Pitching A Flat Roof

Step 1 calculate the roof span.

Pitching a flat roof.

Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Calculate how much the roof span is going to be by measuring from one top plate to the other top plate. This means that the rise of the slope goes up or down 8 inches for every 12 inches. Flat roofs also don t last as long.

Tommy explains how to seal a flat roof. Step 5 replace roofing. There are different kinds of roofs and all these have particular specifications for their installation. The best roof pitch depends on the style of roof you are going for.

If you a looking for a sleek modern style a not entirely flat roof with a pitch of 1 40 should be used. Determine the roof span and pitch. 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. 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.

Step 4 re sheath roof. Tear off the old materials and apply roof sheathing. There is no question that a flat roof is cheaper to install. Step 2 calculate material prices.

A pitched roof is more expensive. Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Install the new material. Then he and kevin install a rubber protected roof over an addition.

Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. 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. For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. It is a significant renovation if you are converting from flat to pitched.

However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Adding pitch to a flat roof. Roof pitch in layman s language simply refers to the steepness of the roof. These roofs have a pitch less than 4 12.

Step 3 prepare the materials. How to make a flat roof have a pitch general steps step 1.