Insulation for ceiling 30 inch’s between joists

[GotJeep]

Hi:
What would be the best way to insulate the ceiling in my attached garage.
It’s 20x32 the joists are 30 inches apart. I’m in Wisconsin and the garage already has a natural gas heater installed.
Any ideas would be helpful.
Thanks
Steve

 

[Ralphxj]

My trusses are 4ft apart, I plan in using blown in insulation. You could use 20in wide rolls and split 1 down thr middle.

 

[dmcintosh]

In my last garage I did the blown in for my ceiling. Was actually less expensive to hire it out than for me to buy materials at the local big box store. I did do the prep (installing soffit blocks) but definitely a great was to add R-value.