As Mr. Mongeau mentioned, the upper layer is a triple-glass layer, which prevents the elements from getting in. It also soundproofs the chamber. Underneath that, there is what we call a laylight layer essentially forming a pillow. The roof is like a pillow. That's quite beneficial, because we will actually capture heat from the pillow. Even during the winter months it will be capturing heat. It will be recirculated into the occupied space. All the mechanical and electrical systems that are extracting that heat will be ducted down into the actual chamber. That roof will produce approximately 10% of the energy requirements of that building on a sunny day even in the wintertime.
The laylight layer also acts to improve the sound characteristics of the chamber. When you have a large volume of space, managing sound is something you need to consider. The laylight essentially reduces the volume and allows us to control intelligibility.