Gambrel Roof Slopes

Its double or sometimes triple slopes on each side of a peak provide more space inside the roof which is attractive to homeowners too.

Gambrel roof slopes.

A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. Both mansard and gambrel roofs fall under the general classification of curb roofs a pitched roof that slopes away from the ridge in two successive planes. A gambrel or a barn roof is much like mansard in a sense that it has two different slopes. In a gambrel roof usually the lower slope is steep whereas the upper slope is placed at a relatively shallow angle.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. This roof style offers several advantages including space drainage ease of building and affordability making it a roof style worth considering for your project. The gambrel roof style commonly seen in barns in north america is a close cousin of the mansard.

The difference between the two is that the gambrel only has two sides while the mansard has four. Gambrel roofs are symmetrical with two slopes on each side of the roof. A gambrel roof features two distinct slopes one steeper than the other to create a barn like look on homes garages and sheds. It is a symmetrical two sided roof.

However the mansard is a curb hip roof with slopes on all sides of the building and. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. A gambrel style is often called a barn roof. A gable roof has only two rafter or truss chord angles a top cut at the peak and a bottom cut at the walls.

The usual architectural term in eighteenth century england and north america was dutch roof the upper slope is positioned at a shallow angle while the lower slope is steep. To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a. A gambrel roof can be defined as the type of roof that essentially consists of two slopes on each side i e. A gambrel roof is a popular roof style on many contemporary barns and sheds.