Excerpted from a full page article on installing exterior foam insulation at: [ Ссылка ]

GET THESE FIVE TRICKY SPOTS RIGHT, AND YOU'LL GET A SUPERINSULATED, ENERGY-EFFICIENT HOME
An experienced builder explains the ins and outs of airtight exterior insulation

Installing rigid foam on the outside of a house is a great way to double the R-value and eliminate air leaks. Large sheets of foam insulation, screwed and sealed to the walls or roof, can cover or replace conventional sheathing and create a continuous barrier to heat loss or gain—something you don't get with cavity insulation alone. We wrapped the house in this video with 4 inches of polyisocyanurate in two staggered 2-inch layers...

For more information read the full page article at: [ Ссылка ]

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