Pitching A Flat Roof

An example for a steep sloped roof is 8 12.

Pitching a flat roof.

A pitched roof is more expensive. How to make a flat roof have a pitch general steps step 1. Determine the roof span and pitch. Roof pitch in layman s language simply refers to the steepness of the roof.

Step 3 prepare the materials. For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. Another possibility is to cut a fall into the roof insulation something several businesses now offer it s often referred to as tapered insulation. Tommy explains how to seal a flat roof.

The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope. Adding pitch to a flat roof. Step 2 calculate material prices. Flat roof slope the slope of a roof or pitch is determined by how many inches the roof rises over 1 foot or 12 inches.

A far more common method is to use firring strips which are battens cut at an angle and placed on top of the roof joists. It is a significant renovation if you are converting from flat to pitched. Calculate how much the roof span is going to be by measuring from one top plate to the other top plate. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Step 4 re sheath roof. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. This means that the rise of the slope goes up or down 8 inches for every 12 inches. The best roof pitch depends on the style of roof you are going for.

However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Then he and kevin install a rubber protected roof over an addition. There is no question that a flat roof is cheaper to install. Step 5 replace roofing.

Thisoldhouse asktoh subscribe to this old house. Step 1 calculate the roof span. There are different kinds of roofs and all these have particular specifications for their installation. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks.

If you a looking for a sleek modern style a not entirely flat roof with a pitch of 1 40 should be used. Flat roofs also don t last as long.