What Is a Heat Reflecting Paint?
A heat reflecting paint is a paint that increases the solar reflectance of a house’s exterior walls, roof, and asphalt. By applying heat reflecting paint, sunlight is reflected at a high reflectance, preventing temperature increases and equipment deterioration.
Applying heat reflecting paint to a house increases energy efficiency and saves on utility costs. According to a study by the Ministry of the Environment, applying heat reflecting paint to a roof can lower the room temperature by approximately 1.8°C.
Related to heat reflecting paint is “heat insulating paint. A heat reflecting paint is a paint that increases solar reflectance, whereas insulating paint reduces thermal conductivity. Thermal insulating paints are effective against both heat and cold.
Uses of Heat Reflecting Paints
Heat reflecting paints, officially called high solar reflectance paint, is used to avoid increases in indoor air temperature by reflecting the sun’s heat. It is mainly used for roofing, exterior walls, waterproof surfaces, and other four applications.
1. For Roofs / Exterior Walls
Heat reflecting paints for roofs and exterior walls are generally made of resins such as urethane. Applying heat reflecting paints to roofs and exterior walls can prevent the room temperature from rising. It also prevents deterioration of the roof and exterior walls to some extent.
2. For Waterproof Surfaces
In addition to roofs and exterior walls, heat reflecting paints may also be used on flat roofs and balconies. Many heat reflecting paints used for these locations have waterproofing properties.
3. Other Applications
In addition to the above applications, heat reflecting paints are used to prevent temperature rises in a variety of other locations, such as corridors and parking lots.
In areas with strong direct sunlight in summer, the effect is even more beneficial. Roof forms that can benefit from heat reflecting paints include straight tiles, metal roofs, vaulted buildings, and tall buildings. These structures are more susceptible to solar heat gain, which is easily transferred to the interior. In the agricultural industry, they are used for buildings that require temperature control, such as agricultural warehouses for storing harvests and grains, and material storage areas.