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I've always footprinted outside of my tent but found water inside my tent after really heavy rainfall. This has led me to wonder whether an additional liner inside of the tent would serve useful as a second footprint.

Have you done this? What are your thoughts on this double footprint approach (if pack space and additional weight aren't a concern)?

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3 Answers

up vote 3 down vote accepted

I've used a double liner (one inside the tent, one outside) before, and it was very effective. When I was in high school, I went on a multi-day backpacking trip where it rained every day. This was in the forecast, and bringing the double liner was the only thing that kept the water out.

You could also double check that you're setting up your tent in a site that will be less likely to have water running along the ground in a heavy rainstorm.

If you only have one liner, I'd recommend you put it outside then tent, because that will help protect the tent floor from wearing out when it grinds against the ground as you lie inside.

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Footprints:

  • Zero? Sure.
  • One? Good.
  • Two? Nice.
  • Three? Great.
  • Four? Bomb-proof!

My point is this: if you have a waterproof floor on your tent, you don't need any footprint. The trouble is, you are subjecting your tent floor to the abuses of rocks, sticks, sea-shells, brambles, or whatnot - meaning it will quickly get micro-tears and perforations.

Enter the footprint: a cheaper, replaceable protector for your tent floor. Thus, you want to put it OUTSIDE to protect the floor of your tent, which is (or should be) waterproof already. The footprint itself is usually waterproof (and in fact. some tents can be set up with just to footprint and the rain-fly as an ultra-light body-less option.)

Now, if both your footprint AND your tent have lots of wear and holes, then neither will help much (even together) in a deluge. Sure, ANOTHER footprint inside would help (assuming it is structurally sound) but if you need it, you might re-consider how your floor got to this state of disrepair in the first place, and re-adjust accordingly.

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If you put down a ground tarp that is significantly larger than the tent (and by significant I mean more than an inch or so), tuck any extra under the tent, otherwise rain will hit the tarp and then go straight to the tent-floor, opening the door for tent-floods.

I have never put a tarp inside a tent, but I have also never had an issue with tent-flooding once I learned to tarp outside and tuck under.

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