Let's Fly Through Your Questions


The markers cover approx. 6% to 8% of the glass surface, your view to the outside is not hindered, and in fact, after a short time, you don’t notice the markers. It’s almost like looking through a window with a screen; you don’t look at the screen; you look through or past the screen. We have even done several viewing windows of Zoos with our product! Please refer to our Case Study page for photo examples of installations.

Yes! Feather Friendly® is designed to withstand regular window washings for many years. After the installation, allow the adhesive to set for 30 days before cleaning. You can then clean with a soft cloth, paper towels, or rubber squeegee, along with typical cleaning products for glass, including soap and water and glass cleaners like Windex. However, we recommend against using pressure washers or abrasive cleaners.

We offer different products based on the size of the project in small, medium, or large-scale formats. Our professional installers, however, are only available for our large-scale format and require a minimum of at least 300 sq ft to be eligible. If your project qualifies, we have an extensive international network of Authorized Dealers/Applicators that we can connect you with info@featherfriendly.com

If you still require help to install any of our products, as an option, we highly recommend connecting with a local window washer or handyperson (we suggest sharing the install video with them for the best install practices and methods). Generally, they will have the equipment needed to access difficult-to-reach glass.

Glass should also always be cleaned before applying Feather Friendly®.

As with any product designed to prevent birds from hitting glass, Feather Friendly® is far less effective if placed on the inside surface. Birds must be able to see the markers to avoid them (and thus avoid the glass). Glare from sunlight can make it impossible for birds to see anything placed on the inside of a window. For this reason, we strongly recommend that you apply Feather Friendly® to the outside of your window.

It depends on how much glass you plan to cover, but generally speaking, an area of glass roughly the size of a sliding glass patio door takes 1-3 hours. (This is noticeably less time-consuming using our Medium-scale Pro-DIY, and even more so with our Large-scale Pro solutions) The first rows of markers take longer as you get used to working with the material, but the application should become easier and faster once you get used to the process. Check out this installation video created by one of our clients. It is a great demonstration of how to apply the Small-scale DIY and will give you an idea of how much time you will need.

For install videos of our other sized products, please connect with us at info@featherferiendly.com

If the screen is on the exterior side of the glass, your window IS protected from reflection issues. If the screen is located on the interior side of the glass, your window is NOT protected from reflection issues and should be treated. If you are still unsure, don’t hesitate to contact us at info@featherfriendly.com for assistance.

As long as the cleaning and installation instructions are followed, the markers have a durability and longevity of:

8+ years for Small-scale DIY

12+ years for Medium-scale Pro DIY

15+ years for Large-scale Pro

Yes, it does! When following the best practice of 2" x 2" spacing, Feather Friendly® DIY Markers greatly reduce collisions. While every project is unique, independent studies have shown our product to have a 95%+ reduction in bird-glass collisions.(1) We are tested and approved by American Bird Conservancy, Dr. Daniel Klem Jr., and countless other organizations. (2)

(1)Peer J paper on our Large-scale Pro solution, with pre and post-monitoring. http://peerj.com/articles/13142

(2) Products tested: Small-scale DIY in 2”x2” and 2”x4” spacing. Large-scale Pro in Symmetry, Harmony, and Rain pattern.