How Effective are Ceramic Roof Tiles in Temperature Control?


Ceramic tiles are growing in popularity as a heat-resistant solution to roof tiling. Ceramic roof tiling is like ceramic tile flooring, with a small difference in the purpose. While you'd expect your living room floor tiles to provide cool comfort to your feet, ceramic roof tiles are expected to keep the room cool.

However, regular ceramic tiles have not been as effective in temperature control, especially during the harsh summers of the Northern Indian regions. As an added measure, a few homeowners also opted for ceramic wall cladding. But the solution's cost-benefit ratio seems low.

A more effective alternative to normal ceramic tiles is the cool roof SRI tile. SRI stands for Solar Reflective Index.

What are Cool Roof Tiles?

Cool roof tiles are a great way to control the temperature of a building. Cool roof tiles are specially made glazed vitrified tiles with SRI (Solar Reflective Index) value above 90. These tiles can reflect sunlight that generates heat and reduce the energy cost used for air conditioning during summer. SRI value indicates the percentage of sunlight reflected by the tile. Non reflective tiles will have a lower SRI value.

These are excellent for terraces, roofs and balconies exposed to direct sunlight. Cool roof and wall tiles are manufactured with three-layer glazing on top. The outermost layer is an ultra-low emissivity coating that is highly reflective and thermally conductive.

How Does Cool Roof Tile Work?

Cool roof tiles have a special glaze which provides high reflectance and emittance to the tiles. Thus, cool roof tiles reflect most of the sunlight (reflectance) and quickly radiate the absorbed heat (emittance) back into the atmosphere. This way the base of the tiles remain cooler than the normal surfaces and the building remains cooler.

This makes them an ideal choice for buildings located in hot climates, as they can help keep the interior temperatures cool and comfortable. Cool roof tiles are an effective way to maintain comfortable temperatures while reducing energy consumption.

Cool roof tiles can also help reduce energy costs by reducing air conditioning needs in hot weather. Cool roof tiles can be used in both residential and commercial buildings, making them a great way to maintain temperature control while saving money on energy costs.

Cool roofs offer the added advantage of lowering your electricity bill during hot weather because they reflect more sunlight than normal roofs. They are available in various colours and styles, so they can easily fit into any design aesthetic.

Ordinary Ceramic Vs Vitrified Cool Roof Tiles

Although vitrified tiles are also a type of ceramic tile only, in general terms ceramic tile means a non-vitrified tile. There are visible and technical differences between the two materials and these differences will reflect in their effectiveness as heat resistance or solar reflection:

Ordinary Ceramic Tiles Vitrified Cool Roof Tiles

Low water absorption. However, a glaze is required for higher durability under humid condition

Very low water absorption. A vitrified body is less porous and more durable under humid or wet conditions

Best for wall and floor uses in indoor use

Best for external (exposed) wall, floor (pavements, patios, etc.), and terrace applications

Mechanical strength (weight-bearing capacity) is low

The higher material strength enables higher weight-bearing capacity

Must be glazed for higher durability under floor applications

Special glaze enables the tile to reflect sunlight and radiate heat better than other tiles

Lower scratch, abrasion, and stain resistance

Highly resistant to scratches, stains, and abrasion damage

More common and cheaper

More expensive and available for premium applications


Johnson Cool Roof Tiles

A special selection of tiles from H&R Johnson called Endura Cool Roof SRI (>90) blocks the sun's harmful rays from your structure. It is advised to lay on a terrace, balcony, or courtyard to combat the heat and conserve energy. SRI roof tiles are designed to increase the thermal efficiency of your home.

These tiles are made from a special material that reflects heat away from the roof, reducing the amount of energy needed to keep your home cool in hot climates.

SRI roof tiles can help you save money on energy bills and create a more comfortable living environment for you and your family. SRI roof tiles are vitrified tiles with special glaze material that reflects heat away from the roof, reducing the amount of energy needed to keep your home cool in hot climates.

What Are the Benefits?

A Cool Roof maintains cooler roof temperatures, requiring less energy. A Cool Roof can save a property owner, on average, 7% to 15%* in overall cooling costs over time. The environmental advantages of Cool Roof tiles, which can lessen the effects of smog, CO2 output, urban heat islands, and global warming, are another cool feature.

Johnson Cool Roof Tiles' Advantages

  • 10 to 15% lessen the surface temperature
  • Enhance indoor comfort Lower the need for cooling and save electricity
  • Reduce heat transfer into buildings and the urban heat island effect. Reduce global warming and protect the ozone layer
  • Buildings should use Endura Cool Roof SRI Tiles because they conserve energy and protect the environment.

How Can H&R Johnson Help?

Johnson provides cool roof tiles in different varieties. The desire for a cool roof need not, however, necessitate architectural compromises. You can select from a range of profiles, hues, and blends when purchasing H&R Johnson Cool Roof tiles The application areas include Building roofs, balconies, exterior facades, wall cladding and Pavements.