Window film, understood

A clearer view of window film.

Understand the options. Read the numbers. Ask better questions before choosing film for your vehicle, home, building, or boat.

What would you like to find?

Plain-language guidesSources you can inspectPrintable film reference

Start with your setting

Different glass. Different priorities. Start with the guide that fits your project.

Visibility, test data, local requirements, and the details of a well-defined installation.

Room comfort, light, privacy, existing glazing, and a thoughtful project scope.

Glazing materials, the view from the helm, and questions specific to life on the water.

Make sense of the specifications

Learn what the main measurements describe, why the test glass matters, and what to ask when two claims don’t line up.

VLT: Start with visible lightWhat passes through the tested system?
TSER: Look at total solar energyWhat was measured, and on which glass?
SHGC: Understand the building ratingWhich reference window system applies?

The essentials, at a glance

Each term answers a different question. The test basis matters, too.

Keep learning

Get clear definitions of the common ratings, understand the footnotes, and recognize what a performance sheet can and cannot tell you.

Read it here or print a copy to keep nearby.