Waterproof Answers · Wash, Reproof & DWR
Independent, UK-focused guidance on wetting-out, wash-then-reproof, and Nikwax vs Granger's. Not a retailer care card, and not a proofer brand's PDF.
Three questions worth answering in order — before you bin a £300 shell, or spray proofer onto a dirty membrane.
Wetting-out, a dead membrane, seam-tape peel and tent condensation are different jobs. Start with the diagnostic, not a care-card how-to that six shops already own.
Wash then reproof. Nikwax vs Granger's is a fabric-and-job call, not a brand loyalty test. Down is a different bottle again.
A bottle of tech wash is cheap. A new shell is not. The honest breakpoint is a membrane that no longer breathes, not a DWR that just needs a wash.
30 guides covering the practical decisions UK kit owners actually face — wetting-out, chemistry, membranes, down, and tents.
Why a shell soaks through, wetting-out vs a failed membrane vs condensation, and what you missed after a reproof that did nothing.
See the guides → 🧪Nikwax vs Granger's, wash-in vs spray-on, Tech Wash vs detergent. The page the brands will not write for each other.
See the guides → 🧥DWR vs membrane vs coating, UK 30 °C cycles, tumble-dry reactivation, and why fabric softener is a bad idea.
See the guides → 🪿A different chemistry to DWR. Drying without clumping, down wash vs Tech Wash, and the sour-smell trap.
See the guides → ⛺Flysheet leak vs condensation, groundsheet vs fly, rucksack DWR. Fabric care, not a nights-out camping guide.
See the guides → 🥾Leather wax vs proof, overtrousers, kids' waterproofs, gloves, and storing kit so it does not die in the cupboard.
See the guides →Search "how to wash a waterproof jacket" and you land on Mountain Warehouse, Cotswold, Rab or Alpkit. Search wetting-out or Nikwax vs Granger's and you get UKClimbing threads and a couple of brand cards. Nobody neutral owns the chemistry.
Waterproof Answers exists to be that voice. Every guide reasons from how DWR and membranes actually fail — not a retailer's care PDF. We do not generate fake before-and-after beading photos, and we do not pretend a spray-on on a dirty jacket is a wash.
The order of operations worth having sorted before you spray anything — so you do not seal dirt into a membrane or bin a jacket that only needed a wash.