Shed Dormer Roof Pitch

This image shows a transom dormer.

Shed dormer roof pitch.

This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12. Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square. A framing square is traditionally used for laying out the roof and determining pitch.

Of course a shed dormer s roof slope needs to be shallower than the primary roof slope but it s best to keep the dormer roof slope at least 4 in 12 or steeper. A shed dormer on the other hand is usually had on homes with a roof pitch of at least 8 in 12 or steeper. If you are only trying to keep a wood pile dry or storing a few outdoor tools and light machinery out of the weather then you might consider a simple single pitch roof since most everything inside will be stored at ground level and pulled out from the outside of the shed. Whereas a hip roof and other popular roof types have at least two sides the shed roof has a single slope that can vary in steepness depending on the design.

Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run. Roof pitch refers to the slope which the rafter creates. In general a 11 2 story house with a roof pitch of 8 in 12 or steeper is suitable for a shed dormer. Recessed dormer set into the roof a recessed dormer i like to call it a sugar scoop maximizes the height of the dormer face while minimizing the projection of the dormer roof above the main roof plane.

Shed roof dormer cost. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. 23 300 for dormer 16 wide x 14 deep. Average cost and size.

Flush dormers tend to look boxy and flatter roof pitches make them appear even boxier. Much depends on what your intended use for the shed actually is. Dormer windows such as the traditional gabled dormer or the more modern transom dormer allow in light add interest to a roof line and can also give some additional space in a shed loft. As stated in the.

You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. Since these roofs slope there is less siding required for the dormer than on a shed roof dormer but more work and cutting to accommodate the slope change. Think of a shed roof as a flat roof at a steeper slope you can also think of it as one half of a traditional gable roof. The dormer s roof slope should be at least 4 in 12.

Roof pitch is another important variable. The shed roof pitch has two slopes and the window above eaves level allows additional light into the shed.