COASTROAD Hearth & Patio Since no one else has chimed in, I'm going to venture that the hearth/bench that runs across the wall is a monolithic, poured in place, cantilevered concrete slab. We've done something similar on one of our projects (below).
The fireplace facing itself appears to be plaster run all the way to the gas fireplace opening. Drywall usually won't work in this situation, because heat from the fireplace will burn the paper right off the face of the drywall, which is not good. : )
flooring - This room is quite beautiful and particularly the windows and doors. I am building a similar space but I fear won't be quite as beautiful.... as your doorway is magnificent! I must ask you, what flooring have you used? I like that it is a lighter colour but still dark enough to set off the space. »
What is the manufacturer/model of the doors? - Congratulations, what a wonderful renovation! Also, what is the material used for the interior framing of the patio doors--is it the same as used for the beautiful built in shelving along the opposing wall? »