Old Flat Roof Construction

Bur or built up roofs have been in use for more than 100 years in the united states and are often referred to as tar and gravel roofs.

Old flat roof construction.

Many pantiles s curved tiles as well as flat roofing tiles were used in jamestown virginia. Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes. Gravel is an excellent fire. This was a flat roof made of layers of felt and tar with a slight slope to a drain.

Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. Then in the mid 1800s tar roofs built up roofing were invented. In some cities such as new york and boston clay was popularly used as a precaution against such fires as those that engulfed london in 1666 and scorched boston in 1679.

May 9 2017 explore bernice ohene s board flat roof construction on pinterest. Workers would heat the asphalt tar or coal pitch to a liquid in a large kettle then mop it on the roof. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.

A flat roof is a roof which is almost level in contrast to the many types of sloped roofs the slope of a roof is properly known as its pitch and flat roofs have up to approximately 10. For additional stability you can also use steel joists that are built into one or both of the walls. See more ideas about flat roof roof roof construction. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape.

Ask any architect and they ll tell you that hardly any other type of architecture is as timeless and modern as that of flat roof houses. Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone. On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases. Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof flat roofs or low slope roofs are also commonly found on commercial.

It should come as no wonder then that these are experiencing a serious comeback right now. This will give additional stability to the roof structure. Applied by mop early tar and asphalt roofs.