Proper Roof Framing

Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to.

Proper roof framing.

Gable a gable roof has a ridge at the center and slopes in two directions. The american plywood association says there s no reduction in strength for nails overdriven by 1 16in. Choose the design of the roofing trusses. It is the form most commonly used by the navy.

In high wind areas sheathing along the eaves rakes and ridges is nailed every 6 in. Common types of roofs and basic framing terms. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. Construction accidents occur in the thousands every year. Locate a centerline at the middle section. Add the length of the overhang beyond this mark and.

Draw a ridge line between the intersection points of the hip rafters. The framing style of the roof refers to the actual components of each. Choose a style of roof. It is simple in design economical to construct.

Whether stepping on a nail twisting when. Shed roof framing process explained step by step instructions safety first. Install baffles providing a minimum of 1 inch of clear space between framing and or under roof decking at eaves to ensure that ceiling or roof insulation does not block ventilation paths. Understand the different measurements.

So much information has been devoted to the subject of roof venting that it s easy to become confused and to lose focus. Now draw a 45 degree line from each corner toward the centerline that can help to establish location specifications for. Depending on the roof design and the roof rafter spacing. If you want to frame a roof you ve got two important choices to make in terms of design.

Designing the roof 1. Position the square at the end of the rafter board with the tongue on your left and facing away from you. A vented attic where insulation is placed on an air sealed attic floor is one of the most underappreciated building assemblies that we have in the history of building science. Building codes such as the icc s 2012 international building code section 2308 10 roof and ceiling framing typically specify that where rafter ties are used they are required at intervals ranging from 12 to 24 o c.

Roof sheathing is nailed every 6 in. Along the edges and every 12 in. Choose the roofing material. So i ll start by saying something that might sound controversial but really isn t.

For vaulted or cathedral roof construction provide a free ventilation path from eaves to ridge between all rafters.