1/2" CCF foam- what temperature range?

[warbonnetguy]

totally depends on the quality of the foam, 1/2" eva foam and 1/2" blue foam from walmart would be drastically different.

1/2" of "good" foam would take you well below freezing

[Just Jeff]

It also depends on the pad's design. 1/2" egg crate CCF is only 1/2" thick at the crests...the troughs (where you'd put the eggs) are only about 1/4" thick. So comparing the 1/2" Walmart egg crate pad to a pad that's a full 1/2" thick for the full length will give you drastically different results.

Walmart's new 28" pad is the same way...it's not egg crate, but it still has a design with much thinner areas of CCF in it. These will cause cold spots.

Real camping stores often have full CCF pads, made out of a much warmer foam, than Walmart.

[beep]

FWIW, last weekend I used the 1/4 inch EVA pad from JRB under my legs in a WBBB and was comfortable at 27 degrees F. (as long as I had the pad sufficiently placed to keep my feet/heels on the pad).

[Bleemus]

make sure you check out the Gossamer Gear Wide Thinlite pad. In a pad pocket this is the ultimate UQ at about 4-5 ounces. With my WM Summerlite bag and one Thinlite in my pad pocket I was toasty warm down to 40F.

[MedicineMan]

wider and wider ccf pads years ago banging on trees, snagging on branches years ago ultimately led to the dev. of the underquilts....nowadays thanks to the UQ (Jacks-r-Better) we can use the ccf to supplement the UQ at minimal cost/weight...you'd be surprised at what a 1/4 inch pad can do when used in conjunction with a down underquilt....

[jeanlee411]

And that same link (at the bottom of the linked page) has a table listing various pads and mattresses with their expected temperature comfort limits.

-6 to-8 ? Oh my God , you are a warm sleeper.. I bought the different style walmart just started using.. It is more like a segmented styrofoam? 26in. wide.. Probably would
go to mid 30s with it.. with a light sleeping bag.. I'm new to this and so far 39f is the coldest I have experienced so far..