Pitching A Flat Roof

Then he and kevin install a rubber protected roof over an addition.

Pitching a flat roof.

Tear off the old materials and apply roof sheathing. 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. The best roof pitch depends on the style of roof you are going for. How to make a flat roof have a pitch general steps step 1.

Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Install the new material. It is a significant renovation if you are converting from flat to pitched. Adding pitch to a flat roof.

For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. Thisoldhouse asktoh subscribe to this old house. Step 4 re sheath roof. A pitched roof is more expensive.

Step 1 calculate the roof span. Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Calculate how much the roof span is going to be by measuring from one top plate to the other top plate. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff.

Determine the roof span and pitch. There are different kinds of roofs and all these have particular specifications for their installation. Flat roofs also don t last as long. These roofs have a pitch less than 4 12.

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. If you a looking for a sleek modern style a not entirely flat roof with a pitch of 1 40 should be used. 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. There is no question that a flat roof is cheaper to install.

Step 5 replace roofing. However flat roofs require much more aggressive and consistent maintenance than a pitched roof. This means that the rise of the slope goes up or down 8 inches for every 12 inches. Another possibility is to cut a fall into the roof insulation something several businesses now offer it s often referred to as tapered insulation.

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