SunSheetal: India’s Most Advanced Heat Reflective Paint for Roof and Industrial Surfaces

Every summer, building owners, warehouse managers, and facility engineers face the same punishing reality — rooftop temperatures climbing past 70°C, air-conditioning systems running at full throttle, and electricity bills spiralling out of control. The root cause is simple heat engineering: conventional roofing materials absorb a staggering amount of solar radiation, converting it into thermal energy that floods the interior below.

SunSheetal, manufactured by Novota Thermotech Pvt Ltd, solves this problem at the source. It is a high-albedo, heat-reducing paint for roof surfaces that reflects up to 85% of visible light and 90% of infrared and ultraviolet rays, achieving a Solar Reflective Index (SRI) of 108 — the highest certified value for any cool roof coating in India. When applied in just two coats, SunSheetal has been demonstrated to lower surface temperatures by as much as 29°C in independent field trials.

SunSheetal is a water-based, single-component, high-albedo heat reflective paint coating with a Solar Reflective Index (SRI) of 108, certified by a CRRC-approved laboratory in the USA. It reflects 85% of visible rays and 90% of infrared and UV radiation, reducing rooftop surface temperatures by up to 29°C. The coating is non-toxic, lead-free, chromate-free, and exceeds LEED, Energy Star, and IGBC cool roof specifications. It is effective on concrete, metal, asbestos, polycarbonate, GI, galvalume, aluminium, and modified bitumen surfaces.

Whether you manage commercial buildings, industrial sheds, warehouses, electrical enclosures, petrochemical storage tanks, pipelines, or even vehicle rooftops, this article provides a complete engineering-grade understanding of how SunSheetal cool roof coating works, where it applies, and why it outperforms competing heat reflective paint products in India.

Why Heat Gain Through Roofs Is a Critical Engineering Problem

Before evaluating any reflective paint for roof applications, it is essential to understand the thermal physics behind rooftop heat gain.

Solar radiation arriving at a building envelope contains energy in three spectral bands:

• Visible light (approximately 43% of total solar energy)
• Near-infrared radiation (approximately 52%)
• Ultraviolet radiation (approximately 5%)

When this radiation strikes a conventional uncoated roof surface — whether concrete, metal, asbestos, or bitumen — a large portion is absorbed and converted into thermal energy. On a typical summer afternoon in India, an uncoated metal roof can reach 64°C to 78°C, while ambient temperature hovers around 37°C to 42°C.

This absorbed heat then conducts through the roof substrate and radiates into the interior space, forcing HVAC systems to consume significantly more energy. Studies by the Bureau of Energy Efficiency (BEE) estimate that roof heat gain accounts for 50% to 70% of total cooling load in single-storey structures such as warehouses, factories, and sheds.

The engineering solution lies in two complementary heat-transfer mechanisms: solar reflectance (bouncing incoming radiation back into the atmosphere) and thermal emittance (re-radiating absorbed heat as longwave infrared radiation). An ideal cool roof coating maximises both values simultaneously.

How SunSheetal Heat-Reducing Paint Works

SunSheetal is a 100% indigenous R&D product engineered on the twin principles of reflectance and emittance. Unlike ordinary white paints that merely appear reflective, SunSheetal incorporates specially formulated high-reflective and emissive ceramic ingredients suspended in a water-based emulsion.

Solar Reflectance – Deflecting the Sun’s Energy

SunSheetal achieves a solar reflectance of 0.855, measured using LEED-approved ASTM methods. This means 85.5% of incoming solar energy is reflected away from the surface rather than being absorbed. The ceramic micro-particles within the coating are engineered to reflect radiation across the full solar spectrum — visible, near-infrared, and UV — rather than only in the visible range.

Thermal Emittance – Releasing Residual Heat

The remaining 14.5% of solar energy that the coating absorbs must be managed efficiently. SunSheetal’s thermal emittance of 0.882 ensures that absorbed heat is rapidly re-radiated as longwave infrared energy back into the atmosphere, preventing it from conducting through the roof substrate.

