Use multiple layers of rigid foam insulation, high quality weatherstripping, and several secure latches
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There's a subset of issues in the realm of home efficiency that falls into the category "out of sight/out of mind." The boiler in the basement, how much insulation is in the attic … as long as these issues stay out of your view, no problem. So what's up with attic hatches, then?
Even though attic hatches can be huge air leaks and sources of radiant heat loss, they are rarely fixed. An attic hatch is usually located in a hallway or closet where the homeowners see it daily. Yet...
[1]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/Attic access hatch weatherstripping.jpg (Photo of Mike Guertin installing attic hatch weatherstripping)
[2]: http://www.greenbuildingadvisor.com/blogs/dept/guest-blogs/how-insulate-and-air-seal-attic-hatch
[3]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/Attic hatch thermograph.jpg (Thermal image of an attic hatch)
URL: http://www.greenbuildingadvisor.com/blogs/dept/guest-blogs/how-insulate-and-air-seal-attic-hatch
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