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					Originally Posted by Olafhenny  If you mean by that, that you used a box of 1 inch Styrofoam, you achieved an R-value
 of 4.  In my blurb of R values in the "permanent shelter" thread I explained originally,
 that I would achieve an R-value of 15, with two layers of 1" polystyrene and fiberglass
 batting between.  Later, after I purchased the fiberglass I noticed the rated value of
 R-12 and upgraded my estimate to a total of R-20, after I installed the fiberglass
 batting and felt, that it would provide the rated protection fully.  If you just used a 1"
 polystyrene shell, you achieved only 1 fifth of the protection my basjoos got.
 
 Best,
 Olaf
 
 
 
 
 
 
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 So add another shell of 1 inch over my existing cone and stuff it completely with batting and that would do the trick?