Flat roofs - a brief history [INFOGRAPHIC] 22 Sep 2017 For more Flat Roof resources check out our Flat Roof hub! Add to Project Board Choose from existing project boards below: Or Create a new project board: The item has been added to the project board. Go to My Account to view your projects. Add to Project Board Choose from existing project boards below: Or Create a new project board: The item has been added to the project board. Go to My Account to view your projects. Construction Architecture