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SUMMERSHIELD COOL 666
- Top floor too hot
- Reduce terrace heat
- Hot metal sheet roofs
- AC energy saving
SUMMERSHIELD COOL 666 is a Nano UV protected, micro-fibre reinforced, 100% pure acrylic-polyurethane blended solar reflective, heat-reducing and waterproof coating with IR reflective pigments. It reflects 90% of solar infrared rays and 85% of UV rays, achieves a Solar Reflective Index of 113, and reduces energy consumption by up to 30% in air-conditioned premises. Provides crack bridging up to 3mm, waterproof to 7 bar (ASTM C-297), and can be applied from 5°C to 50°C. Recommended for terraces, sloped roofs, MS/ACC/metal sheets and exterior walls. Step 3 topcoat in the RAINPROOF PWR 690 waterproofing system.
Specifications
Figures are controlled laboratory results. Actual site performance varies with substrate, temperature, humidity, application method and workmanship — please confirm the current product datasheet before specification.
Where to use SUMMERSHIELD COOL 666: cool roof paint that also waterproofs
SUMMERSHIELD COOL 666 is a cool roof paint made from an acrylic-polyurethane blend with IR reflective pigments, Nano UV protection and micro-fibre reinforcement. It is a white heat reflective roof coating that also waterproofs. You dilute it with 10% water and apply 2–3 coats by brush or sprayer on terraces, sloped roofs, sheets and exterior walls.
Terraces & Madras Terraces
Reflects 90% of solar infrared rays off the terrace surface.
Sloped Roofs
Brushed or sprayed in 2–3 coats on sloped roofs.
ACC / Iron / GI Sheets
Recommended for ACC, iron and GI sheet roofing.
External Walls
Solar reflective, waterproof coating for exterior walls.
Over Existing Waterproof Coatings
Applies directly over existing waterproof coatings as a reflective topcoat.
Bituminous Membranes
Solar reflective white topcoat over bituminous membranes.
Metal Roofs
Applied on metal roofs at temperatures from 5°C to 50°C.
AC Energy Saving Applications
Cuts AC energy consumption by up to 30% in air-conditioned premises.
Coverage is 1 litre per 50 sq.ft per coat. Heat reflectivity is 87% ± 2 (ASTM-E 903), with 85% UV reflectivity, crack bridging up to 3 mm and no leak at 7 bar. If you are asking how to reduce terrace heat, this solar reflective paint can be recoated in 3–4 hours and fully cures in 4–5 days at 30°C. For full heat resistance, coat all parapet walls along with the terrace or roof.
Armstrong Chemicals supplies SUMMERSHIELD COOL 666 to sites across Telangana, Andhra Pradesh, Karnataka, Kerala and Tamil Nadu, including Hyderabad, Vijayawada, Bengaluru, Kochi and Chennai.
Why SUMMERSHIELD COOL 666 works
IR reflective pigments
The pigments reflect 90% of solar infrared rays, so less of the sun's heat is absorbed by the roof.
Acrylic-polyurethane blend
The blended film stretches more than 200% and bridges cracks up to 3 mm, so it waterproofs as well as cools.
Nano UV protection
UV resistance is tested for 2000 Hrs with no deterioration or colour fade (ASTM-G-154), so the white coating holds up in strong sun.
Reflects 90% of Solar Heat. Blocks 85% of UV. Saves 30% on Cooling.
A Nano UV, micro-fibre reinforced, acrylic-polyurethane solar reflective waterproof coating — SRI 113, 87% heat reflectivity, 3mm crack bridging and no leak at 7 bar. The recommended topcoat in the RAINPROOF PWR 690 waterproofing system.
Get a QuoteHow Dark Roofs Drive Up Cooling Costs
Dark or standard-coloured roofs absorb 80–90% of solar radiation, raising roof surface temperatures and pushing more heat into the building — directly inflating AC energy consumption through Indian summers.
The SUMMERSHIELD COOL 666 Advantage
SRI 113 reflects 90% of solar infrared and 85% of UV — cutting roof surface temperature even in peak summer, reducing AC energy consumption by up to 30%, with 3mm crack bridging and ASTM-tested waterproofing.
