The Good, bad, and Ugly

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With interest in green building and utility rebates on the rise, builders and remodelers are looking at solar-controlling window films as a cost-effective solution for boosting home efficiencies and reducing costs for clients while lifting sales and profits for themselves. Applied to the window, transparent film acts as a solar shield, blocking up to 80% of the sun’s heat, according to the International Window Film Association. “The biggest trend I’ve noticed over the past few years is that people put more and more glass into a home,” . “Solar control is the payback. [With window films,] in three years you’re going to get your money back and if you buy a good quality product from a reputable dealer, it will last you 20, 25 years. It’s really a bang for the buck.”

Nevertheless, lack of awareness, misperceptions, and the small additional cost are impeding the category’s growth, installers say.  Here are some of the product’s pros and cons.

Pros

  • Window film can cut utility costs by 30% to 40%, says California-based consultant Donna Wells, and at $6 to $14 per square foot, it’s much cheaper than replacing windows.
  • Solar films block 99% of UV light that fades furniture, and with better technologies, now do it without looking reflective or dark.
  • Films add security, slowing down a break in and holding shards together if the window shatters.
  • Some state and utility programs offer rebates for window films.
  • While mainly a retrofit product, some films can make a low-cost new window as efficient as a low-E, triple-pane unit, says Wells.
Solar Gard. Solar Window Film, which installs on the inside of the window, contains particles of titanium, stainless steel, copper, gold, silver, aluminum, and other alloys to reject up to 79% of solar energy, says the manufacturer. The film is said to block 99% of ultraviolet rays to protect furniture and regulate indoor temperature. The film, which requires a professional installer, can contribute points toward green building certifications, the firm says. The product is available in various levels of opacity, from clear to black. 877.273.4364. www.solargard.com.
Solar Gard. Solar Window Film, which installs on the inside of the window, contains particles of titanium, stainless steel, copper, gold, silver, aluminum, and other alloys to reject up to 79% of solar energy, says the manufacturer. The film is said to block 99% of ultraviolet rays to protect furniture and regulate indoor temperature. The film, which requires a professional installer, can contribute points toward green building certifications, the firm says. The product is available in various levels of opacity, from clear to black. 913-829-5500

Cons

  • Some window manufacturers warn that films will void their window warranty; however, several film manufacturers offer to match it.
  • Certain lites, latches, and frames make installation difficult, and a bad application can leave glass looking bubbly.
  • Most homeowners are skeptical of the benefits, making film a hard sell that requires education.
  • Installers say some film brands are better than others, so buyers should look for NFRC

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