Framing A Bonnet Roof

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.

Framing a bonnet roof.

Figure 2 2 roof framing terms. Nail the first boards on top of your wall where you plan to build your roof. The rise or height of the roof at its peak is the altitude of the triangle. As pictured above it is likely to extend much further than a mansard besides having the lower pitched slope on the bottom.

Bonnet roofs are not commonly used roofs in modern houses. Bonnet roofs also known as kicked eaves are double sloped with the lower slope set at less of an angle than the upper slope. And the line length measurement from the roof peak to the building wall is the hypotenuse. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

This gallery includes terrific roof design illustrations so you can easily see the differences between types of roofs. So if the pitch of your roof is 7 12 place one stair gauge on the vertical part of the framing square the tongue at the 7 inches 18 cm mark and place one stair gauge on the horizontal part of the framing square the body at the 12 inches 30 cm mark. This will give the framing square the angle you need to make the ridge cut. Nail 2 boards onto your walls as top plates.

The lower slope hangs over the side of the house. Line length is the hyptenuse of the triangle whose. Roof framing is one of the most challenging task. It is a complex framing style that can be or usually is a variation of the hip roof but a gable home may also make use of bonnet frame.

This overhang is an excellent cover for an open porch. Look through bonnet roof photos in different colors and styles and when you find some bonnet roof that inspires you save it. Discover the 36 different types of roofs for a house. Browse 46 bonnet roof on houzz whether you want inspiration for planning bonnet roof or are building designer bonnet roof from scratch houzz has 46 pictures from the best designers decorators and architects in the country including shoshi designs and designward inc.

The run or half the building span is the base of the triangle. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. It s like a reverse mansard. The upper portion of the roof is heavily pitched and the lower slope is gently pitched.