Nano UV + Micro-Fibre Reinforced
Nano UV protection agents deliver molecular-level UV resistance; glass micro-fibre reinforcement gives the membrane structural integrity against thermal expansion — preventing the hairline cracks that plain acrylic tiers (like SUMMERPROOF COOL 644) cannot.
RAINPROOF PWR 690 System — Step 3
Recommended as the solar reflective topcoat in the RAINPROOF PWR 690 system: prime with Shineshield WP 305 → waterproof with RAINPROOF PWR 690 → finish with SUMMERSHIELD COOL 666 for SRI 113 and 12–15°C interior temperature reduction.
Reflects Heat. Saves Energy. Protects the Roof.
IR and UV reflectivity from the product description — the highest in the Armstrong solar reflective range.
Documented energy saving for air-conditioned premises — the highest in the Summershield/Summerproof range.
Structural performance alongside solar reflectivity — not just a cool-roof paint.
Two Systems — Standard or Fibre-Reinforced
- Clean the surface from dirt, dust and all contamination; wash thoroughly
- Apply 2–3 coats of SUMMERSHIELD COOL 666 diluted with 10% water by brush or sprayer
- Allow 3–4 hours between coats; full cure 4–5 days at 30°C
- For full heat resistance, cover all parapet walls along with the terrace/roof
Premium Cool-Roof Performance with ASTM-Tested Waterproofing
Nano UV, micro-fibre and SRI 113 — cool-roof and waterproof performance in a single premium coat system.
SRI 113 — Highest in the Range
Solar Reflective Index of 113 (ASTM-E-1980-11) with 87% ± 2 heat reflectivity (ASTM-E 903) — the premium cool-roof specification in the Armstrong range.
Nano UV + Micro-Fibre Reinforced
Nano UV protection and glass micro-fibre reinforcement deliver structural membrane integrity — preventing thermal cracking, withstanding expansion/contraction cycles, and bridging cracks up to 3mm.
3mm Crack Bridging · 7-Bar Waterproof
Waterproof to 7 bar (ASTM-C-297) with 3mm crack bridging (ASTM-C-836) — solar reflective performance without compromising on waterproofing.
Up to 30% AC Energy Saving
Reduces AC energy consumption by up to 30% in air-conditioned premises — combining with SRI 113 to keep interior temperatures lower through peak Indian summers.
How to Use
Clean the surface from dirt, dust and all contamination; wash thoroughly
Apply 2–3 coats of SUMMERSHIELD COOL 666 diluted with 10% water by brush or sprayer
Allow 3–4 hours between coats; full cure 4–5 days at 30°C
Reinforced system: primer coat diluted 20%, embed Fibre Mesh / GEO Fabric, then 3 topcoats at 10% dilution
For full heat resistance, cover all parapet walls along with the terrace/roof
Applicable Areas
Packing, Shelf Life & Coverage
Available in 1, 5, 10 & 20 Litre packs. Shelf life of 12 months from manufacture when stored below 30°C in original sealed containers away from direct sunlight. Coverage: 1 litre per 50 sq.ft per coat. For a full 3-coat system, allow up to 1.6 litres per m² depending on surface porosity.
Application Conditions & Limitations
Application temperature: 5°C to 50°C. Do not apply in rain, high wind or when rain is imminent. Full cure at 30°C: 4–5 days. Cover all parapet walls along with the terrace to achieve the specified heat reflectivity — partial application will not deliver full SRI 113 performance.
Step 3 in the RAINPROOF PWR 690 System
SUMMERSHIELD COOL 666 is the recommended solar reflective topcoat for the RAINPROOF PWR 690 waterproofing system: prime with Shineshield WP 305 → waterproof with RAINPROOF PWR 690 → finish with SUMMERSHIELD COOL 666. Also applies directly over RAINSEAL 200, RAINSEAL RWC 902, RAINSEAL BMW 250, RAINPROOF PU 400 and ROOFCOAT FLEXI 100. For the economical acrylic tier, see SUMMERPROOF COOL 644.
Product Brochure
Download Technical Datasheet
Full specifications, application systems, layering guides, and coverage tables.
Frequently Asked Questions
Ready to protect your structure?
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