Solar Reflective Index – The Combined Performance Metric

The Solar Reflective Index (SRI) combines reflectance and emittance into a single performance number. A standard black surface has an SRI of 0, while a standard white surface scores approximately 100. SunSheetal’s SRI of 108, certified by a CRRC-approved laboratory in the USA, exceeds even the theoretical standard white benchmark. This positions it as the highest-performing cool roof coating certified in India.

Field-Tested Temperature Reduction Data

Theory is important, but real-world performance data is what separates a credible product from marketing claims. SunSheetal has been field-tested under rigorous conditions. Demo trial results obtained on 20th April 2012 at 2:00 PM in Jamshedpur, India, with an ambient temperature of 37.6°C, are tabulated below:

These results confirm that SunSheetal delivers a surface temperature reduction ranging from 17.5°C to 29.1°C depending on the substrate material, with the most dramatic improvements occurring on dark, high-absorptance surfaces such as bitumen and tar felt.

Complete Technical Specifications

For engineers, procurement managers, and specifiers who need detailed product data, the following table summarises the complete technical profile of SunSheetal heat reflective paint:

For high-temperature industrial applications beyond the scope of SunSheetal, Novota also offers HeatXperse thermal dispersal coating designed for extreme service conditions.

Where to Apply SunSheetal Across Industries

One of the defining strengths of SunSheetal heat reflective paint is its versatility. The coating is effective across virtually every substrate and building type encountered in Indian construction and industry.

Residential and Commercial Buildings

For residential apartments, commercial complexes, and certified green buildings, SunSheetal acts as a passive cooling layer on RCC, asbestos, and concrete rooftops. Residents experience noticeably improved indoor comfort, while building operators report measurable reductions in air-conditioning loads and electricity costs.

Industrial Sheds, Godowns, and Warehouses

Metal-roofed industrial structures suffer the worst heat gain. GI, galvalume, aluminium, and powder-coated metal roofs absorb enormous amounts of solar radiation. Applying SunSheetal on warehouse roofs can drop interior temperatures significantly, protecting stored goods and improving worker safety in compliance with factory heat-stress regulations.

Electrical Enclosures and Control Panels

Outdoor electrical enclosures and control rooms housing sensitive electronics, switchgear, and transformers are vulnerable to heat-induced failures. SunSheetal applied on the external surfaces reduces thermal load, extending equipment lifespan and reducing cooling energy for panel air-conditioners.

Tanks, Pipelines, and Petrochemical Storage

Storage tanks for water, chemicals, petroleum products, and LPG experience significant thermal cycling that causes material fatigue and product degradation. SunSheetal lowers thermal shock on metallic substrates, reduces evaporation losses, and helps maintain consistent internal temperatures for temperature-sensitive stored materials.

Vehicle Rooftops and Cold Storage Facilities

Transport vehicles that spend extended hours under direct sun benefit substantially from reflective roof coatings. SunSheetal has been applied on bus rooftops, railway coach exteriors, and fuel tanker surfaces to reduce cabin temperatures and lower the risk of thermal expansion in stored liquids.

For cold storage buildings, every degree of external heat gain translates directly into additional refrigeration energy. By applying this heat-reducing paint for roof surfaces, cold storage operators can significantly lower compressor run times and energy expenditure.

Compatible Surface Types

SunSheetal has been tested and proven effective on the following surfaces:

• Concrete (RCC) and asbestos sheets
• Powder-coated metal and galvanised iron (GI)
• Galvalume and aluminium
• Polycarbonate and fibreglass
• Modified bitumen and modified asphalt

This broad substrate compatibility eliminates the need for multiple specialty coatings, simplifying procurement and application for large-scale projects. For surfaces requiring specialised sealing before coating, Novota’s TempSeal high-temperature sealant provides an ideal primer solution.

Step-by-Step Application Guide

Achieving the rated performance of any reflective paint for roof applications depends heavily on proper surface preparation and application technique.

