Is anyone out there familiar with Ohio building code?
I am struggling with an apparent discrepancy. for energy efficiency Ohio Building code follows IECC 2012 and ASHRAE 90.1 - 2010.
for roof insulation entirely above deck for Zone 5 , IECC 2012 calls for R-25
for roof insulation entirely above deck for Zone 5 , ASHRAE 90.1 - 2010 calls for R-20
to complicate things, Our spec writer followed ashrae and called for R-20, but when I did the drawings, I followed IECC and called for R-25. the contractor is asking for clarification. He priced the job at R-20 and wants a change order to go to R-25.
I am struggling with an apparent discrepancy. for energy efficiency Ohio Building code follows IECC 2012 and ASHRAE 90.1 - 2010.
for roof insulation entirely above deck for Zone 5 , IECC 2012 calls for R-25
for roof insulation entirely above deck for Zone 5 , ASHRAE 90.1 - 2010 calls for R-20
to complicate things, Our spec writer followed ashrae and called for R-20, but when I did the drawings, I followed IECC and called for R-25. the contractor is asking for clarification. He priced the job at R-20 and wants a change order to go to R-25.