DEFINITIONS

Degree Day
A degree day is the difference in temperature between the outdoor mean temperature over a 24-hour period and a given base temperature.

SIP's
Structural Insulated panels (SIPs) are engineered building systems that consist of a foam core insulation most commonly sandwiched between two pieces of OSB (oriented strand board). SIPs can be used for structural and non-structural applications in both residential and commercial construction.

Sustainable building
The term sustainable building is used interchangeably with green building. Its purpose is to reduce the adverse human impacts on the natural environment, while improving our quality of life and economic well-being.
Vapor Diffusion
is the process by which water vapor migrates through a wall system and its components such as gypsum, building wrap, insulation and paint. Each component of the wall system has a perm rating. The International Building Code (IBC) says that a material with a perm rating of 1.0 or less is a vapor retarder.


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