How To Fix a TPO Roof That's Too Reflective?

White TPO membranes are highly reflective by design — that's a feature for energy efficiency. But in some installations, the reflectivity creates problems: glare for neighboring buildings, heat reflection onto adjacent HVAC units, or local ordinance issues. Here's what can be done.

Why High Reflectivity Is Usually Good

White TPO typically achieves solar reflectance of 70–80%, keeping roof surface temperatures low and reducing cooling loads. This is generally desirable and is often required by energy codes in warm climates. Most "too reflective" concerns are aesthetic or neighbor-relations issues rather than performance problems.

Option 1: Apply a Coating With Lower Reflectance

A coating in a gray or tan color can be applied over the white TPO, reducing overall reflectance while still maintaining better performance than a dark roof. This approach preserves the waterproofing benefit while moderating the visual impact.

Option 2: Granule Application

Broadcast granules can be applied into a coating layer to reduce reflectance and create a matte surface. This is commonly done in areas where glare is a specific concern.

Option 3: Parapet Walls or Screening

For rooftop glare issues affecting neighboring buildings, physical screening or parapet wall extensions can block sightlines without changing the roof surface itself.

Important Note

Before altering the reflectance of a warranted TPO system, consult with the manufacturer. Some modifications may affect warranty validity. Work with a manufacturer-approved contractor for any coating applied over an existing warranted membrane.