Framing A Bonnet Roof

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.

Framing a bonnet roof.

The run or half the building span is the base of the triangle. When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm. It s like a reverse mansard. Nail 2 boards onto your walls as top plates.

The upper portion of the roof is heavily pitched and the lower slope is gently pitched. Roof framing is one of the most challenging task. This will give the framing square the angle you need to make the ridge cut. The lower slope hangs over the side of the house.

And the line length measurement from the roof peak to the building wall is the hypotenuse. 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. Figure 2 2 roof framing terms. Line length is the hyptenuse of the triangle whose.

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. Bonnet roofs also known as kicked eaves are double sloped with the lower slope set at less of an angle than the upper slope. Look through bonnet roof photos in different colors and styles and when you find some bonnet roof that inspires you save it. Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs.

The rise or height of the roof at its peak is the altitude of the triangle. This overhang is an excellent cover for an open porch. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. 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.

Bonnet roofs are not commonly used roofs in modern houses. As pictured above it is likely to extend much further than a mansard besides having the lower pitched slope on the bottom. This gallery includes terrific roof design illustrations so you can easily see the differences between types of roofs. Nail the first boards on top of your wall where you plan to build your roof.