Framing A Room On A Tar Roof Detail

The importance of building it right photo by russell kaye.

Framing a room on a tar roof detail.

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. Unlike a slanted roof a flat one is directly exposed to all of the elements. But the horizontal lines of this 8 by 13 foot flat roof section at the cambridge tv project house make it vulnerable to heavy snow and pooling rainwater which is why it must be built to last. Hot tar and gravel.

Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof. Roofing tar is a good choice for a flat roof as this kind of material is highly resistant to the ultraviolet rays from the sun. While tar and gravel roofing or built up roofing systems have many positive aspects if you live in an area or the roof is in a location where it will receive strong sun exposure hot tar roofs will likely damage the roof s membrane if it is left uncovered or unevenly covered by the gravel. Many home builders use roof tar when constructing a flat roofed house.

Sheathing goes down quickly on a roof that isn t sloped and thus provides some footing. This kind of material is incredibly resistant to the ultraviolet rays from the sun. This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

Pros and cons of roofing tar. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it measure down y height from the long point of the rafter cut and make a mark.