Bullard Siding custom builds sunrooms to fit your space. No kits here. All Bullard Siding sunrooms are custom built on site to match the unique requirements of your home. The use of top quality windows in combination with high quality insulated wall panels and thermally broken extrusions allow for the construction of a sunroom with superior insulating qualities as well as exceptional fit and finish. We use custom sized windows in order to maximize the view and minimize fill panels. All Bullard Siding sunrooms also come with a true lifetime warranty.