1. Roof styles
Origins- Bischoff 2012

2. Parts of a roof (gable roof shown)

3. Rafter layout (gable roof shown)
Common rafters are used in most roof applications
Each roof style is going to have different rafter layouts

4. Rafter layout
Cutting individual rafters requires you know a few different dimensions
Rise and run (pitch)

5. Gable Roof Most popular style
Two roof surfaces that are the same size and pitch
Forms a triangle at the end of the building
Front Gable
Side gable
Cross gable

6. Gable Roof

7. Hip Roof Another very common style No vertical sides on roof sections
Good for homes in high winds or hurricane areas
Less internal attic space
Hip roof
Pyramid hip roof
Cross hipped roof

8. Hip Roof

9. Mansard Roof
Popularized by French architect Francois Mansart in 1600’s
Roof has two different slopes on each side
Lots of extra attic space
Popular in the USA in the 1800’s Victorian style houses

10. Gambrel Roof (Barn Roof)
Similar to Mansard with two angles on each side
Symmetrical on front and back sides

11. Saltbox Roof Similar to a Gable roof, but not symmetrical
Originated as a way to add space but save on materials

12. Flat Roof
Not actually flat, but a very low slope (sometimes only ¼” on 12” pitch) to drain water away
More economical to build- uses less material
Not recommended for areas that receive lots of rain or snow

13. Shed Roof
Usually a single roof section that slopes the entire length of the building
Sometimes called a “lean-to”
Often used as a home addition or for porches

14. Dutch Gable Roof A mixture between a hip roof and a gable roof
Adds architectural interest
Can also add attic space

15. Half Hip Roof
Starts out as a gable roof, but the top of the gable is clipped and made into a hip
Sometimes called “Clipped Gable”, “Jerkin Head” or “Dutch Hip” roof

16. Turret Roof
Necessitated from a round or octagonal building structure

17. Geodesic Dome A sphere or half sphere formed out of triangles
Popularized after R. Buckminster Fuller developed the mathematics to understand the structure in 1954