Windows are one of the highest-impact upgrades in a remodel — for comfort, noise, and energy bills — and in California they're also regulated. If your project replaces or adds windows, Title 24 energy code sets minimum performance, and understanding it before you shop saves money and rework.
The two numbers that matter
- U-factor — how well the window insulates. Lower is better; Title 24 sets a maximum for our climate zones.
- SHGC (Solar Heat Gain Coefficient) — how much solar heat passes through. The right number depends on orientation: lower on hot west exposures, a bit higher where you want winter warmth.
When code kicks in
Replacing windows generally triggers compliance with current standards, and permitted remodels are inspected for it. The upside: modern dual- or triple-pane, low-E windows vastly outperform the single-pane or early dual-pane units in most older Peninsula homes — quieter rooms, no cold edges, lower bills.
Choosing well
Frame material (fiberglass, clad-wood, vinyl, aluminum) affects both performance and look. On character homes, we match sightlines and proportions so new windows don't flatten the architecture. And proper installation — flashing and air-sealing — matters as much as the window's rating; a great window installed poorly still leaks air and water.
Replacing windows in your remodel? Request a free estimate or call us at (844) 403-2911.
Planning a Bay Area remodel?
High Touch Consulting & Development is a licensed general contractor serving the San Francisco Peninsula and Silicon Valley. We provide free on-site consultations and fixed-scope written proposals.
