Why is proper sealing important in building envelopes?

Proper sealing in building envelopes is crucial primarily for preventing air leaks. Air leakage can lead to several issues that negatively impact a building’s energy efficiency, comfort, and durability. When air leaks occur, conditioned air can escape, and unconditioned air can infiltrate, resulting in higher energy consumption for heating and cooling. This not only drives up utility bills but can also lead to uneven temperatures within the building, making it uncomfortable for occupants.

Additionally, uncontrolled air movement can contribute to moisture problems, which may lead to mold growth, structural damage, and deterioration of building materials. Therefore, effective sealing helps to maintain a controlled indoor environment, supporting energy efficiency and occupant comfort, while also protecting the building's integrity over time.

While reducing noise pollution and enhancing aesthetic appeal are valid considerations in building design, they are secondary to the primary function of sealing in preventing unwanted air movement and maintaining energy efficiency. Increasing building height has no direct relevance to sealing and air leaks, making it irrelevant to this discussion.