Suitable substrates
- Prepared steel and compatible metal surfaces
- Concrete roofs after substrate assessment
- Industrial building envelopes and outdoor equipment
S05 · Published product
DY-21Solar Reflective Heat-Control Coating
Solar heat management for industrial roofs and outdoor equipment surfaces exposed to weather and ultraviolet radiation.
Product overview
Reflective and barrier-based solar heat control for roofs, structures and exterior equipment.
DY-21 is a waterborne coating described in the source package as a blended aqueous resin system with reflective titanium dioxide, hollow glass microspheres, ceramic fillers and functional additives.
Industrial problems
- Solar heat gain
- Ultraviolet and weather exposure
- Heat accumulation on roofs and outdoor equipment
- Corrosion protection needs at exterior surfaces
Typical equipment and locations
- Industrial metal roofs
- Storage tanks and external pipework
- Cooling towers and outdoor cabinets
- Warehouses, plant envelopes and utility structures
Product features
Source-backed functional profile
Waterborne single-component system
Reflective, radiative and barrier mechanisms described in the source
Good adhesion to prepared surfaces
Resistance to outdoor ultraviolet, rain, snow, salt spray and wind-blown sand described in the source
White finish for solar-reflective performance
Main performance parameters
Published reference data
Values are reproduced from the corresponding Owner-provided source package unless explicitly identified as an Owner correction. They are not presented as a third-party test report.
ColorTypical source value
WhiteSolids contentTypical source value
≥55%FinenessTypical source value
≤20 μmViscosityTypical source value
45–50 s (Ford cup No. 4)AdhesionTypical source value
Grade 1Film hardnessTypical source value
2HSolar reflectance (white)Typical source value
0.86Hemispherical emittance (white)Typical source value
0.85Recoat intervalApplication reference
≥4 hApplication temperatureApplication reference
Preferred ≥10°C; conditional 5–10°CMaximum relative humidityApplication reference
≤85%Application information
Preparation, mixing and application
01
Surface and environment
- Confirm the substrate is clean, dry and suitable for the selected primer or direct application route.
- Keep substrate temperature at least 3°C above the dew point.
- Stop outdoor application in strong wind or rain.
- At 5–10°C, proceed only when drying behavior meets the source condition; stop below 5°C.
02
Application
- Mechanically stir the single-component coating until uniform.
- Apply by roller or airless spray.
- The source recommends two coats with at least 4 hours between coats.
- Use clean water only when viscosity adjustment is required; the source recommends no more than 5%.
Typical applications
Industries, equipment and operating context
01
Typical industries and assets
- Petrochemical and energy facilities
- Industrial and logistics buildings
- Metal roofs and warehouses
- Storage tanks, towers, cabinets and exterior equipment
Packaging and storage
DY-21 · Solar Reflective Heat-Control Coating
- NET 20 kg
- Single-component waterborne pail
- Store at 5–40°C in a dry, cool and clean indoor area; protect from freezing and direct sun.
- Source shelf life: 18 months from packaging date when properly stored.
Approved packaging visualization · not a photograph of a production batch and not a print-production file.
Technical consultation notice
Confirm the actual substrate and operating conditions
Product selection, coating thickness, consumption and application procedures must be confirmed for the actual substrate and operating conditions. Contact the DAYU-X technical team.