INTERVIEWS
Over time, rising energy costs, sustainability targets, and increasing environmental responsibilities made it inevitable for the TS 825 standard to be reconsidered. The 2024 revision marked an important turning point, transforming the standard from a purely technical regulation into a key reference that helps shape the direction of energy-efficient construction. With the updated TS 825, Türkiye has taken a significant step forward in its approach to building energy efficiency.
The new regulation evaluates building energy performance not only in terms of heating demand but also by taking cooling requirements into account, while raising the expected performance level of the building envelope. The increase in the number of climate zones from four to six, lower target U-values, and updated calculation methods have led to the use of higher-performance insulation solutions in building projects.
While these developments offer significant benefits in terms of energy efficiency, they have also introduced new application dynamics on construction sites. In particular, increasing insulation thicknesses require certain technical details and material choices to be reconsidered.
For example, as insulation thicknesses increase, mechanical fixing details in façade applications become increasingly critical. Fixings used to secure thermal insulation boards such as stone wool and XPS to façade systems are fundamental components that mechanically connect the insulation system to the building substrate.
These fixings help prevent insulation boards from detaching from the surface under wind loads, their own weight, and other external forces, while contributing to the long-term stability of the system. However, the increased insulation thicknesses required under the new TS 825 standard also mean that longer and appropriately sized fixings must be selected according to the thickness of the insulation boards.
In some projects, this may create new considerations regarding the availability of suitable fixing sizes, installation speed, and workmanship. For this reason, selecting the correct fixing type, ensuring proper installation according to the characteristics of the substrate, and determining the required number of fixings in accordance with the system design are all essential for the safe and durable performance of the insulation system.
As insulation thicknesses increase, the total load per square meter in façade systems also naturally rises. This can increase the workload for installation teams, particularly during the handling, positioning, and fixing of insulation boards.
It is therefore becoming increasingly important for installers to adapt to these new thicknesses and system details, receive appropriate guidance on correct application techniques, and be supported with suitable equipment. In this way, application quality can be maintained while the long-term performance of the insulation system is also secured.
The new standard requires not only insulation materials but also the other building components that make up the building envelope to be evaluated together. This is because a building’s energy performance does not depend solely on the insulation material used. It is determined by the overall performance created by the wall system, finishing layers, and other building components working together.
For this reason, the thermal properties of wall materials such as brick, autoclaved aerated concrete, and similar products are now being considered more carefully during project design. Ensuring that all materials used in the building envelope are designed to work compatibly as an integrated system is essential for achieving the targeted level of energy efficiency.
Naturally, regulations of this scale can create certain application questions and adaptation requirements during the transition period. However, this should be regarded as a natural part of the process in which the industry reorganizes itself in response to evolving standards.
Although the new TS 825 standard may require certain established application practices to be updated in the short term, in the long term it will make an important contribution to the wider adoption of buildings that are more energy-efficient, more comfortable, and more sustainable.
At Bonus Yalıtım, we see this process not simply as a regulatory change, but as an important transformation that raises quality standards across the industry. In order to ensure that higher performance expectations are met with the right solutions on site, we continue to develop both our product development and technical support processes in line with the requirements of the new standard.
Adopting a holistic approach to energy efficiency, from the initial design stage through to on-site application, stands out as one of the most important requirements of this new era.
Rising Standards in Insulation and New Dynamics on Site
topics in the construction industry. As a result, it can sometimes be perceived as a newly introduced concept or regulation. In fact, TS 825 has been part of the construction sector’s agenda for many years. It was first published in 1989, became mandatory in 2000, and continued to be implemented following an update in 2008.Over time, rising energy costs, sustainability targets, and increasing environmental responsibilities made it inevitable for the TS 825 standard to be reconsidered. The 2024 revision marked an important turning point, transforming the standard from a purely technical regulation into a key reference that helps shape the direction of energy-efficient construction. With the updated TS 825, Türkiye has taken a significant step forward in its approach to building energy efficiency.
The new regulation evaluates building energy performance not only in terms of heating demand but also by taking cooling requirements into account, while raising the expected performance level of the building envelope. The increase in the number of climate zones from four to six, lower target U-values, and updated calculation methods have led to the use of higher-performance insulation solutions in building projects.
While these developments offer significant benefits in terms of energy efficiency, they have also introduced new application dynamics on construction sites. In particular, increasing insulation thicknesses require certain technical details and material choices to be reconsidered.
For example, as insulation thicknesses increase, mechanical fixing details in façade applications become increasingly critical. Fixings used to secure thermal insulation boards such as stone wool and XPS to façade systems are fundamental components that mechanically connect the insulation system to the building substrate.
These fixings help prevent insulation boards from detaching from the surface under wind loads, their own weight, and other external forces, while contributing to the long-term stability of the system. However, the increased insulation thicknesses required under the new TS 825 standard also mean that longer and appropriately sized fixings must be selected according to the thickness of the insulation boards.
In some projects, this may create new considerations regarding the availability of suitable fixing sizes, installation speed, and workmanship. For this reason, selecting the correct fixing type, ensuring proper installation according to the characteristics of the substrate, and determining the required number of fixings in accordance with the system design are all essential for the safe and durable performance of the insulation system.
As insulation thicknesses increase, the total load per square meter in façade systems also naturally rises. This can increase the workload for installation teams, particularly during the handling, positioning, and fixing of insulation boards.
It is therefore becoming increasingly important for installers to adapt to these new thicknesses and system details, receive appropriate guidance on correct application techniques, and be supported with suitable equipment. In this way, application quality can be maintained while the long-term performance of the insulation system is also secured.
The new standard requires not only insulation materials but also the other building components that make up the building envelope to be evaluated together. This is because a building’s energy performance does not depend solely on the insulation material used. It is determined by the overall performance created by the wall system, finishing layers, and other building components working together.
For this reason, the thermal properties of wall materials such as brick, autoclaved aerated concrete, and similar products are now being considered more carefully during project design. Ensuring that all materials used in the building envelope are designed to work compatibly as an integrated system is essential for achieving the targeted level of energy efficiency.
Naturally, regulations of this scale can create certain application questions and adaptation requirements during the transition period. However, this should be regarded as a natural part of the process in which the industry reorganizes itself in response to evolving standards.
Although the new TS 825 standard may require certain established application practices to be updated in the short term, in the long term it will make an important contribution to the wider adoption of buildings that are more energy-efficient, more comfortable, and more sustainable.
At Bonus Yalıtım, we see this process not simply as a regulatory change, but as an important transformation that raises quality standards across the industry. In order to ensure that higher performance expectations are met with the right solutions on site, we continue to develop both our product development and technical support processes in line with the requirements of the new standard.
Adopting a holistic approach to energy efficiency, from the initial design stage through to on-site application, stands out as one of the most important requirements of this new era.