Osoyoos, British Columbia used StreetBondSR solar reflective coatings to reduce the urban heat island effect across parks and pathways. Here's how high-SRI pavement coating works.
In cities and towns where dark asphalt surfaces cover 30–40% of the land area, surface temperatures on a summer afternoon run well above the air temperature, and well above those in the countryside around the town. That temperature differential drives air conditioning demand in nearby buildings, accelerates pavement degradation, and creates genuine heat-stress risk for pedestrians, cyclists, and outdoor workers.
Osoyoos, British Columbia (one of Canada's warmest towns, in the Okanagan at the northern end of the Sonoran Desert) knows the problem. When the town undertook improvements to its parks and pathways, reducing pavement surface temperatures became a specific project objective. The solution was StreetBondSR solar reflective pavement coating.
The science behind high-SRI pavement
Solar Reflectance Index (SRI) is the standard measure of a material's ability to reject solar heat: a composite of solar reflectance (how much incoming radiation is reflected) and thermal emittance (how much absorbed heat is re-radiated rather than retained in the material). Standard dark asphalt has an SRI near zero, absorbing the vast majority of solar radiation and converting it to surface heat. High-SRI pavement coatings redirect a significant portion of that radiation, reducing surface temperatures measurably.
StreetBondSR is formulated specifically for high-SRI performance. Applied to asphalt or concrete surfaces, it keeps StreetBond's flexible bond and gives the reflectance the LEED Sustainable Sites credit for heat island reduction asks for.
What Osoyoos achieved
The StreetBondSR installation in Osoyoos cooled the treated pathways and park surfaces. Routes that had radiated uncomfortable heat in summer became noticeably cooler, usable for more of the day, with less heat stress for residents and visitors.
The installation also counts in the LEED documentation for surrounding buildings and in a municipal climate action plan.
Installation by Square One Paving Inc.
The broader specification case
Osoyoos is the obvious case, and the same applies well beyond hot-climate municipalities. Any development project with LEED targets, any municipality with a climate action plan that addresses urban heat, and any property with significant surface area exposed to summer sun faces the same fundamental challenge.
Parking lots, commercial campus plazas, institutional grounds, and residential common areas all add to the heat island, and StreetBondSR is a practical way to cut that and to document it for LEED.
The coating is available in a palette of lighter, high-SRI tones, with custom Pantone matching for projects that need a particular colour.
Contact HUB Surface Systems to discuss StreetBondSR specifications for LEED projects or urban heat island mitigation programs. LEED documentation support available.
