What makes Summershield Cool 666 different from a normal waterproofing coating?

Summershield Cool 666 is a premium, elastomeric, heat-reflective coating engineered to act as a 'White Mirror' for the building. Unlike a standard coating that only waterproofs, it serves a dual purpose — providing elite-level waterproofing while simultaneously reflecting the sun's destructive energy away from the structure. It carries a Solar Reflective Index (SRI) of 113 (ASTM E-1980-11), the highest in the Armstrong range.

How does Summershield Cool 666 reduce indoor temperatures?

It works in three ways. First, it reflects UV rays before they can penetrate and break down the slab. Second, its specialized pigments bounce infrared (IR) radiation — the component of sunlight responsible for heat — back into the atmosphere; independently tested heat reflectivity in its white finish is 87% ± 2 (ASTM E-903). Third, for any heat that is absorbed, the coating has high thermal emittance, meaning it sheds that heat back into the sky rather than letting it soak into the rooms below, which prevents the 'oven effect' at night.

How much can Summershield Cool 666 lower indoor temperatures?

The product is stated to reduce indoor room temperature by 3°C to 5°C, which reduces how often the air conditioning system needs to run — Armstrong's own material cites up to 30% lower energy consumption in air-conditioned premises as a result.

How is Summershield Cool 666 applied, and how flexible is the finished coating?

It's applied as a 3-layer system — two to three coats diluted 10% with water, brush or sprayer — to build a thick, durable, seamless protective skin; three coats are enough to meet SRI standards. The pure white 'mirror' finish comes from high-grade titanium pigments formulated to maximize solar reflectance. Once cured (4–5 days at 30°C), the film has an elongation at break of over 200% (ASTM D-638) and bridges cracks up to 3mm wide without cracking (ASTM C-836), and is formulated to resist chalking and yellowing so the reflective effect holds up over time.

Does Summershield Cool 666 also waterproof, or only reflect heat?

Both. Independently tested, it shows no water leakage at 7 bar pressure (ASTM C-297) and an adhesion strength above 1.5 N/mm² (ASTM D 4541). The resulting 3-layer elastomeric membrane seals the roof and provides a waterproof barrier against rain seepage, alongside its heat-reflective function. Note: the product is recommended for light foot traffic only, not for machinery or equipment movement.

Protecting Your Property with the "White Mirror": Armstrong Summershield Cool 666

By Dr.Ln.Ramana Murty

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The Product: Armstrong Summershield Cool 666

Armstrong Summershield Cool 666 is a premium, elastomeric, heat-reflective coating designed to act as a White Mirror for your building. Unlike standard coatings, it is engineered as a high-performance membrane that serves a dual purpose: it provides elite-level waterproofing while simultaneously reflecting the sun's destructive energy away from the structure.

Key Features and Properties

To provide total protection, Summershield Cool 666 is built with specific technical properties:

Pure White "Mirror" Finish: Formulated with high-grade titanium pigments to maximize solar reflectance.
3-Layer Application System: Applied in three distinct coats to create a thick, durable, and seamless protective skin.
High Solar Reflectance Index (SRI): A superior SRI rating ensures the surface stays cool even under the midday sun.
Elastomeric Flexibility: With high elongation properties, the coating stretches and contracts with the building, effectively bridging hairline cracks.
Algae and UV Resistance: Formulated to resist "chalking" (turning to powder) and yellowing, ensuring the mirror effect lasts for years.

How It Works: The Science of Reflection

Summershield Cool 666 does what it does by manipulating how light and heat interact with your roof.

Reflecting the Damage: UV rays are high-energy waves that break down the chemical bonds of concrete. By acting as a white mirror, the coating reflects these rays before they can penetrate the slab.
Blocking the Heat: Sunlight contains Infrared (IR) radiation, which is responsible for heat. The specialized pigments in the 666 formula bounce these IR waves back into the atmosphere.
Thermal Emittance: For any heat that manages to be absorbed, the coating has high emittance, meaning it "sheds" heat back into the sky rather than allowing it to soak into the rooms below. This prevents the "oven effect" in your home at night.

Advantages to the Customer

Reduced Indoor Temperatures: Expect a drop in internal room temperature by 3°C to 5°C, making living spaces significantly more comfortable.
Lower Energy Bills: By keeping the building naturally cooler, your air conditioning system runs less frequently, leading to massive savings on electricity.
Leak Prevention: The 3-layer elastomeric membrane seals the roof, providing a waterproof barrier that prevents rain seepage.
Structural Integrity: By reducing "Thermal Shock," the coating prevents the roof from cracking, extending the life of your entire building.

Conclusion: A Smart Investment for Your Property

Investing in Armstrong Summershield Cool 666 is not just about comfort; it is about asset preservation. By transforming your roof into a reflective shield, you are defending your property against the twin threats of heat and water. It is a one-time investment that pays for itself through reduced energy costs and the elimination of expensive structural repairs. Protect your people and your property with the ultimate solar mirror.

Frequently Asked Questions

For the full method on any roof, see the Roof Waterproofing Guide.