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 dangerous 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 through three mechanisms working together: high reflectance, high emissivity, and low thermal conductivity. 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 — 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 HVAC load up to 50%
On conditioned metal buildings, less heat in means less cooling needed.
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.
Extends panel life
Protects against UV degradation, thermal cycling stress, and rust progression on aging panels.
Rated for 2-inch hail
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
Up to 50%
HVAC Reduction
2-in (ASTM-tested)
Hail Resistance
-22°F to 212°F
Operating Range
71.8%
Solids by Volume
No-Reportable
VOCs
CRRC · Title 24
Approvals
HVAC savings up to 50% are based on cooling-related energy use on qualifying buildings in cooling-dominant climate zones; actual savings depend on building size, insulation, occupancy, and panel condition — confirmed during the site assessment. 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
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.