The roof of an old home (circa 1960s) in Al Rayyan, Qatar, March 19, 2010. The ceiling consisted of round timbers, roughly three inches in diameter. Mangrove slats ran perpendicular to the rods. A mangrur, matting woven with palm fronds, was rolled over the framework. Finally, a mixture of straw and mud, using well water, was poured on top.
