Guides
- Nail fin, flush fin, block frame or insert? Choosing a window installation type
The four ways a residential window goes into an opening, and which one fits new construction, replacement and re-siding jobs.
November 2, 2026
- Window U-factor and SHGC requirements for homes, by climate zone
How to read the residential energy code limits for windows, how they differ from ENERGY STAR, and how to check a window against them.
November 2, 2026
- Vinyl vs fiberglass vs clad wood vs aluminum windows, for builders
How the four main residential frame materials compare on cost, performance, lead time, colors and callbacks, and which projects each one suits.
November 2, 2026