Taking care of overheating problem in the building with no air-conditioning installed

Problem of highly increased inside temperature may occur in various types of building, including warehouses, office and production facilities. In case of production facilities the key issue is not only thermal comfort of people staying under the roof, but also effectiveness and quality of work and final product itself.

One of the facility where the problem of roof overheating and increased temperature inside the building is crucial for business is poultry farm. In order to better understand the scale of the problem temperature comparison measurement was maintained in one of this type of building. A problem of interior overheating was recognized in the poultry farm building which largely compromised the effectiveness of breeding and was liable to incur losses in livestock. The roof of 3600m2 was made from trapezoidal galvanized steel sheet. To provide a solution to identified problem, the roof of the facility was covered with the Cool-R coating. In order to conduct the benchmark of the effectiveness of the product and its effect on the internal thermal comfort only a part of the roof was coated.

The coating was applied on the part of the roof up to the natural partition created by an internal wall to ensure verification and monitoring of temperature. The ongoing monitoring of the temperatures enabled to confirm the effectiveness of the coating and its beneficial effect on the thermal comfort inside the building.

A network of temperature sensors was respectively mounted on the roof surface (1, Image 1) and under the roof (2, Image 1). The localization of the sensors allowed to monitor the temperature in detail and to show the actual effects of the Cool-R coating on the thermal facility. The measurements and analysis of the results were performed by the Faculty of Architecture and Environmental Engineering of the Łódź University of Technology.

Image 1 – sensors location

The effects of the application of Cool-R on the facility were carefully analyzed by reading the data supplied by the sensors placed on and under the roof. It is easy to notice that the temperature in the area protected by the Cool-R coating is lower and its daily amplitude ranges between 14 and 24oC. In comparison the temperature of the area unprotected by Cool-R rises up to 46oC during the same time span.

Detailed measurement values for both types of sensors are presented in the charts below.

Temperature chart – sensor No. 1 – temperature on the roof

Temperature chart – sensor No. 2 – temperature under the roof

Such rapid temperature rise poses a considerable threat to the effectiveness of breeding and can incur losses in livestock. As a final result of Cool-R application the biggest challenge for the poultry farm owner, in form of roof overheating, has been solved.

Application of highly reflective and waterproofing Cool-R coating leads to:

– effective and swift reduction of temperature under the roof in the breeding hall

– improvement of thermal comfort in the whole building

– formation of the waterproofing layer which prolongs roof durability by 10 year


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