Roof Pitch For Shed Dormer

There is no harm in having the roof pitch of the dormer steeper than that of the main roof.

Roof pitch for shed dormer.

Shed roof pitch calculator. An important factor to throw into a discussion about roof pitches is local planning rules and regulations. Upgrading with the dormer package adds an attractive distinguished facade. An a frame cuts off a lot of the height so adding the shed roof area gives a lot more usable space.

In general a 11 2 story house with a roof pitch of 8 in 12 or steeper is suitable for a shed dormer. The dormer garden shed is simply an enhanced a frame shed with a steeper pitch roof. It includes the same standard features as the a frame. However if they are kept the same it will usually be possible to have tiled as opposed to lead valleys.

Dormer windows and roof pitch. It is also wise to allow the roof of the dormer to follow the style of the main roof i e. The higher roof line on the shed roof area adds a lot of usable space. Much depends on what your intended use for the shed actually is.

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. The a frame roof looks like a 15 12. Hips with hips and. 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.

Knowing how to calculate roof pitch rise run and ridge board height is essential to any shed construction. This type of dormer needs a roof pitch shallower than that of the original. This image shows a transom dormer. Simply plug in the values of your roof and it will show you slope percentage degree and even length.

That gives 51 34 angle. A shed dormer on the other hand is usually had on homes with a roof pitch of at least 8 in 12 or steeper. A roof pitch calculator can make things much easier. 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.

So a 4 12 roof pitch rises 4 inches for every 12 inches. The shed roof pitch has two slopes and the window above eaves level allows additional light into the shed. 75 120 per square foot or 16 800 to 26 880. 23 300 for dormer 16 wide x 14 deep.

The dormer should look like a section of the main roof was hinged up just enough to provide headroom and space for windows while minimizing the total volume of the dormer above the main roof. To illustrate general design concepts for shed dormers i ve drawn what i call a fully supported dormer where the main roof continues around all four sides of the dormer. Dormer package included dormer roof dormer window and fiberglass raised panel door with arched glass.