How much heat does window film actually block?

High-performance ceramic films block up to 80% of solar heat. Standard solar films block 50-60%. The exact figure depends on the film type and glass. SolarGard Sterling 70 on clear 1/4-inch glass has an SHGC of 0.58, compared to 0.73 without film, a 20% reduction on that reference glass.

Will window film make my rooms too dark?

Solar films at 70% visible light transmission are nearly imperceptible to the human eye. Films are available from 15% VT to 70%+ VT. Most residential applications use 50-70% VT films.

How long does it take to install?

Most residential homes complete in a single day. The film cures in 3-5 days. During curing, minor haze is normal and disappears.

Does window film work in winter?

Yes. Low-emissivity window films reduce heat loss through the glass in winter, providing year-round energy benefit. The effect is smaller than the summer heat rejection benefit but measurable.

Heat reduction

Your windows are letting the heat in.

Solar window film blocks solar heat at the glass before it becomes a comfort and energy problem inside.

The problem

In southeastern Pennsylvania summers, south- and west-facing glass can reach surface temperatures above 100 degrees Fahrenheit. That heat radiates into the room, forces your HVAC to work harder, and creates uncomfortable hot spots near windows.

The solution

SolarGard solar film is applied to the interior glass surface and blocks up to 80% of solar heat before it enters the room. Most homeowners see a 20-30% reduction in cooling costs. The film is nearly invisible from inside and outside.

What you get

Benefits

Blocks up to 80% of solar heat

High-performance ceramic films reject the majority of infrared energy at the glass surface, reducing the heat load on your HVAC.

Reduces cooling costs 20-30%

Most residential installations pay for themselves within 3-5 years through reduced energy bills.

Eliminates hot spots

Rooms that were unusable in summer, sunrooms, west-facing offices, conservatories, become comfortable again.

No view compromise

Unlike blinds or blackout curtains, solar film maintains your view and natural light while blocking heat.

Works on existing glass

Applied to your current windows. No replacement required. Most residential installs complete in one day.

Year-round benefit

In winter, the same film reduces heat loss through the glass, adding insulating value.

Questions

Frequently asked

How much heat does window film actually block?: High-performance ceramic films block up to 80% of solar heat. Standard solar films block 50-60%. The exact figure depends on the film type and glass. SolarGard Sterling 70 on clear 1/4-inch glass has an SHGC of 0.58, compared to 0.73 without film, a 20% reduction on that reference glass.
Will window film make my rooms too dark?: Solar films at 70% visible light transmission are nearly imperceptible to the human eye. Films are available from 15% VT to 70%+ VT. Most residential applications use 50-70% VT films.
How long does it take to install?: Most residential homes complete in a single day. The film cures in 3-5 days. During curing, minor haze is normal and disappears.
Does window film work in winter?: Yes. Low-emissivity window films reduce heat loss through the glass in winter, providing year-round energy benefit. The effect is smaller than the summer heat rejection benefit but measurable.