Best waterproof treatments for your cycling jacket: rated and reviewed

The best waterproof treatments for cycling jackets will help repel the rain to better help your jacket from wetting out in the heaviest downpours, keeping you drier and more comfortable.

It's a fact you don't want to hear, but even the best waterproof cycling jackets and the best waterproof cycling trousers will begin to work less effectively over time. That’s largely down to surface dirt or abrasion stopping the durable water resistant (DWR) layer on the outer surface working as intended, and to sweat and oils clogging the pores of an internal membrane barrier.

It's an issue with any waterproof cycling jacket, but particularly with the best commuter cycling jackets, where the high level of traffic can quickly throw up a lot of dirt onto you and your jacket.

To restore a lot of the effectiveness, it's best to wash the waterproof item of clothing with a technical cleaner. Standard laundry detergents won’t cut it because they leave residues on your jacket, causing the DWR layer to wet out. They might even strip it off altogether.

We have an in-depth explainer on how to re-waterproof your cycling kit further down below. Right up next we have the best reproofing agents that we've tried and tested here at Cycling Weekly. 

The best waterproof treatments for your cycling jacket

Getting your jacket clean is key to making it stay dry. Nikwax's Tech Wash and TX.Direct wash and re-proofer work together to do a really good job at both. Just put your jacket in the washing machine with first the wash and then the re-proofer and leave to dry. Unlike other re-proofers you don't need to tumble dry to activate saving you money and hassle.

Nikwax has performed really well on a range of different fabrics with varying levels of dirt. Spot cleaning before washing and using the Spray-On re-proofing treatment has really enhanced the quality of the re-proofing on even the dirtiest and most worn bits of our tester's jackets. 

Read more: Nikwax Tech Wash and TX.Direct full review

Grangers Performance Wash is designed to use in a washing machine on a standard 30C or 40C cycle. Since you only need to use 25ml per wash, it's reasonably economical, particularly if you buy the one litre eco refill pack.

It's effective at stopping both waterproof garments like Gore-Tex shell jackets and softshell products like Castelli Nanoflex from wetting out and so keeps them working well, although the treatment doesn't seem to last as long as the box-fresh water repellency - which is generally true of cleaners and reproofers and isn't unique to Grangers products.

Read more: Grangers Performance Wash full review

This product from Endura cleans your jacket and re-proofs it in one step, saving time and effort - the process was very simple. All you have to do is fill two caps full of the liquid, pop it in the washing machine with the garment and hit start on a full cycle as you would with regular detergent. Once the garment has been washed, you’ll need to tumble dry it or (lightly) iron it to activate the waterproofing. If nothing else, using a hairdryer to speed up the drying process is another option.

We tested this on an old, well-loved jacket, which would previously get saturated immediately in the rain. Back when the jacket was new, water would bead onto the jacket. Now, since re-proofing, the jacket has almost returned to the level of waterproofing it initially boasted – a real transformation and every bit worth the price of the bottle.

Read more: Endura Cleaner and Re-Proofer full review

How to re-waterproof your cycling jacket

Re-waterproofing your technical cycling kit should usually be a two-stage process and we explain how best to keep your kit in tip-top condition, and what the best waterproof treatments are.

We've more details on how to re-waterproof your cycling jacket here.