner with built-in proofing to add to your washing machine. A wash-in waterproofer will coat your clothing during the wash cycle and activate it while air or tumble drying (if suitable - check the label). 2. Use a waterproofing spray after you've washed your clothing. Hang it up and try to get even coverage across the outside of the jacket, taking care to cover the seams. But if you do need to buy a new waterproof jacket? Search 'Best waterproof jackets for 2026' for our top rated coat brands of 2026, with something to fit every budget.