PVC vs Melamine

[TVR22]

Which holds heat or should I say insulates better?

[PitOnTheProwl]

for?
either will work for a rack, heating the room helps a lot either way too.
we need a little more information on your plans, location, room temps and so on.

[TVR22]

It would be for a rack. It would be in my room. I live in SoCal so room temps run between 75-90 spring to fall and dips to the low 70s in the winter when the heater isn't kicked on. With that said and done, the simple question was which insulates better? Oh, and sorry in advance.

[PitOnTheProwl]

Melamine, but its also very heavy

[Mike3377]

It would be for a rack. It would be in my room. I live in SoCal so room temps run between 75-90 spring to fall and dips to the low 70s in the winter when the heater isn't kicked on. With that said and done, the simple question was which insulates better? Oh, and sorry in advance.

Thats just it, how well a material will insulate has EVERYTHING to do with ambient temps. So the original question really wasnt all that simple. A little less attitude will go a LONG way when asking for help!!!!

[kitedemon]

In equal thickness PVCx by a long shot almost 3 times better R value. The issue is most do not use komacel in 3/4, but melamine often is. 3/4 melamine is about R 2. Expanded pvc sheet (PVCx) at 1/4 is R 1.2. If you were planning on using 3/8 as many do it would be very close with melamine slightly better. I personally don't think there is enough of a difference in insulate value to make up for the monumental advantages PVCx has over melamine. (general health / air quality, Fire resistance, weight, moisture resistance, and strength to weight) PVCx is better in every way, melamine is cheap. If you are going to all the time and effort building a rack why use low quality materials?

FYI UTH do not add huge amounts to the heat of air. The balance of heating ambient air with just UTH is difficult at best. Luckily you only need a few degrees... I would suggest that more than 6º for the air is difficult with out major modifications.

[TVR22]

Thats just it, how well a material will insulate has EVERYTHING to do with ambient temps. So the original question really wasnt all that simple. A little less attitude will go a LONG way when asking for help!!!!

I did apologized ahead of time.
And thanks for the simple and complex answers.