Contemporary architecture has been gaining a lot of traction around the globe, with homeowners looking for newer, more innovative and energy efficient homes designs. this has led to an uptick in modern roof design ideas.. according to the cheltenham’s leading roofing company, roofs can be made of many materials beyond the traditional shingles that so many people associate with this area.. While traditional materials like asphalt shingles can be used on curved roofs, curved roofs are considered modern designs. curved roofs are beneficial in that they promote drainage of rainwater and snow. besides the unique design, a curved roof keeps your home cool. other materials that can be used for curved roofs include metal roofing sheets..