Quote:
Originally Posted by GrampianStars
I went with just the foil
under the west and north walls and the roof 
you won't regret it
radiant heat  is considerably reduced & does not get into the obs as much |
I have foil sarking under the roof iron but none on the walls. There is lots of airflow around the roof for me and it doesn't get wet. The only problem is that it let those anoying mudwasps in and I have to wrap the scope in a sheet to stop them building nests.