How Waterproof are Rucksack Covers?

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Feb 15, 2011
3,860
2
Elsewhere
First of all, rucksack covers only protect the front, top & sides of your bag........ secondly, not all covers are equal when it comes to being waterproof, some are barely showerproof.
I personally think the best way of keeping your kit dry, is either dry sacks or a large rucksack waterproof liner ( a bin bag works fine) & for keeping a rucksack dry, throw the back of your poncho ( if you have one) over the bag.
I don't really trust these covers for anything other than April showers but my experience of them is limited, but is anything really waterproof in heavy, prolonged rain or under a violent thunderstorm ?
 

Retired Member southey

M.A.B (Mad About Bushcraft)
Jun 4, 2006
11,098
13
your house!
Just to add , i had a cheapish tesco 40 litre pack with a rain cover stored in a little pocket in the base, i used the pack on a three day ride to Scotland from Plymouth, through some very heavy rain, both stuck in trafffic and at speed, even though i had everything inside in a dry bag, the inside of the pack was never wet, BUT the coating on the rain cover degraded after about 2 years and would need reproofing again if i hadn't of spilt chain oil all over the pack and binned it.


Rum or Ganja ?

no rum on a school night, and I'm not a waste of atoms so the second doesn't apply.
 
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Bushwhacker

Banned
Jun 26, 2008
3,882
8
Dorset
It's only my sleeping bag and spare clothes that need to be kept dry so it's a case of putting that inside my goretex bivvy and wrapping it up.
 

EastSussexScout

Tenderfoot
Feb 27, 2010
64
0
Brighton
I used a Berghaus freeflow 20 when i did a 60 mile endurance hike across the south downs and never bothered with dry bags etc. the cover worked perfectly and didn't flap around in high winds if it's fitted properly. as for water getting into the back of the bag, your back tends to stop any water getting in, i suppose with the freeflow, that airgap is a bonus for keeping the rain out. i guess it just depends on the individual bag as to how effective they are, if you're in doubt you could always pick a rainy day and take it for a test run.
 

SimonM

Bushcrafter (boy, I've got a lot to say!)
Apr 7, 2007
4,015
6
East Lancashire
www.wood-sage.co.uk
I pack all my gear in different coloured dry bags. If I know I'm doing river crossings (not so often these days!) the whole lot goes in a big dry bag too.

The bags make setting up easier too , as I know which bag has what in it.

Simon
 

Martin-123

Member
Jul 1, 2011
46
0
Essex
I'm planning a trip to Iceland so need to prepare for heavy storms.

I was trying to avoid bringing a dripping wet sack into my tent, but I can leave it under the fly and just accept that things are going to get a bit wet.

I'm going to accept your advice and go with, probably, the bivvi bag method as this involves no extra kit or expense. I suppose I could use the bivvi as a pack liner. Fold the bottom 2/3 of it into the sack and put all my stuff (Tent, sl bag, clothes & food) inside it, then fold over the top and close the sack. Side pockets can be plastic bags if necessary.

Thanks to all for your input. (I enjoyed thinking about the Packa!)

Mart.

There's no substitute for experience.
 

PDA1

Settler
Feb 3, 2011
646
5
Framingham, MA USA
+1 on lining your pack with a bin bag or similar. However, it is also important to keep the pack itself dry. AS the material becomes saturated, it will gain weight - a lot of weight. I have'n't done an experiment, but I suspect that a 3 lb pack could become a 10 lb pack in short order. Easy enough to make a shaped pack cover with drawstring/elasticated sides out of 2 mil plastic.
 

Beardy Adam

Tenderfoot
Sep 7, 2010
96
0
West Yorkshire
I have used the standard orange rain cover that came with my Lowe Alpine TFX Expedition rucksack, and even in the most heavy and prolonged rain it never once let any water through. After taking some abuse, to the eye the water did not appear to bead up and run off as it did when brand new, so it wetted out, but it still kept my rucksack dry. Of course, the benefit of them is also that they dry quickly and weigh little. I have never used a rucksack liner, nor would I for a large rucksack, I remember I once picked up a rucksack liner for a 60l rucksack and it weight 800g! Something to perhaps consider if you are trying to lighten the load.
 

Teepee

Bushcrafter (boy, I've got a lot to say!)
Jan 15, 2010
4,115
5
Northamptonshire
Pack covers are well worth getting and using for me. Whilst all my kit goes in silnylon stuff sacks, I still like to keep the rain off the pack and the cover helps stop my UL pack getting damaged on rocks/thorns to boot. I find it handy to keep on the pack at night to be able to leave it on the floor without getting wet.
 

Lynx

Nomad
Jun 5, 2010
423
0
Wellingborough, Northants
Sorry to butt in but on the same theme how do waterproof sprays work on canvas backpacks? Anyone have any experience? I have been thinking of buying a cover also but if spraying helps then I will do that.
 

Limaed

Full Member
Apr 11, 2006
1,293
70
48
Perth
Rucksacks covers are horrible things, dry bags are the answer. They're not as expensive as you might think:

http://cgi.ebay.co.uk/Dry-Sack-125L...aultDomain_3&hash=item3a6724351a#ht_561wt_905
http://cgi.ebay.co.uk/Dry-Sack-45L-...aultDomain_3&hash=item3cb9ab0a06#ht_504wt_905

However if you want to save the expense of these you can get very heavy duty rubbish bags from builders merchants, they make good sack liners. If you take two you can store your wet bag in the spare. I'm not convinced about using your Bivi Bag, it ll work for a while but will at some point wet out and leak.
 

Martin-123

Member
Jul 1, 2011
46
0
Essex
Sorry to butt in but on the same theme how do waterproof sprays work on canvas backpacks? Anyone have any experience? I have been thinking of buying a cover also but if spraying helps then I will do that.

No problem Lynx. It's a good question.
 

Martin-123

Member
Jul 1, 2011
46
0
Essex
Rucksacks covers are horrible things, dry bags are the answer. They're not as expensive as you might think:

http://cgi.ebay.co.uk/Dry-Sack-125L...aultDomain_3&hash=item3a6724351a#ht_561wt_905
http://cgi.ebay.co.uk/Dry-Sack-45L-...aultDomain_3&hash=item3cb9ab0a06#ht_504wt_905

However if you want to save the expense of these you can get very heavy duty rubbish bags from builders merchants, they make good sack liners. If you take two you can store your wet bag in the spare. I'm not convinced about using your Bivi Bag, it ll work for a while but will at some point wet out and leak.

Those dry bags look the business but too heavy for my liking.

Re bivi "... will at some point wet out and leak" ... Am I showing my lack of experience here? Why would it leak if it's waterproof?
 

Martin-123

Member
Jul 1, 2011
46
0
Essex
Pack covers are well worth getting and using for me. Whilst all my kit goes in silnylon stuff sacks, I still like to keep the rain off the pack and the cover helps stop my UL pack getting damaged on rocks/thorns to boot. I find it handy to keep on the pack at night to be able to leave it on the floor without getting wet.

One or two people are coming out in favour of them now...

So which pack cover do you use Teepee?
 

tiger stacker

Native
Dec 30, 2009
1,178
40
Glasgow
Canoe bags inside waterproof cover outside, there are lighter more flexy bags on offer. Depends what you are carrying though, the disadvantage of living out of a bergen is you bag everything up inside to avoid wetness spreading. Rubble bags are a excellant alternative to dry/canoe type bags. I own two covers for two different bags. On there own they are fine, however being Scotland rain will get everywhere.
 

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