The Challenge
Metal roofs heat up fast and hold the heat
Steel and aluminum panels conduct solar energy directly into the building. On a hot summer day, an uncoated metal roof can reach 160°F and radiate that heat downward for hours after sunset.
Workers in non-conditioned warehouses and shops experience punishing interior temperatures. In conditioned spaces, HVAC systems run nearly constantly to fight the heat load, driving up energy bills and shortening equipment life.
Replacing the panels is rarely viable. Coating them is, but only if the coating actually rejects heat instead of just brightening the color.
The Solution
An ICP-powered coating designed for metal substrates
Cool Roof Coat is engineered to bond to metal panels and reject solar heat: high reflectance, high emissivity, and a barrier distributed through the film itself. It does more than reflect, it actively slows the heat that does land at the surface from getting into the substrate.
Unlike paint or simple white coatings that lose performance when they get dirty, Cool Roof Coat maintains its thermal performance even with a layer of dust or pollen, and its CRRC-rated aged solar reflectance measures exactly that: performance after three years of field exposure. Critical for metal buildings in agricultural, industrial, and rural environments.
Why metal building owners choose Cool Roof Coat
Drops surface temperature dramatically
Reduces panel temperatures by tens of degrees on hot afternoons (project-specific; depends on coating thickness, climate, and existing panel finish), reducing the heat that radiates inside.
Cuts the cooling load at the panel
On conditioned metal buildings, less heat in means less cooling needed. Your site assessment includes an energy projection specific to the building.
Worker comfort in non-conditioned shops
Lower interior radiant temps make warehouses, fab shops, and ag buildings safer and more productive.
Performs even when dirty
Maintains thermal rejection in real-world dirty roof conditions, not just on day one. The CRRC aged rating is the number to hold it to.
Extends panel life
Protects against UV degradation, thermal cycling stress, and rust progression on aging panels.
Impact-tough membrane
Tough acrylic membrane resists impact damage that would dent or pierce uncoated panels.
Where Cool Roof Coat fits on metal buildings
Pre-engineered metal buildings (PEMB)
Standing-seam and R-panel roofs on warehouses, distribution buildings, and light manufacturing.
Agricultural buildings
Equipment storage, livestock buildings, and packing sheds where interior temperatures matter for crops, animals, and operations.
Self-storage facilities
Reduce climate control costs across rows of metal-roofed units.
Aircraft hangars & maintenance shops
Lower radiant heat loads on aircraft, equipment, and personnel during hot-weather operations.
Manufacturing & fabrication shops
Improve worker safety in non-conditioned bays where heat-related illness is a real OSHA risk.
Aging metal panels with rust
Pair with NanoTech's Rust Inhibiting Primer to extend the life of panels that aren't ready for replacement.
Engineered for metal, proven across climates
CRRC aged SRI
Reflectance Rating
Title 24 listed
Energy Code
Miami-Dade
Certification
ISO-9001
Quality System
No-Reportable
VOCs
Up to 20 yrs
NDL Warranty
Every rating above names the body that stands behind it: CRRC aged solar reflectance and SRI describe the coating after three years of field exposure, and Title 24 listing and Miami-Dade certification cover code use. Energy projections for your building are produced during the site assessment, specific to its size, insulation, occupancy, and panel condition. Cool Roof Coat applies with airless spray or 3/4-inch roller, cures in 24 hours, and is walkable in about two hours. For metal panels with active rust, NanoTech's two-in-one Rust Inhibiting Primer passivates the surface in a single step before topcoating.
Metal building cool roof coating FAQs
Can Cool Roof Coat be applied directly over a rusty metal roof?
Surface rust must be addressed before topcoating. NanoTech's Rust Inhibiting Primer is a two-in-one rust converter and primer designed for this purpose: it passivates red rust and creates a sound substrate for Cool Roof Coat in a single step.
How much does a cool roof coating reduce metal building interior temperatures?
By dropping panel surface temperatures by tens of degrees (project-specific, depending on coating thickness, climate, and panel finish), Cool Roof Coat reduces the radiant heat load on the interior. In conditioned buildings that lowers cooling-related HVAC energy use, and your site assessment includes a projection specific to the building; in non-conditioned shops, it improves worker comfort and reduces heat-stress risk.
Will the coating peel or chalk like paint on metal panels?
No. Cool Roof Coat is a high-solids acrylic membrane formulated to bond to metal substrates and resist UV degradation, chalking, and thermal cycling. The flexible film moves with the panel as it expands and contracts through temperature swings.
Does Cool Roof Coat work on standing-seam metal roofs?
Yes. Cool Roof Coat is compatible with standing-seam, R-panel, and corrugated metal roofs. Seams and fasteners are typically detailed with TriSeam, NanoTech's sprayable fiber-reinforced seam sealer, before the cool roof topcoat.
Can the coating be applied while the building stays operational?
Yes. The coating is water-based with no-reportable VOCs and requires minimal PPE to apply. Buildings remain in operation during the work, with the surface walkable in about two hours.
How long does cool roof coating last on metal buildings?
Cool Roof Coat carries No Dollar Limit warranty options of up to 20 years on qualifying systems. Real-world service life on metal panels depends on substrate prep and application thickness, both of which are confirmed during your site assessment.