rck wrote:
I just added on a room and getting ready to insulate. The old part of the
house has R-11, both walls and ceiling. What is the recommended insulation
these days for putting between 2 x 4's? Part of the roof for the new room
includes what was a porch and has only 2 x 4's, not 2 x 6's. Also, will
ceiling tile provide more R value than drywall?

Bob


Hi
It is your local thing. Depends where you live.
Simply more is better but there is minimum needed per code.
Here(Alberta), wall is R20, ceiling is R40 minimum per code.
Tony