Heat- exchange coating
FAQ for Coating for Outside Walls and Roofs
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What is “heat-exchange coating”? |
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Heat-exchange coating consumes heat within its coating film by changing it into kinetic energy. From the power saving movement after the Great East Japan Earthquake, it was greatly brought up in the NHK news as a new coating.
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So, what are differences between heat-barrier coating and heat-exchange coating? |
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The biggest difference is that heat-exchange coating changes cold (coldness) into kinetic energy and reduces the ambient cold that enters a building through the walls. We can use the blackish-color coating that is used for roofs because this does not have a reflection effect. Black color absorbs heat. In a slightly extreme way of speaking, it gets colder in winter with the heat-barrier coating.
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Isn’t it expensive? Is it worth doing this? |
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Please look at the price comparison chart below. This is a special coating that acquired “Certified Emission Reduction,” which is authenticated by the United Nations though the greenhouse gas reduction project. By coating it over a house, you are contributing to CO2 reduction. Also, you are receiving a Certificate of Carbon Offset 400kg for application of 250 ㎡ (an average building of a full two-story house). Just coating your house can help reducing CO2 emission and stop global warming. Isn’t it incredible?
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Price Chart
【Regular Coating】
Specifications
| Characteristics | It protects walls from rainwater that enters from cracks in the wall; the coating material stretches and the coating film itself stretches. Biotechnology protects your home from mold and moss, and the high moisture permeability protects your home from condensation. 5 year warranty. |
| Price | Please see the chart below |
| Size of Building | Price | Size of Building | Price |
| Outside walls only | Outside walls AND Roof | ||
| 25tsubo | ¥486,000 | 25tsubo | ¥837,000 |
| 30tsubo | ¥583,200 | 30tsubo | ¥1,004,400 |
| 35tsubo | ¥680,400 | 35tsubo | ¥1,227,300 |
- 1tsubo=3.31㎡
Notes:
These prices in the chart above include tax.
An average price for a full two-story house of 30 tsubo is about 820,000 yen (885,600 yen with tax). Please contact us regarding pricing since it varies depending on buildings.
There are different coating products; the prices may vary. It usually costs 30-40% more.
【Heat-Exchange Coating】
Specifications: TOUGH Coat D-47 D-42 Regular price for an application of 4 layers of coating is below. This includes scaffolding.

| Characteristics | The primer that is used for surface preparation is oil-based. TOUGH COAT, the heat-exchange coating, which is used for the final coating, is water-based, it does not smell much. A building with the coating lasts long because the coating protects from the heat in summer and cold in winter. The certificate of carbon offset will be issued. |
| Price | This is based on a full two-story house of 30 tsubo (99.17 m2). The length of the roof sticking out is 1 shaku. (30.3 cm) |
| Size of Building | Price | Size of Building | Price | Size of Building | Price |
| Work With Roof | |||||
| 30 tsubo (as a sample of average sized house) | ¥1,728,000 |
Notes:
1. Scaffolding is made of single pipes.
2. Due to size differences; verandas, balconies, sliding shutters and water drain pipes are
not included in the price.
3. Please ask for an estimate for further details. The price written above includes tax.
An Example of Heat-Exchange Coating Application
Before Application After Application
This work was done from October 9th to 12th in 2012. According to Mr. Hirai from Toyo Engineering Ltd., who was the leader at this work site, the temperature inside the container that had been coated with the heat-exchange coating stayed almost the same throughout the day. On the other hand, the temperature difference between morning/night and daytime in the one without the coating (the picture the left) was about 10°C.
The picture below is Kagohara Daycare Center of Kumagaya City. The pink-colored part showing in the picture is where the heat-exchange coating has been applied. It snowed on January 25th, 2013, and the snow covered the roof. However, you see the snow had melted on the part where the coating was done. Yes, the heat-exchange coating is effective even during winter.
After Coating In Snow fall
