Discussion Starter · #1 ·
I plan on installing either 4 inch ic or 4 inch airtite ic cans in new construction. I am planning to use spray foam to do a flash and cellulose type insulation in the attic to achieve an r-80 insulation. There is no problem with room to achieve this,and I will use mini spirals in the can as I have done in the past without problem. Is there any reason I could not safely spray the cans to get a complete seal.