"2/ the main floor ceiling.
It is very important that you insulate this ceiling to
the highest standard, this is where most of your expensive heat is going."
Thanks Perry, that is exactly what i have been thinking, but everyone tells that it not necessary. The contractors, even the re agent.
Actually i got a good deal on Roxal insulation i just have to pick it up. It is 4"x3"x6' remnant strips.
Yes about the basement, the furnace will be down there, laundry. But i don't plan on much use of the basement. I think the insulation will prevent the heat from dropping down from the first floor.
Here's the room if you didn't see the other thread:
I don't think there is any insulation in the walls either. You can see the stairwell will lose lots of heat anyways.