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 Topic: Where can I get an inner?
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10/7/2018 at 2:32pm
Location: Derby.
Outfit: Karsten 350+Awnings
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Don't be too hasty congratulating that there husband just yet...
First off, I believe in this instance, we are talking about a polyester tent, on which my following thoughts are based...
Re "inners used to be rare but now very common" type comment... I'd say that's because most tents are now sealed, with sealed/sewn-in groundsheets, unlike yesteryear.
Bedroom inners tend to be breathable. They form an insulation barrier (of air) between the inner and the fly sheet, effectively making the bedroom warmer than the living area (A bit like the air gap between the two layers of bricks that form the shell of many houses, but not as effective!).
In the case of polyester tents, which I believe the OP has, the groundsheet and flysheet should be totally waterproof... which means no moisture comes in... and no moisture goes out!
Someone on here can recite just how much moisture an average person breathes out during an average nights sleep... I can't remember the details, but I do remember being flabbergasted when I read it. Let's just say, it's "quite a lot"!!
Now... with the aforementioned breathable inner... "Quite a lot" of warm moist air rises up from our breath, through the inner, hits the colder waterproof barrier that is the flysheet, turns immediately to water, which is too heavy to cling on, so drips... landing on the inner, and soaking in to it, drying as the sun comes up/doors get opened in the morning.
Now... without the aforementioned breathable inner..."Quite a lot" of warm moist air rises up from our breath, directly hits the colder waterproof barrier that is the flysheet, turns immediately to water, which is too heavy to cling on, so drips... landing on your sleeping bag/nose/tomorrows clean fresh clothes/loaf of bread/dog's tail/ child's last tee-shirt/loo roll next to the bucket etc, etc! (Delete as applicable).
So, "Quite a lot" of moisture, x number of people breathing through the night = To avoid disaster, keep every single vent fully open, and every single finger crossed, as the vents might not quite be enough to keep you dry through the night!!
NB(1):
Breathable fly sheets can allow your breath to escape, hence some cotton canvas tents don't require an inner (e.g. mine!)
NB(2):
That moisture doesn't always necessarily turn to drips upon contact with the cold polyester... I guess in certain scenarios, it could just turn to ice!
In a nutshell... Sounds a bit risky to me!!
... and anyway, unless the ad stated it came with no bedroom inner, it strikes me as a mis-sale/not fit for purpose type scenario!
I don't tend to buy used camping goods, so no idea how a claim for a refund would go, but that would be my first port of call.
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