Waterproofing a SAS Smock?

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Forest fella

Full Member
Jul 2, 2008
2,587
153
Gloucestershire
A neighbour just asked me if I knew of a Good Method / Product to waterproof his Smock, I told him get a Gore-tex / wet gear or a poncho but he's looking for a Spray or something?.
Any idea's
cheers
 

Wildgoose

Full Member
May 15, 2012
515
198
Middlesex
I’ve used Nikwax wash in before and grangers spray on/pump. Both improved the water resistance of a wind proof smock but neither made it properly waterproof
 

packalot

Member
Feb 18, 2020
21
17
Alba
+1 on the Fabsil. used it on a clapped-out British DPM smock and it made it nicely water resistant. certainly not water proof, but it gave the old thing a good second life insofar as my needs go.

i've since been in touch with the Granger folks -- makers of Fabsil -- and they told me that i should have used their Fabsil Gold which is apparently formulated for garments whereas the vanilla Fabsil is for tarps and tents and suchlike.
 
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Erbswurst

Bushcrafter (boy, I've got a lot to say!)
Mar 5, 2018
3,087
1,208
Berlin
I would use a cotton tent impregnation.
But it washes out.

Why doesn't he buy a new old stock Austrian army Goretex jacket for 50 €?

They suddenly throw them behind you every corner.
"Bundesheer Feldjacke, leicht, M75."
Looks like US army M65.
 

John Fenna

Lifetime Member & Maker
Oct 7, 2006
22,306
1,833
64
Pembrokeshire
I make my own cotton smocks and either use Fabsil or Nikwax Rug Proof (I need air curing as I do not have a tumble drier...)
Both make a big difference to water resistance without adversely affecting drying times.
I was caught in a 20min snow shower today in one of my Rug proofed smocks today and stayed bone dry.PB150003.JPG
 

Silverclaws2

Nomad
Dec 30, 2019
286
152
53
Devon
Well I waxed mine with the home made 'Greenland' wax, to report it works and works well.

The smock can be kind of stiff when it's just been waxed and when it's cold, but wearing it soon eases that up and if it's got any 'decoration' on the smock like say camouflage well the wax does tend to make the colours darker.

The first I tested it to be pleased with the waxing was whilst high level walking in a rainstorm of which was coming in sideways, to find no wind nor damp came through to consider the wax not only stops water but makes the garment more windproof.
 
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John Fenna

Lifetime Member & Maker
Oct 7, 2006
22,306
1,833
64
Pembrokeshire
nice work! i'd like to have a go at a project like that. do you have a pattern you can share or point me to?
Thank you :) I actually make my own patterns, cut specifically to my own size and shape so have no pattern to share per se ...
However there may be something of interest to you here.... https://bushcraftuk.com/community/t...activities-clothing-facsimile-edition.117324/

My apologies to the OP for the hijack :)

I have also made my own "Greenland Wax" 50/50 parafin wax and bees wax and used that to good effect but find it makes things a bit stiff if you over do it - it is difficult to over do Fabsil or Nikwax wash in :)
 
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TLM

Native
Nov 16, 2019
1,946
902
Vantaa, Finland
There is a choice to be made, water repellent or water impermeable. They are really two different things, about all sprays and other surface treatments cause repellency, waxes -depending- cause both.

Repellants are low surface energy substances which cause water to form easily movable drops on the surface. They mostly also let the fabric breath fairly well.
 

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