estesbubba Posted August 22, 2014 Report Share Posted August 22, 2014 My pole barn is going to be used for hobby woodworking. I'll keep the temperature around 40-45 when not in there and 55-60 when working in there. When I need to spray waterborne finishes I'll get it up to 68-70. I plan on heating it with a propane ceiling mount heater. My walls will be R-19 and the bottom of my trusses are 2x8's. My ceiling and walls will be 7/16" OSB. What R value should I do for the blow in ceiling? Quote Link to comment Share on other sites More sharing options...
..Kev Posted August 22, 2014 Report Share Posted August 22, 2014 Typically around R-38 1 Quote Link to comment Share on other sites More sharing options...
Beerboss Posted October 1, 2014 Report Share Posted October 1, 2014 R-38 is typical but see what more it will cost to go th R-49. At some point you do not get a return on your investment but since you don't want to do it twice going to R-49 may not be that much more. Blown cellulose would be my choice of material. Quote Link to comment Share on other sites More sharing options...
estesbubba Posted October 1, 2014 Author Report Share Posted October 1, 2014 Beerboss - About a week ago I started learning towards R-49 which would cost $160 more than R-38. Seems to be a cheap investment against propane prices. Quote Link to comment Share on other sites More sharing options...
Southwood Posted October 2, 2014 Report Share Posted October 2, 2014 Next summer I am doing shop remodel #3 and planning on insulating the ceiling as well. I am going to go all the way to R-60. The cost difference is not that much on the size of my shop, so figure why not. The more over head the better. Planning on using Owens Corning Atti-cat. If it turns out well, will be taking the house attic up to R-60 as well, with the same stuff. Quote Link to comment Share on other sites More sharing options...
Beerboss Posted October 2, 2014 Report Share Posted October 2, 2014 With my back of the napkin math your simple payback at $2.15 per gallon propane would be about 5 years. Based on 1,000 sq’ Omaha NE weather site all heating (ducts) in conditioned space, slab on grade. Before you pick your insulation check this article out… http://www.homeenergy.org/show/article/page/23/id/895 Quote Link to comment Share on other sites More sharing options...
ChetlovesMer Posted October 2, 2014 Report Share Posted October 2, 2014 Here's something to consider when I doubled my insulation it not only made it less cost to heat, but also helped cut down on the noise escaping from my shop. The noise factor may be something to consider. Quote Link to comment Share on other sites More sharing options...
Beerboss Posted October 2, 2014 Report Share Posted October 2, 2014 The higher the density the better the sound absorbtion. Quote Link to comment Share on other sites More sharing options...
Tpt life Posted October 2, 2014 Report Share Posted October 2, 2014 To a point.... after which the direct opposite is true. Quote Link to comment Share on other sites More sharing options...
Beerboss Posted October 3, 2014 Report Share Posted October 3, 2014 Yes, rigidity then allows sound to pass. Not something you are going to see in thermal insulation until you get into the high density foams. Quote Link to comment Share on other sites More sharing options...
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