Solar protection and energy efficiency: Gradhermetic solutions for sustainable buildings
Solar protection is one of the fundamental elements for improving the energy efficiency of any building. A properly designed solar control system makes it possible to reduce overheating in summer, take advantage of solar radiation during winter and improve the thermal and visual comfort of indoor spaces, while reducing energy consumption.
In a context in which sustainable architecture and nearly zero-energy buildings are becoming increasingly prominent, solar protection is no longer a complementary element but an essential part of the building envelope. In this regard, external solar protection systems play an especially important role in high energy-efficiency projects and in buildings certified under standards such as Passivhaus.
The importance of solar protection in architecture
Solar radiation is a natural, renewable and free source of energy. However, properly managing its incidence on buildings is essential to ensure optimal habitability conditions throughout the year.
Appropriate solar protection makes it possible to control both heat gain and natural light, reducing the need to use climate control and artificial lighting systems. The result is greater comfort for users and significant energy savings.
Solar protection in summer
During the warmer months, excess solar radiation causes a considerable increase in the indoor temperature of buildings, increasing cooling demand.
External solar protection systems act as a first barrier against radiation, preventing heat from directly reaching glazed surfaces. This reduces overheating in indoor spaces, minimizes glare and lowers the energy consumption associated with air conditioning.
Solar gains in winter
During the colder months, solar protection can also contribute to making use of solar energy. Proper adjustment of the slats makes it possible to encourage the entry of solar radiation during the hours of greatest insolation, taking advantage of natural heat gains while increasing the entry of natural light.
The strategy must be adapted to the orientation of each façade and the path of the sun. In the northern hemisphere, for example, south-facing façades receive greater solar exposure during winter, so proper adjustment of the slats can help make use of this energy. On east- and west-facing orientations, where radiation strikes at lower angles, the design and arrangement of solar protection elements become particularly important.
When outdoor conditions change, the position of the slats can be adapted to help maintain more stable indoor conditions. In this way, solar protection no longer acts solely as a shading element and becomes part of a bioclimatic strategy adapted to the orientation, time of year and needs of the building.
This dynamic management of solar radiation can help to reduce heating demand, improve the building’s energy efficiency and promote the thermal and visual comfort of its occupants.
Active and passive solar protection
Bioclimatic design distinguishes between two main types of solar protection: passive and active solutions.
Passive protection is determined by permanent architectural elements, such as overhangs, balconies, eaves, vegetation or adjacent buildings, which provide shade naturally.
Active protection, meanwhile, makes it possible to adapt the degree of shading according to climatic conditions and user needs. This group includes movable louvres, adjustable shutters and other regulatable systems that optimize the building’s energy performance throughout the year.
Automation and intelligent solar control
The incorporation of home automation systems and automated controls takes solar protection to a higher level.
Using solar radiation, temperature or wind sensors, the systems can automatically regulate the position of the slats to optimize natural light entry and minimize heat gains.
This intelligent management helps reduce energy consumption, improves indoor comfort and is particularly recommended in high energy-efficiency and nearly zero-energy buildings.
Benefits of Gradhermetic solutions
The installation of Gradhermetic solar protection systems provides important advantages from both an energy and architectural standpoint:
- Reduction in energy consumption associated with heating and cooling.
- Improved thermal and visual comfort in indoor spaces.
- Regulation of natural light entry and ventilation.
- Reduction of glare and overheating.
- Greater building energy efficiency.
- Architectural integration through a wide variety of designs, materials and finishes.
- Contribution to compliance with sustainable building standards such as Passivhaus.
Innovation and in-house manufacturing
Gradhermetic is one of the few companies in the sector with a fully integrated production process.
From recycling aluminium in its own foundry to the manufacture, painting and forming of the different components, the company controls the entire production process to guarantee the highest quality and durability of its systems.
The use of materials such as aluminium, steel, natural wood and bamboo, together with a strong commitment to innovation and sustainability, makes it possible to develop solutions that improve both the energy performance and the architectural appearance of buildings.
