Exterior balconies are more than just features on buildings; they are places to host guests, read good books, and enjoy the views. For some, balconies become the focal points of living spaces. People think of the comfort of their living spaces but rarely think about how the building envelope (the exterior skin that acts as a barrier against water, water vapor, air and temperature) works until there is a leak or draft. That same building envelope that creates cozy living rooms and warm sunrooms and beautiful balcony spaces doesn't just provide comfort; it also provides critical protection to the entire structure, ensuring a safe living environment.

What is a building envelope?