Some of the reasons for its popularity is low cost, high insulating ability, lightweight, and high snow load ratings.
- Corrugated Panels – normally the least expensive of the two. It is a single layer sheet similar in design to the old tin roofs with “peaks and valleys.” It makes an excellent roofing or wall material when insulating ability and the lowest possible cost are the main priorities.
- Multi-wall Panels – are hollow and have flutes that run the length of the sheet. The air space in between the layers gives this type of sheet a much higher insulating ability than a single layer corrugated sheet. And the fluted design makes it much stronger and provides a higher degree of security.