U-Factor and SHGC: All Answers

What the two window numbers mean, the limits by climate zone and which one matters for your project. Pick the question closest to yours.

1. Title 24 U-Factor vs SHGC: Which Number Matters?
2. Dynamic Glass and Electrochromic Windows Under Title 24
3. Mixing Window Types: How the Area-Weighted Average Works and What to Do When One Misses
4. Are Double-Pane and Low-E Windows Required in California?
5. Where Window U-Factor and SHGC Appear: CF1R, Plan Set, Label and Installer Certificate

Back to Windows and Building Envelope, or see the full Title 24 guide.