HOW TO INSULATE THE CEILING OF A POLE BUILDING

QUESTION FROM DENNIS OF CHERRY TREE, PA

I want to insulate the ceiling in my pole building. It is a metal building with 4' center on the trusses. I have insulation board on the ceiling and plan on adding furring strips or 2x4's on 2 ft center as addition support so I can add insulation to the area above. I only heat this building when I am working in there. 

Please provide me with the correct procedure and what R-value. The walls are insulated.

Thank you

ANSWER FROM THE INSULATION DOCTOR:

Hello Dennis,
 
Regarding adding the furring strips I am assuming that you are running them 2' on-center the opposite direction of the trusses.  That should be sufficient to hold the blown-in insulation. 

Since you are only heating it on a part-time basis, I would recommend adding at least an R-19 blown-in insulation or a maximum of R-30.  Adding more insulation than this would not be cost efficient unless you were heating it for longer durations.  I am also recommending that you use blown insulation because there is no other way to install roll-type insulation.
 
The type of insulation I would recommend is fiberglas blown-insulation because it is lighter than cellulose and the R-factor would be comparable. 

I hope this answers your question.
 
Bruce Jones
The Insulation Doctor