User blog comment:TornadoPhotographer/Facades/@comment-70.51.169.8-20130916012148

Facades are used to cover up BuildCraft Pipe-Connections to make areas look better. In addition, they can be used to conceal wiring. For example, putting a Pipe under a Chest still makes the pipe visible at an angle. Placing a Facade covers up the pipe, and makes it cool.

-malsf21 (Account ain't workin')