New Construction

Picture of a typical NFRC window label - Snagged from the NFRC website.
Almost everything you need to know about windows can be found on the NFRC label that comes on the window, and your window dealer should be able to furnish you with this information before you place your window order.
What you will find [...]

The Airtight Drywall Approach to a Tight Thermal Envelope
The building envelope is the part of the house which separates the indoors from the outdoors, and consists of the floor on the bottom level, the ceiling on the top level, the exterior walls, the exterior floor bands, and of course the doors and windows. The [...]