The science behind sound and heat insulation of doors and windows: How to create a quiet and energy-efficient home?

When we are immersed in sweet dreams, the shrill sound of car horns and the scorching sun streaming through the glass can disrupt our peaceful rest. Fortunately, these disturbances can be avoided. All you need is a well-designed door and window system, akin to an "invisible protective coat" for your home. This system can transform the cacophony of traffic into a distant background noise and shield you from the intense heat outside. When the outside world is softened by this barrier, you will not only enjoy a restful night's sleep but also create a private sanctuary where you can retreat at any time.

The propagation of sound requires a medium, and effective soundproofing for doors and windows hinges on blocking the transmission path of sound waves. Ordinary single-layer glass offers limited noise reduction, while double or triple-glazed glass incorporates an air layer filled with inert gas between the panes. This design utilizes the elasticity of air to absorb and attenuate sound waves, progressively weakening the noise energy. Some high-end doors and windows even include a PVB resin interlayer between the glass panes. This material not only enhances the safety of the glass but also absorbs sound waves at specific frequencies, particularly effective against harsh high-frequency noise.

Ordinary metal window frames are efficient conductors of heat, whereas broken bridge aluminum profiles interrupt the heat conduction pathway by incorporating nylon insulation strips within the aluminum. This design effectively prevents the "thermal bridge" effect. Additionally, the multi-cavity structure enhances the thermal insulation of doors and windows. The surface of Low-E glass is coated with a specialized metal film layer that reflects infrared rays. In summer, it reflects solar heat energy, while in winter, it retains indoor heating radiation. The presence of a hollow layer further amplifies the insulation effect, effectively doubling its performance.