Aluminium carpentry according to the TBC
Aluminium is a material that usually meets all the requirements of the Technical Building Code (TBC) as part of the building envelope.
This element helps the building industry adapt to sustainability demanded by new regulations.
Aluminium meets the minimum values for heat transfer through glass (U-value).
Aluminium carpentry turns buildings into more liveable and sustainable spaces. The solutions comply with the strictest U-values and have a thermal transmittance in accordance with TBC requirements.
Is the thermal envelope affected by aluminium?
This building element plays a key role in the air conditioning of buildings and the reduction of energy loss. _x000D_
Information on aluminium carpentry is available in the Basic Energy Saving and Thermal Insulator Document and shall comply with the following:
- Thermal transmittance.
- Surface condensation.
- Resistance to wind actions.
- Air permeability.
- Acoustic insulation.
Thermal transmittance is one of the parameters that define the thermal envelope of the building. It usually has weak points on the facade holes, both in the frame and in the glass. Its value depends on the climate zone in which it is installed, the percentage of holes in the facade, and the transmittance limit of the wall.
The transmittance of the profiles and the glass is calculated separately.
The U-value in a window measures the thermal losses of each element. Because of this, once the type of aluminium carpentry has been chosen, the transmittance of the glass is determined. Be careful when following a table. It may be from a time in which air conditioning was not considered, and energy efficiency plays a key role nowadays.
The surface condensation of aluminium carpentry is based on the temperature factors of the interior surface and the minimum interior surface in January. The temperature of the interior surface must be higher than the minimum interior surface temperature. Regarding wind actions, aluminium must be more resistant than the wind force to prevent deformations and collateral effects on the thermal and acoustic insulation.
Air permeability is a characteristic of a closed window that lets air in under differential pressure. This property directly affects the energy saving and thermal insulation, as well as the air renewal or acoustic insulation in low permeability. Acoustic insulation is basically the capacity to prevent sounds from entering the building. A basic requirement to comply with the health and comfort standard.
In short, aluminium is a highly qualified building element for any task related to energy saving and thermal insulation of a building.