Why This Matters
Solar heat gain through windows accounts for 25–30% of residential cooling load in California homes. That's the single largest controllable source of summer heat gain.
Near Golden Gate University in Berkeley, west-facing windows at low afternoon sun angles drive the highest interior temperature increases. This is especially problematic for home office installations, which glare control and uv protection are critical for home offices with screen-facing windows.
California's Title 24 energy code sets minimum window performance standards for new construction. Window film can bring older homes up to — and beyond — those standards at a fraction of the cost of window replacement.
The Solution
Film selection for south- and west-facing windows should prioritize solar heat rejection. For north-facing windows, UV protection and glare control are typically the primary goals.
Low-e retrofit film is specifically designed for older single-pane windows. It adds a low-emissivity layer that dramatically improves thermal performance — the most cost-effective upgrade for pre-1980 California homes.
Blocks high-heat solar wavelengths to reduce interior temperatures and UV exposure.
Climate & Solar Performance
Properties near Golden Gate University in University of California, Berkeley, Berkeley experience afternoon heat gain conditions that make window film particularly effective. Solar Control Window Film is specifically engineered to address this solar exposure.
Effective against afternoon heat gain
Rated for home office protection
Professional installers available in Berkeley
10–15 year manufacturer warranty
Installation Guide
Professional installation typically takes 2–4 hours for a standard residential job. The installer will clean the glass, apply the film with a slip solution, squeegee out all air pockets, and trim to a precise fit.
Install time
30–45 min
Per window
$150–$400
Cure time
30 days