you can calculate the weight by building a propotype.

Hi Lee:
Sorry, I thought that you were making a 'joke' about my life expectancy.
All kidding aside, I agree with you, and I am reconsidering my insulation levels & types throughout the house - I don't think that I will be in the house long enough to make 'super-ish insulating' worth it. I don't think that it will help my re-sale value either because, to most people, a house is a house is a house...
My 'fliipping foundation', on sloping bedrock, is my biggest problem - expensive to build with no 'living space return on my investment' as most of it will have about 3 feet of headroom. My building code requires a 'continuous perimeter foundation'.
Rob.

Hello, late to party as usual.
2 of us blew in cellulose above my kitchen 200ft2 until all that I had bought was gone. It's about 24" deep.
16" OC trusses, 1/2" sheetrock, 10 yrs. & no sign of sagging.
BBP