UKC

Today was an awkward roped descent, instead of an abseil.  The crampons are sharp enough for ice but too sharp for my trousers. Inside leg just above the ankle bone now has ribbons but no medal.

im wondering what's the Best material for a quick trouser repair.

it would be great to patch with leather like my former geography teacher did with his jacket elbows but it's not available. What's tough and waterproof and can be  glued / sewed to salopettes?

Tough is the main quality I'm looking for.

Tenacious Tape

Al

All the cool cats patch up their crampon-induced rips with gaffa tape.

Gaffa tape for field repairs, tenacious tape or goretex patches when I get home.

Sew the edges together.  Tenacious Tape on one side.  Apply Seamgrip to the wound.  Apply more tenacious tape over that.  If not in a high wear area, just Tenacious Tape will do

Tape the inside of the tear together temporarily with paper masking tape or something removable.

Smear a layer of seam sealer over the outside of the tear generously overlapping the join.  Leave undisturbed on flat surface.

Wait a day and remove tape to leave rugged outer fix.

A  bit of this stuff perhaps?
http://www.pennineoutdoor.co.uk/fabrics/Water-Resistant-Medium-and-Heavywei...

Betrafol tape is by far and away the best repair tape I’ve used. Way more durable than tenacious tape and way cheaper too. You buy it from Ebay.

Duct tape is nothing more than a quick fix.

Thanks all, for your speedy and helpful advice.  It's much appreciated.

 I'd never heard of Tenacious Tape until now.  I will have to get some in when I get back to UK. 

Remember that whatever you use you should round off the corners.  Practically anything will catch and peel if it has a sharp corner on it.

Second that, also you want to heat it a little, especially if your waterproofs are dwp and/or not a shiny finish.

Tenacious tape is nice and it works but a good brand of duct tape is just as strong and neat if you cut it nicely. Gorrilla tape is the strongest I've used but you need to iron it or use a heat gun to get the best results and it is slightly stiffer than tenacious tape when it's cured. You'll never get it off though. The american branded duct tape is good as well, duck brand is too thin.

I’ve always done it the other way round, masking tape or sellotape on the outside, seam sealer on the inside.

The repair is then almost invisible on the outside.

This stuff is the bomb. So sticky!

https://www.ecomerchant.co.uk/pro-clima-tescon-invis-tape-60mm-x-30mtr.html

I use gaffer tape superglued on the inside (use flexible superglue) and seamgrip on the outside. Works well for smaller rips anyway. 

Tenacious Tape works well, and if you're both fashion-conscious with brightly-coloured trousers, it's clear and leaves a near invisible repair.

I’ve just shredded my inside gaitor badly. So duct tape sealed down with tent sealant from gooutdoors. Left to cure should do the trick until I spike them again, note to self don’t spike your bloody legs that high up

Kevlar sail repair tape is hard to beat for durability

Spinnaker tape is pretty good stuff. (Ripstop nylon)Used for fixing sails so you can get it from a yachting chandlers. I got some on ebay...various colours too.