I have 5/12 over 2/12 scissor trusses on the new 40x60 shop that just got put up and had some questions regarding insulation. My setup is a little different than normal post frame buildings since I put a standing seam roof on to match the house which means I have 2' on center trusses and 5/8 osb underneath the metal and underlayment. The building also has vented eaves and ridge. I was planning on using r-21 faced batts since the building is only going to be moderately heated in winter and not cooled in the summer. I'm sure an r-30 or 38 would be much better but I can't afford to panel the roof and walls and the walls really need to be finished since I'm running exposed for the wiring. Is there any issues with possibly paneling the ceiling at a later date and blowing insulation over the batts that are already there? For anyone that has done scissor trusses, were there any issues you ran into or things you should have done/not done? Any info you all can provide will be appreciated.
