Been raining heavily all day today at home – got me thinking about my dry bags, would they keep my down sleeping bag and jacket dry if I was backpacking in really dreadful weather ? – Yes, I am that bored today !
I thought the easiest way would be to put some water in the two brands of dry bag I have and see if water leaks out of them. I have 2 Pod ultra light dry sacks and 2 Alpkit airlok dry bags. On the Pod website it states: Ultralite, waterproof Nylon stuffsac with roll top closure. Ideal for packing and organising outdoor kit in potentially wet environments when the grams count.
Alpkit site : Airlok waterproof bags are ideal for keeping your stuff dry when crossing rivers, sneaking around in Amazonia or kayaking off Newfoundland.
All four sacks leak around the taped seams, some less than others. I noted that the material did not leak just the taped seams I not sure whether this is a fair test and whether you can relate this to the real world of backpacking in heavy rain.
I guess you would not usually have that sort of water pressure on the seams in normal usage.
My next test was to put a dry cloth into the bag, place the bag into the sink, run water on the bag and allow to stand for 2 and 5 minutes in the water. In fairness to Pod, it does state on the label waterproof where the bag is not submerged. After the last test, I fully expected the cloths to be wet when I took them out.
However, at two minutes, all the cloths were dry in both brands of dry bag. After 5 minutes there was some small damp patches on all the cloths. A fairly stiff test to past as they are not dry bags in the sense of sailing bags.
So after this I placed an item of clothing in each brand of dry sack, put them into my OMM Jirishanca and hosed the backpack down from all angles for 5 minutes with a garden hose. Results no moisture on any of the clothing contained in the dry bags.
As I tend to be a belt and braces sort of chap, and I did note some seepage when the dry bags were submerged, I think I will take the added precaution of placing down items in a plastic bag and then place them in the dry bag next time I go backpacking , but for other less important items I would not be that worried.
Has anyone found problems in the field or have any views on this ? – I would be interested to hear about them.
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