Pitching A Flat Roof

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.

Pitching a flat roof.

Determine the roof span and pitch. Tear off the old materials and apply roof sheathing. However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Calculate how much the roof span is going to be by measuring from one top plate to the other top plate.

Roof pitch in layman s language simply refers to the steepness of the roof. This means that the rise of the slope goes up or down 8 inches for every 12 inches. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. If you a looking for a sleek modern style a not entirely flat roof with a pitch of 1 40 should be used.

Thisoldhouse asktoh subscribe to this old house. These roofs have a pitch less than 4 12. Then he and kevin install a rubber protected roof over an addition. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks.

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. Install the new material. The best roof pitch depends on the style of roof you are going for. Step 5 replace roofing.

Step 2 calculate material prices. Step 4 re sheath roof. There are different kinds of roofs and all these have particular specifications for their installation. Step 1 calculate the roof span.

Generally such roofs have a pitch ranging from 1 2 12 to 2 12. How to make a flat roof have a pitch general steps step 1. Another possibility is to cut a fall into the roof insulation something several businesses now offer it s often referred to as tapered insulation. A pitched roof is more expensive.

Flat roofs also don t last as long. There is no question that a flat roof is cheaper to install. For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. An example for a steep sloped roof is 8 12.

Step 3 prepare the materials. Tommy explains how to seal a flat roof.