Is there a cross section of the aluminum that looks like a I beam? I wonder
if you could use foam insulation to insulate the aluminium... ??? Never
having tried it myself... but extrapolating from a Ford truck frame TV
commercial....

K Barrett

"Dusty" wrote in message
. 17.102...
I put up a used Aluminum frame greenhouse last spring and this is my first
experience with this type. (My other one is wood framed) Now that the
temperatures are dropping into the single digits my frame looks like the
inside of a never defrosted freezer. My question is there any way to
prevent this?