How Does Building Science Basics - #2: The Exterior Envelope Work?

The exterior envelope is like the skin of a building, it keeps everything inside cozy and protected from the outside world.

Imagine you're wearing a big, warm coat on a cold day. That coat stops the wind and cold from getting to your body. The exterior envelope works in the same way, it’s made up of walls, roofs, windows, and doors that keep the building warm in winter and cool in summer.

The exterior envelope has layers, just like your coat has an outside layer and a soft inside layer. These layers help control temperature, stop drafts, and even keep out rain or snow. If there are cracks or holes in the envelope, like a rip in your coat, cold air can sneak in, making you shiver.

Sometimes, if the exterior envelope isn’t built well or gets damaged over time, it’s like having a leaky umbrella on a rainy day, water gets inside and everything gets messy. That’s why it's important to take care of the exterior envelope, so the building stays happy and comfortable all year round! The exterior envelope is like the skin of a building, it keeps everything inside cozy and protected from the outside world.

Imagine you're wearing a big, warm coat on a cold day. That coat stops the wind and cold from getting to your body. The exterior envelope works in the same way, it’s made up of walls, roofs, windows, and doors that keep the building warm in winter and cool in summer.