Window and Door UV Protection for the Green-Minded Homeowner

Windows in green room

Sponsored message from
JELD-WEN Windows & Doors

Being indoors doesn’t always guarantee protection from the sun’s damaging effects.

Just as sunscreen is critical outside to protect against skin and eye damage, the right protection for windows and doors helps to block powerful UV rays from causing irreversible damage to fabrics and furniture indoors. The first step for many homeowners is to invest in windows and doors with Low-E glass and finish exterior doors with a UV-stabilized polyurethane coating.

“Without the protection of Low-E glass technology, UV rays can damage furnishings, rugs and other possessions in the home.” said Brian Hedlund, product marketing manager for JELD-WEN Windows & Doors, a leading window and door manufacturer. “When upgrading to energy efficient windows and doors, homeowners should take extra measures to make sure they are receiving these essential benefits.”

To help protect a home from damaging UV rays, here are a few tips from JELD-WEN window and door experts to give your home a healthy dose of sunscreen:

1. Low-E glass is a must for a green home.
Low-E glass blocks harmful UV rays that cause interior fading. The ultra-thin metallic coating on Low-E glass works by reflecting heat back outdoors or holding the heat indoors in cold climates. It has the ability to allow visible light to pass through while blocking up to 99.5 percent of harmful UV rays. Ultimately, a home protected by Low-E glass remains comfortable year-round, and heating and cooling costs are reduced year after year.

2. Doors need protection too.
After staining an exterior wood door, apply a high-quality, UV-stabilized clear polyurethane coating to protect against the heavy beating it will take from the sun. When upgrading, consider fiberglass doors, typically filled with a polyurethane foam core, to create an ultra-energy efficient door that can also stand up to regular sun exposure.

3. Block powerful solar rays.
The direction that windows and doors face can make a big difference in the sun’s intensity level inside the home. South- and west-facing windows and doors should have the highest level of protection. Window and door exterior overhangs, sized depending upon climate and latitude, provide privacy and block powerful solar radiation from entering the home while helping to reduce electricity usage and indoor temperatures by as much as 15 degrees. To naturally shade the home, consider planting more trees and shrubs. According to the U.S. Department of Energy, properly planting just three trees near a house can save homeowners up to $250 a year in heating and cooling costs.

4. Focus on proven methods tested against industry standards.
Window and door manufacturers achieve energy efficiency in different ways, from Low-E glass to gas-filled insulating glass. The bottom line is to make sure the products are tested and certified for energy efficiency using industry standards, no matter what technology is employed. For the best all-around UV-resistance and energy performance, look for the ENERGY STAR® label appropriate for your region.

To browse windows and doors that meet ENERGY STAR qualifications and provide superior UV protection, visit or call (800) 877-9482.

(Photo Left) Environmentally friendly fiberglass doors, like these JELD-WEN Custom Fiberglass patio doors, feature a UV protective coating and Low-E glass. (Photo Right) Windows with Low-E glass, such as the energy efficient JELD-WEN Premium Vinyl windows, help maintain a home’s indoor temperature during heat waves as well as cold snaps, and provide protection against harmful UV rays.


  1. Paragraph 2 in the above article refers to a “UV-stabilized clear polyethelyne coating”. Please give me a specific brand and where to find it. I would like to use it on the inside of a small frosted (etched) bathroom window which will not accept window film (adhesion problem). Thanks

    • Hi Ken,
      We didn’t write the article above, it was provided by JELD-WEN Windows and Doors, but the polyurethane coating they’re talking about is for wood doors, not windows. You can find several brands of clear exterior polyurethane for wood that provide UV protection in most paint stores and home centers.

  2. Is there a product (polish/cleaning solution) that can be used/applied on a daily basis to a fiberglass door to protect the finish from UV rays and the elements other than polyurethane? My door is new and I would like to protect its finish as long as possible.

  3. We would like to purchase an exterior door that has a full decorative glass insert but are leery of the damage that the sun may cause to our hardwood floors. Is there a decorative door, as I described, that would have glass that is UV rated to protect against this?


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