[pct-l] To waterproof or not to waterproof (ye old sleeping bag)

[Paint Your Wagon]

Heather,

Thank you for reminding me of how much these mylar bags trap moisture.
I'm ditching the idea of waterproofing my sleeping bag.
Your idea of cutting open the end of the bag has given me an excellent idea 
to use on the mylar bag.
Affix strips of duct tape across the width of the bag maybe 18" apart
and cut some slots in the duct tape running the same way the duct tape runs.
Maybe cut a few inches then skip a few inches then do it again.
Repeat on the other strips.
The actual slot would need to have a fixed bit of an opening manufactured 
into each cut.
An extremely elongated diamond shape would work.
That way- the slots wouldn't close up.
There would be an optimal amount of openings, determined by trial and error.
I might not do this if I was to use the bag for it's intended purpose as an 
emergency shelter,
but as an outer shell for a sleeping bag, probably so.

Thanks again,

<>Paint<>

Heather wrote:

>>> Paint, I used the emergency mylar bag with my hammock.
(Long story short, too small a pack, too much food = no room for sleeping 
quilt!)
After basting all Friday night, in 30-degree weather,
I opened a slit in the end for Saturday night, again 30 degrees.
Slid the whole contraption over the hammock.
The ventilation was a huge improvement.
I have repeated this since and as long as my skin doesn't have to touch the 
mylar I'm okay!
(Love my silk jammies!)
If you have already done your bag, you could consider inside-out, as though 
you were using the VBL?
Or, if you haven't, perhaps just either top side and edges only, if you 
cowboy camp (shelter-less)
or bottom side and edges, a' la "bathtub-floor bag",
if you camp footprint-less?
Just bandying about various thoughts, not saying they are good ones... <<<