/ Root Cellar Remodel, Split Level Storage, Shop, Shed Pole Building on a Foundation
#261
Iplayfarmer said:I need some help thinking through the pros and cons of how to insulate my garage door. My plan includes a wooden frame with an insulated core and a skin of 1/4" plywood. I have some styrofoam pieces that are 1.5" thick (pictured). I figure I have 3 options...
1) Make the core 1.5 inches thick and use a single layer of styrofoam: Overall door thickness = 2". Overall R-value = 7
2) Double the styrofoam and make the core 3 inches thick: Overall Door thickness = 3.5". Overall R-value = 14.
3) Buy something else completely and make it as thick as I want.
How cumbersome will a 3.5" door be? Is it worth the extra R-value? Is it worth the extra money to buy a different core?
Depmandog said:Refresh my memory on the door size, and if you want it to be a sectional overhead, a one piece lift up, a one or two piece slider or double door outward opening hinged door.
Iplayfarmer said:In doing a little of my own research I found this article... Energy-Efficient Garage Doors | GreenBuildingAdvisor.com
The take home message as I see it is that no matter what kind of insulation I use, the more important part is sealing up the door against air leaks.
... My slider leaks air. No more than I use it, I should never had built it. In fact, I keep it covered with plastic (north side of the building) to keep the drafts down...