Insulation above kitchen ceiling.

[Guest]

I've torn out my kitchen ceiling and will replace it by simply stapling 2'x4' ceiling tiles to the joists and covering the seams with trim. There was a 2" thick roll of insulation above the old ceiling which makes it less than an R11 and 3" is as thin as I can get from Menards. The ceiling goes from 4.5" at the peak to 2.5" at the wall. What to do?

[Mark]

You should be fine with 3" insulation.

Good luck!
Mark