Roof Framing Spacing

When placing rafters for a tin roof also frequently referred to as corrugated metal or steel it is common to set the distance between rafters based on the size of the roofing panels.

Roof framing spacing.

A framing square is traditionally used for laying out the roof and determining pitch. Learn the 1 rafter design that will guarantee your roof that is safe and strong for years to come. Depending on the roof design and the roof rafter spacing. Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet.

Rafter spacing depends on the roofing panel size. This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Rafter tie or collar tie spacing intervals connection specifications 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.

So the space between rafters can be greater without reducing the maximum span. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. The same concept holds true for roof trusses. This is our ultimate roof rafter guide for people designing and building an off grid cabin or tiny home.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Pitch is the amount of angle or slope the roof has.