Surface Preparation

1. Thoroughly rinse and clean the surface, removing all dirt, loose material, flaking paint, rust, algae, fungus, or other contaminants.
2. Power-jet wash using mild detergent. Wire brushing or emery paper may be used for mechanical cleaning.
3. Repair surface cracks, holes, separation gaps, and open seams using patching cement or modified mortar.
4. Wash the cleaned area with water.
5. Ensure the surface is slightly moist (damp, not wet) before applying the first coat.

Coating Application and Precautions

1. Stir SunSheetal thoroughly before and during use, ensuring no settlement.
2. Apply a thin first coat using a roofing brush, long-nap roller, or suitable airless spray equipment on the cleaned and washed surface.
3. Wait a minimum of 6 hours before applying the second coat.
4. Apply a thick second coat perpendicular to the direction of the first coat for optimum coverage.
5. Ensure the coated area does not come in contact with water for a minimum of 8 hours after the final coat.
6. Full curing occurs in 48 hours at 30°C.

Keep the following precautions in mind during every application:

• Do not dilute SunSheetal. Use it as supplied.
• SunSheetal must always remain the final (outermost) coat. Do not overcoat.
• Do not apply within two hours of sunset or during rain, fog, or freezing conditions.
• Application temperature should be between 8°C and 60°C, with 16°C to 34°C recommended.
• Total dry film thickness across 2 coats equals 100 microns.

Certifications, Safety, and Environmental Compliance

SunSheetal is not merely a heat reflective paint — it is a Green Building Compliant product that exceeds the requirements of multiple international and national certification standards:

• Exceeds LEED cool roof specification
• Exceeds Energy Star cool roof requirements
• Exceeds IGBC (Indian Green Building Council) cool roof specification
• SRI certified by CRRC-accredited laboratory, USA
• Tested using LEED-approved ASTM methods

For architects and sustainability consultants pursuing green building certifications, specifying SunSheetal on roof surfaces directly contributes credits under the “Heat Island Effect – Roof” category in LEED and IGBC rating systems.

Unlike solvent-based industrial coatings, SunSheetal has also been engineered for minimal environmental and health impact:

• Water-based formulation — no hazardous solvents
• VOC content under 50 g/L — well below regulatory limits
• Lead-free and chromate-free
• Non-flammable and non-hazardous for transport
• Contributes to sustainable living and reduced urban heat island effect
• Excellent resistance to fungi, algae, and moss — no biocide leaching concerns

This safety profile makes SunSheetal suitable for application on hospitals, schools, food processing plants, pharmaceutical facilities, and other sensitive environments where toxicity is a concern.

Durability and Long-Term Performance

A common concern with any heat-reducing paint is how long the reflective properties last. SunSheetal addresses this with engineered durability:

• 5-year certified product life, validated by independent laboratory test reports
• Passes 500 hours of accelerated ageing testing
• Abrasion resistance of 6000 cycles
• NIL water absorption prevents substrate damage
• Very low dirt pickup maintains reflective performance over time
• Enhanced UV resistance prevents chalking and degradation
• Chemical resistance to mild acidic and alkaline environments

The combination of UV stability, microbial resistance, and low dirt pickup ensures that the coating’s SRI value degrades minimally over its rated lifespan, delivering consistent energy savings year after year.

Trusted by Leading Indian Corporations

SunSheetal’s performance has been validated not just in laboratories but in real-world deployments across major Indian corporations, including:

• Tata Chemicals Limited
• Siemens
• L&T Construction
• Mahindra Reva
• GlaxoSmithKline (GSK)
• Mahindra Lifespaces
• Lodha Group
• MAHAVITARAN (Maharashtra State Electricity Distribution Co.)
• Wipro
• IFFCO
• Pioneer Group
• SGS

This client roster spans manufacturing, pharmaceuticals, real estate, energy, automotive, and infrastructure — a testament to SunSheetal’s cross-industry applicability and trusted performance. For projects requiring bespoke formulations, Novota also provides custom industrial coating solutions tailored to specific substrates and operating conditions.

SunSheetal vs Ordinary White Paint

Many building owners wonder whether standard white exterior paint can achieve the same cooling effect. The answer, from a heat engineering perspective, is definitively no.

