Quote:
Originally Posted by thevillages2013
In our area in Pine Hills the builder used Tech Shield roof decking. Each sheet of 4x8x7/16 roof decking (oriented strand board) OSB has a film (like aluminum foil) on the bottom of it. I can tell you that it definitely makes a difference in the attic temperature. This is not my first experience with this product. Also there was a company in Ga that coated the bottom of the roof decking and any gables with spray foam insulation. It works so well there was is no ceiling insulation needed
|
Yes, they did this for a few years. Radiant barrier applied to the bottom of the roof sheathing, as yours is, is different than aftermarket radiant applications. Back then they did this and used an R-30 insulation. Folks complained about poor cell phone reception, etc., so they switched back to using regular 15/32" OSB sheathing and upgrading the insulation to an R-38. The use of spray foam on the underside of the roof sheathing is different altogether, and of course has it's own benefits and problems. Actually The Villages did build some homes with the spray foam in one neighborhood a few years ago, then returned to the use of R-38 insulation above the ceiling.