Why This Matters
Glass is a poor thermal barrier. Even double-pane windows transmit significant solar heat — especially on south- and west-facing exposures where the sun angle is most direct.
Near Alter Systems, LLC in Berkeley, west-facing windows at low afternoon sun angles drive the highest interior temperature increases. This is especially problematic for historic or older home installations, which older single-pane windows benefit most from low-e retrofit film to improve thermal efficiency.
Southern California's Santa Ana wind conditions create periods of exceptionally clear, dry air that amplify solar intensity. During these events, unfilmed windows can drive interior temperatures 15–20°F above set point.
The Solution
Professional installation ensures the film is applied without bubbles, gaps, or edge lifting — all of which reduce effectiveness and shorten lifespan.
Anti-reflective film is the most targeted solution for glare: it reduces peak window luminance without significantly cutting total light transmission. Best for rooms where screen visibility is the primary concern.
Blocks high-heat solar wavelengths to reduce interior temperatures and UV exposure.
Climate & Solar Performance
Properties near Alter Systems, LLC in University of California Information Systems & Technology, 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 historic or older home protection
Professional installers available in Berkeley
10–15 year manufacturer warranty
Installation Guide
Film curing takes 30 days after installation. During this period, you may notice small water bubbles or a hazy appearance — this is normal and will resolve completely as the adhesive cures.
Install time
30–45 min
Per window
$150–$400
Cure time
30 days