AC or Asbestos Cement sheets are one of the most widely used roofing materials across Indian factories, warehouses, poultry farms, and rural and semi-urban structures – valued for being low-cost, durable, and easy to install. But there’s a catch. Asbestos cement sheets absorb and retain heat rapidly, turning the roof surface into a virtual furnace during peak summer hours. This heat radiates directly into the space below, driving up indoor temperatures, spiking air-conditioning costs, and putting stress on everything from stored goods to livestock to workers on the shop floor.
COOLROOF®, a high SRI (122) heat-reflective paint tested as per ASTM/LEEDS standards, is specially formulated to work on AC sheet roofs – reflecting solar heat back before it ever enters the building, so your roof stays cooler, your energy bills stay lower, and your sheets last longer.
Why AC Sheet Roofs Get So Hot
Asbestos cement sheets typically come in dark or naturally grey tones with low solar reflectance, meaning they absorb the majority of incoming solar radiation instead of bouncing it away. This is exactly where a heat-reflective coating for AC sheets makes the difference, not by replacing the roof, but by upgrading its performance. Combined with their thin profile and minimal built-in insulation, this leads to:
- Roof surface temperatures soaring well above ambient temperature in peak summer
- Rapid heat transfer into warehouses, sheds, poultry units, and factory floors
- Increased dependence on fans, coolers, and air conditioning
- Long-term brittleness, cracking, and reduced sheet life due to constant heat-expansion and contraction cycles
- Uncomfortable, unsafe working conditions for staff and livestock housed underneath
How COOLROOF® Works on Asbestos Cement Sheets
COOLROOF® is a sun-reflective, thermal-insulating roof coating engineered with advanced nano-additive technology. When applied to AC sheet roofing, it forms a durable, high-albedo layer that:
Reflects Solar Heat – With a Solar Reflectance of 95% and Thermal Emittance of 91%, COOLROOF® delivers an SRI value of 122, well above the green-building benchmark of 78, significantly cutting the heat gain through your asbestos roof.
Reduces Surface Temperature – Expect a surface temperature drop of up to 20°C on AC sheet roofs, depending on ambient conditions and sheet profile.
Seals & Protects Ageing Sheets – Many AC sheet roofs are older installations with micro-cracks and porous surfaces. COOLROOF®’s coating also improves washability and adds a protective, dirt-resistant, low-maintenance top layer.
Withstands All-Weather Conditions – Formulated for durability against extreme sun, rain, dust, and thermal cycling without chalking, peeling, or degrading over time.
Supports Green Building Compliance – As an ultra-low-VOC, GRIHA- and IGBC-approved high-albedo coating, COOLROOF® helps AC sheet facilities move toward sustainable, energy-efficient operations.
Benefits of Cool Roof Paint on AC (Asbestos Cement) Sheets
| Benefit | Impact on Your AC Sheet Roof |
| Heat Resistance | Lowers roof surface temperature by up to 20°C |
| Energy Savings | Reduces cooling and AC load, helping cut electricity bills by up to 30% |
| UV Resistance | Protects AC sheets from sun-induced brittleness and surface degradation |
| Durability | Provides reliable performance through sun, rain, and dust exposure |
| Low Dirt Pickup | Keeps the roof cleaner with minimal maintenance |
| Extended Roof Life | Reduces thermal stress that can lead to cracking in older AC sheets |
| Improved Comfort | Creates cooler working, storage, or living spaces beneath the roof |
Where This Matters Most: AC Sheet Roofs Across Industries
AC sheet roofing is common across several sectors we serve, and COOLROOF® is engineered to deliver measurable cooling performance in each:
Logistics Parks & Tin Sheds – protect stored goods from heat damage
Warehouses & Storage Units – keep inventory and staff areas comfortable
Poultry & Livestock – maintain safe temperatures for animal health and productivity
Manufacturing Sheds – improve shop-floor working conditions
Cold Storage Facilities – reduce the cooling load on refrigeration systems
Why Choose COOLROOF® for Your Asbestos Cement Roof
Proven Performance
SRI value of 122, tested as per ASTM/LEEDS standards
Certified for Green Buildings
Approved by both GRIHA and IGBC for high albedo coatings
Compatible Across Roof Types
Works seamlessly on Asbestos, RCC, Concrete, Metallic, GI, Galvalume, Pre-Coated and Poly-Flex surfaces, so mixed-roof facilities can standardise on one solution
Turnkey Service
From site visit and inspection to material supply, professional application, and single-point warranty
Trusted at Scale
Applied across millions of sq. ft. for clients including Indian Oil, Indian Army, RBI, Google India, and more
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Frequently Asked Questions – Cool Roof Paint for AC Sheets
Can COOLROOF® be applied directly on old or weathered asbestos cement sheets?
Yes. COOLROOF® is compatible with asbestos sheets, including aged installations. Our team assesses the roof condition during a site visit and recommends any surface preparation needed before application.
How much temperature reduction can I expect on an AC sheet roof?
You can expect a surface temperature reduction of up to 20°C, depending on the sheet’s age, orientation, and local weather conditions.
Will this coating help reduce cracking in my AC sheets?
Yes. By reducing the intensity of daily heating and cooling cycles, the coating lowers the thermal stress that leads to brittleness and cracking in ageing asbestos sheets.
Is COOLROOF® safe and compliant for use over asbestos roofing?
COOLROOF® is a surface-applied, ultra-low-VOC coating that does not disturb the underlying sheet material. It simply forms a protective, reflective layer on top.
How long does COOLROOF® last on an AC sheet roof?
The coating is UV-resistant, waterproof, and fungus-resistant, engineered for long-term performance with minimal maintenance occasional cleaning is enough to maintain reflectivity.
Do you provide application services for AC sheet roofs?
Yes, we offer full turnkey services which include inspection, material supply, professional application, and a single-point warranty through our execution team.
Ready to Cool Down Your AC Sheet Roof?
Stop losing money to heat gain through your asbestos cement roof. Get a free site assessment and see how COOLROOF®’s high SRI heat reflective paint can lower your roof temperature, cut your electricity bills, and protect your sheets for years to come.
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