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Compliance for site-built glazing systems is comparable to other assemblies within the building envelope but can be challenging because documentation on glazing performance values is not usually avail...

Windows typically have a higher U-factor than the rest of the building envelope so structures with high glazing areas are less likely to comply with the energy code.

The projection factor enables you to characterize the shading impact of horizontal overhangs or canopies that project outward from the plane of the window.

U-factor measures how well a product prevents heat from escaping.

This article is based on Orientation/Projection Factors questions asked during the August 18, 2005 COMcheck Web-based training session as well as questions received through email.

If your local jurisdiction allows the use of COMcheck to demonstrate energy code compliance, showing compliance for metal buildings can be much easier than you may have thought.

The latest versions of the Building Energy Codes Program compliance tools have the capability to upload and download files to and from the desktop and web-based versions of the software you are using.

Over the years, the International Energy Conservation Code (IECC) has grown to provide different approaches of varying simplicity and flexibility to meet user needs.