Bird Divert Philadelphia

The only bird-safe window film that's invisible to humans.

Bird Strike Prevention

The Only Film Birds Can See. Humans Can't.

Bird Divert is manufactured by National Window Film and is the only bird-safety marker proven to achieve an industry-leading threat level of 18. Window Film Philadelphia installs Bird Divert for residential and commercial properties throughout Philadelphia — helping property owners protect bird populations while meeting increasingly strict local bird-friendly building regulations. Up to 1 billion birds die annually from glass collisions, and Bird Divert is the proven solution.

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How It Works

The science behind Bird Divert

Bird Divert dot matrix film Philadelphia

How Bird Divert Works

Bird Divert uses a UV-absorbing and UV-reflecting dot matrix that is optically clear to human eyes — maintaining 98% visible light transmission — but appears black or violet to avian eyes, which see into the ultraviolet spectrum. This dot matrix acts as a visual beacon, redirecting birds away from glass before a collision occurs. The markers are precision-applied to the glass exterior and require no interior access, making the installation fast and non-disruptive.

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Why Install Bird Divert?

Bird Divert is manufactured by National Window Film and holds an industry-leading threat level rating of 18 — the highest available. It is certified under LEED Pilot 55 and endorsed by the National Audubon Society and American Bird Conservancy. With 98% visible light transmission, a PVC acrylic hard coat at 3.2mm thickness, a 5-year manufacturer warranty, and exterior-only application requiring no interior access, Bird Divert sets the performance standard for bird-safe glazing solutions.

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Bird friendly building regulations Philadelphia

Comply With Local Bird-Friendly Regulations

Cities across the US are enacting laws requiring buildings to meet bird-friendly design standards, and Philadelphia properties face rising regulatory pressure. Bird Divert is the easiest path to compliance — applied to existing glass with no interior access required, no renovation, and no disruption to building operations. Whether you are retrofitting an existing building or preparing a new construction for bird-friendly certification, Bird Divert is the fastest and most cost-effective solution available.

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Key Features

Eight reasons Bird Divert leads the market

Invisible to Humans

98% visible light transmission

Visible to Birds

UV dot matrix guides birds away

Threat Level 18

Industry-leading safety rating

LEED Pilot 55

Qualifies for green building certification

Audubon Endorsed

National Audubon Society approved

Code Compliant

Meets bird-friendly building regulations

5-Year Warranty

Manufacturer-backed performance guarantee

Exterior Application

No interior access required

FAQ

Common questions about Bird Divert

How does Bird Divert make glass visible to birds? +

Bird Divert uses a UV-absorbing and UV-reflecting dot matrix applied to the glass surface. Birds can see into the ultraviolet spectrum — to them, the dots appear black or violet, acting as a visible barrier that redirects them away from the glass. Human eyes cannot detect UV, so the markers are invisible to us. The film maintains 98% visible light transmission, meaning the glass looks completely clear to people inside and outside the building.

Will Bird Divert affect my views or natural light? +

No. Bird Divert maintains 98% visible light transmission, which means it is optically clear to human eyes. Your views remain completely unobstructed and your interior receives the same natural light as before installation.

Is Bird Divert LEED certified? +

Yes. Bird Divert qualifies for LEED Pilot Credit 55, which covers bird collision deterrence. It is also endorsed by the National Audubon Society and the American Bird Conservancy — making it the most credentialed bird-safe glazing solution available.

Does Bird Divert require interior access during installation? +

No. Bird Divert is applied exclusively to the exterior surface of the glass. Installation requires no interior access, making it ideal for occupied buildings, high floors, and any property where interior disruption must be minimized.

What is the warranty on Bird Divert? +

Bird Divert comes with a 5-year manufacturer warranty covering performance and adhesion. The PVC acrylic hard coat at 3.2mm thickness is engineered for long-term durability on exterior glass surfaces, resisting weathering, UV degradation, and normal environmental wear.

Are Philadelphia buildings required to use bird-friendly glass solutions? +

Increasingly, yes. Cities across the United States are passing bird-friendly building codes that require new construction and major renovations to meet minimum bird safety standards. Philadelphia properties face growing regulatory pressure in this area. Bird Divert is the easiest and most cost-effective path to compliance — applied to existing glass without any renovation or structural changes.

Ready to upgrade your property with Bird Divert?

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