Minimum Roof Pitch For Dormers

However you can only use this pitch with built up roofing or specialized.

Minimum roof pitch for dormers.

Roof dormers add light. This type of dormer needs a roof pitch shallower than that of the original. Minimum roof pitch the minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. A shed dormer on the other hand is usually had on homes with a roof pitch of at least 8 in 12 or steeper.

You should have at least an 8 12 pitch for it to look as if it belongs. These are the windows that seem to stick out from the face of a roof. This image shows a relatively shallow roof pitch of 15 degrees. You need to have a roof pitch that gives you at least the height of a window and then some.

The loft space would be much larger with a roof pitch of 45 degrees. Having a steeper pitched roof allows for more space in a shed loft. Dormers are wonderful spots for a reading nook kids play area dressing area and other uses where extra light is a bonus. That pitch is too shallow to hold the shape of the dormer.

Pitched roofs can also be used to incorporate roof lights angled in a specific direction or dormer windows.