12 pitch ?
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Depends on what type of dormer you are talking about. If the dormer has a pitched roof, such as a "gable," it's framed with the same roof pitch as the original roof, so it blends in.
A "shed," dormer on the other hand is usually had on homes with a roof pitch of at least 8 in 12 or steeper. This type of dormer needs a roof pitch shallower than that of the original. A general rule of thumb is to keep a shed dormer at least 4 in 12. (A shallower or steeper pitch will make the dormer look out of place).
If you mean "Combles" (the part under the roof), it's masculine
Full length of the roof line is called a Dutch Dormer.
A dormer is a small piece of roof that projects from or is not in plane with the main roof plane. It has a junction with the main roof and this junction is where the flashing is required. Dormers can vary in shape, so the exact form of flashing required will vary. The type of flashing also depends on the roofing material, and whether the same material is on the main roof and the dormer roof. If the main roof plane and the dormer are of the same material, the flashing can usually be the same as used on a similar junction of the main roof. Important parts of a basic flashing are: * it laps from under the upper or higher roof cladding so that water will run down onto it from the higher cladding, and it laps over the lower roof cladding so that water running down it will run onto the lower cladding, rather than underneath the lower cladding. Flashings that run parallel to the fall of the roof are a little different but follow the same principle: look at the path the water will follow. * It is lapped a sufficient distance under and over the cladding to prevent water seeping back. This distance will depend on the roofing material, the material's profile, the strength of wind in the area and the rainfall of the area. * It may also need a return or kickback on the flashing to prevent capillary action or wind driven moisture. Flashing materials must be compatible with the roofing material. Water running over some materials will collect ions that may make materials that this water then runs onto be stained or corrode quickly.
A single pitch roof is basically a flat roof with a pitch (or angle), usually to allow water to run off. This differs from a double pitch roof /\ that is what you commonly see.
Roof pitch is measured in "rise over run". In other words, how many inches does the roof rise vertically in 12" of horizontal run. If a roof rises 4" in 12" of run, you have a 4/12 roof pitch.
Roof pitch is measured in "rise over run". In other words, how many inches does the roof rise vertically in 12" of horizontal run. If a roof rises 4" in 12" of run, you have a 4/12 roof pitch.
The pitch of the roof.
Roof pitch is rise and run. So if you have a 4/12 pitch, for every foot of run the roof rises 4 inches.
The answer will depend on the height of the pyramid - or, equivalently, the pitch of the roof.
A Flemish dormer is a type of window.
Natalie Dormer is an atheist.
You would not have to add a ridge board, particularly if you are planning to build the addition roof directly over the existing roof.