Pitching A Flat Roof

Adding pitch to a flat roof.

Pitching a flat roof.

Step 3 prepare the materials. Determine the roof span and pitch. The best roof pitch depends on the style of roof you are going for. 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. Step 2 calculate material prices. Thisoldhouse asktoh subscribe to this old house. Step 5 replace roofing.

Calculate how much the roof span is going to be by measuring from one top plate to the other top plate. 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. These roofs have a pitch less than 4 12. Generally such roofs have a pitch ranging from 1 2 12 to 2 12.

Step 4 re sheath roof. How to make a flat roof have a pitch general steps step 1. There is no question that a flat roof is cheaper to install. If you a looking for a sleek modern style a not entirely flat roof with a pitch of 1 40 should be used.

For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. Low pitched roofs are generally difficult to maintain and you need special materials to prevent leaks. Tear off the old materials and apply roof sheathing. It is a significant renovation if you are converting from flat to pitched.

An example for a steep sloped roof is 8 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. Install the new material. A pitched roof is more expensive.

Tommy explains how to seal a flat roof. 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. However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Flat roofs also don t last as long.

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 1 calculate the roof span.