Which California Energy Code edition applies to a window permit filed now
The 2025 edition of the California Energy Code (Title 24, Part 6) takes effect January 1, 2026 and applies to permit applications filed on or after that...
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Useful window research
What does a NAFS performance grade on a window label mean
A NAFS performance grade combines the performance class with a design pressure rating and a tested size.
How to Verify a Window Contractor's License in California
California requires a licensed contractor for window replacement work over $500. Verification takes two minutes through the Contractors State License Board and should include license status, classification, bond and workers compensation coverage.
Fiberglass and Composite Window Frames: Where They Fit
Fiberglass and composite frames can offer useful stability and finish options, but value depends on the exact product, NFRC and NAFS ratings, installation scope, and installed price.
Common Window Problems: Foggy Glass, Sticking Sliders, Condensation and Leaks
Fogging between panes means seal failure. Interior condensation is usually humidity, not a window defect. Water at the sill after rain points to flashing, not glazing. Diagnosis determines whether repair or replacement is warranted.
HOA and Condominium Window Replacement Approval in Orange County
In Orange County's many common interest developments, the window assembly may be common area or a limited common element. Architectural approval typically governs frame color, grid pattern, operation type and glass reflectivity.
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