The key differentiator is SunSheetal’s ability to reflect near-infrared radiation, which carries over half of all solar energy. Ordinary white paints reflect visible light effectively but allow NIR energy to pass through and be absorbed as heat. This fundamental engineering distinction is why ordinary paint never qualifies for cool roof credits.

Cost-Benefit Analysis and Return on Investment

Investing in SunSheetal delivers returns across multiple dimensions:

• Reduction in air-conditioning energy consumption by 15% to 30%, depending on building type and climate zone
• Extended lifespan of roofing substrates due to reduced thermal shock and UV degradation
• Lower HVAC maintenance and replacement costs
• Contribution toward green building certification credits, which increase property value
• Reduced carbon footprint and contribution to ESG reporting goals
• Coverage of 50 sq. ft. per kg (2 coats) delivers cost-effective application for large roof areas

For warehouses and industrial facilities where HVAC costs constitute a major operational expense, the payback period for a SunSheetal application is typically 12 to 24 months.

Frequently Asked Questions About SunSheetal

What is SunSheetal and how does it reduce heat?

SunSheetal is a high-albedo, water-based heat reflective paint coating manufactured by Novota Thermotech Pvt Ltd. It reduces heat by reflecting 85.5% of solar radiation and emitting 88.2% of absorbed heat as infrared radiation, preventing thermal energy from entering the building through the roof.

What is the Solar Reflective Index (SRI) of SunSheetal?

SunSheetal has a certified SRI of 108, which is the highest for any cool roof coating in India. This SRI value is certified by a CRRC-approved laboratory in the USA using LEED-approved ASTM testing methods.

On which surfaces can SunSheetal be applied?

SunSheetal is effective on concrete (RCC), asbestos, GI sheets, galvalume, aluminium, powder-coated metal, polycarbonate, fibreglass, modified bitumen, and modified asphalt surfaces. It is suitable for roofs, walls, tanks, pipelines, and vehicle exteriors.

How many coats are required and what is the coverage rate?

Two coats are required, with a minimum gap of 6 hours between coats. The total dry film thickness is 100 microns. Coverage on smooth surfaces is approximately 50 sq. ft. (4.65 sq. m) per kilogram for two coats combined.

Is SunSheetal safe and environmentally friendly?

Yes. SunSheetal is water-based, non-toxic, lead-free, chromate-free, and has very low VOC content (under 50 g/L). It is non-flammable and meets green building compliance standards including LEED, Energy Star, and IGBC specifications.

How long does the SunSheetal coating last?

SunSheetal has a certified product life of 5 years, validated by independent lab test reports. It passes 500 hours of accelerated ageing testing and has an abrasion resistance of 6000 cycles, ensuring long-term reflective performance.

Can SunSheetal be applied on storage tanks and pipelines?

Absolutely. SunSheetal is widely used on petrochemical storage tanks, water tanks, LPG tanks, and exposed pipelines. It reduces thermal cycling, lowers evaporation losses, and helps maintain consistent internal temperatures for stored materials.

Conclusion – Choose SunSheetal for Smarter Thermal Management

Heat gain through roofs is not merely a comfort issue — it is an engineering challenge with direct financial, operational, and environmental consequences. Whether you manage a commercial building in Mumbai, a warehouse in Chennai, a petrochemical tank farm in Gujarat, or a fleet of transport vehicles operating across India, uncontrolled solar heat absorption is costing you money and shortening the life of your assets.

SunSheetal, with its SRI of 108, field-proven temperature reductions of up to 29°C, and certifications that exceed LEED, Energy Star, and IGBC standards, represents the most advanced heat reflective paint solution available in India today. It is a single-component, ready-to-use coating that works on virtually every roofing surface, delivers measurable energy savings, and is backed by a 5-year certified lifespan.

Take the next step toward cooler buildings, lower energy bills, and a reduced carbon footprint. Request a technical consultation from Novota Thermotech today for a site assessment or product quotation.

📧 Email: info@novota.in
🌐 Website: Novota Thermotech official website
📞 Phone: +91 8928770345