Parts Of A Flat Roof Structure

Pitch slope the number of inches of vertical rise in a roof per 12 inches of horizontal distance.

Parts of a flat roof structure.

There are several methods and materials for the design of the exterior surface of a warm or cold flat roof. Rafters these are wooden beams that run from the top of the roof to the bottom. Fascia this is the trim used to cover the eaves. There is nothing technically challenging about building flat roofs which incidentally are never flat but are always constructed to a fall in order to stop rainwater pooling.

Flashing or step flashing is a flat sheet of metal or plastic that is nailed over the cracks between the chimney and the main structure of the house. Wikimedia commons has media related to roofs by form. Joist in a flat roof a horizontal structural member over which sheathing is attached. It is the lower part of the roof that extends beyond the side of the house.

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. Roof shapes differ greatly from region to region. Rake is an inclined edge of a roof on top of a wall. Hot tar and gravel also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel.

Rake the slanting edge of a gable roof at the end wall of the house. Truss the truss is a framework comprised of wooden beams that helps to support the roof. An external installation on the roof that uses the vent pipe system to prevent water seeping in and create damage. From there the flat roof system you choose will determine the materials you apply.

Jump to navigation jump to search. From wikipedia the free encyclopedia. Rafter a structural member usually slanted to which sheathing is attached. Roof covering typically of flat and rectangular shapes and made of various materials such as slate wood flagstone plastic metal and composite materials.

The structural components of roof decking in case of pitched roof is generally a truss in case of curved roof it is a shell or dome and in case of flat roof it is a flat slab. The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering. But it wasn t until the 1950s that cheap and reliable materials for covering these structures became widely available and this started a boom in flat roofed extensions. Gutters are vents that carry away the trickled rainwater.