Emissiv exists to break the Cooling Paradox with radiative cooling coatings. We built the map that finds dark, heat-absorbing roofs, adds the building context behind them, and turns that into a ranked coating opportunity.
Cooling already takes around a tenth of the world’s electricity, and demand is set to double by 2050. Every new air conditioner burns power and vents heat, which raises temperatures, which calls for more cooling. Emissiv’s answer is not a bigger machine. It is a coating that harnesses the power of deep space, shedding heat passively to the coldest sink there is.
A radiative cooling surface works by reflecting solar energy and radiating heat away. Albedo, solar reflectance, is not a side detail of the product. It is its core performance number. That means a tool that measures roof albedo from orbit is not a different business. It is a map of where the heat, and the opportunity, are.
The darkest roofs are the ones that need Emissiv most. Now we can find every one of them.
See how the coating works →The public dashboard is browse-only today: 12 precomputed UK areas, 4,744 roofs, rebuilt with Sentinel-2 cloud/shadow/snow/no-data masking. Live scan-any-address returns after backend QA.
Each roof comes back as a full record: measured albedo, the metric the coating moves; material from OS NGD where present; geometry from LiDAR, including pitch, orientation, height and form on 88.68% of roofs; building context, use, age and EPC joined by UPRN; and planning flags, so eligibility is visible before a call. The card then models how hot the roof runs from albedo plus assumed stock-roof emittance, and sizes the coating opportunity with Emissiv’s 95% reflective, 95% emissive coating.
The output is easy to read: heat rejected and peak-temperature cut are physics on every roof. Cooling pounds appear only when there is a cooling signal. Tier A uses the building’s own EPC/SBEM cooling demand; Tier B uses a published BEES benchmark for that building type and is labelled estimated; Tier C shows physics only and claims no bill saving.
That record is a drop-in superset of the Google Solar API: we mirror its per-roof geometry schema (pitch, azimuth, plane height, area) and add the layers nobody else holds: solar reflectance, material, and how hot each roof is modelled to run. Match their fields, extend them.
Every figure is regenerable from a script, labelled measured or projected. See where every number comes from → · the full report →
On a single clear day, free thermal satellite put the built surfaces of one UK estate at 41.4°C, peaking near 44.8°C, far above the air temperature around them. That surface heat load, soaked up by dark, low-albedo roofs, is exactly what Emissiv’s coating is built to shed.
The Cooling Paradox is not abstract. It is 44.8 degrees on a roof, mapped.
The ideal customer is a large, dark, hot roof. Targeting is reflectance-led: every roof is ranked on measured albedo and area. The cooling-load signals (use, EPC, climate) are a modelled overlay that sharpens that ranking, not a gate that drops roofs. Cold outreach becomes a targeted map.
Total dark roof area is the addressable market. Per building, reflectance, area and the 95% coating give annual heat rejected and peak-temperature cut. Cooling cost and CO₂ are shown only for cooled buildings, using EPC/SBEM when available or a clearly labelled BEES estimate.
The same free satellites revisit every few days, the basis for measuring change over time and verifying impact remotely, building the evidence the mission and its funders need.
An illustrative extrapolation, not a survey. Across 12 city centres we mapped 3.8 km² of roof, of which 1.9 km² sits below 0.25 reflectance (the band a cooling coating can meaningfully help; the stricter <0.18 “strong candidate” set is 0.6 km²). Scaling that ~51% share to the UK’s ~2,000+ km² of building roof (an order-of-magnitude estimate) at half the share we map in those centres (city centres skew to flat commercial decks, so the national mix is lighter) gives ~500 km². The solar-heat figure is robust physics, the load a 95% coating bounces back. We deliberately do not headline a national £ figure: the cooling bill depends on air-conditioning, which only a small minority of UK homes (around 5%) have. Scaling is a question of compute, not data or cost.
We will not oversell it, and that discipline is the point.
Emissiv set out to keep the world cool without warming it. This turns that mission into something you can point at: here are the dark roofs, here is the building context, here is the modelled heat, here is the coating opportunity, and here is exactly how confident each number is.
Same physics as the product. Pointed at the whole country. For free.
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