A building’s envelope is described as any component of a building that touches the outside air and repels the elements such as the roof, walls, doors and windows. There are also some not-so-obvious parts of a building’s envelope that often get overlooked that include the lighting, handrails, signs, steps, pavement, concrete slabs, mechanical equipment and decorative features.
It’s important to take into consideration a building’s entire envelope, including the not-so-obvious parts, when it comes to waterproofing a building’s complete exterior.