Gable Roof Size

Rafter plumb cut depth.

Gable roof size. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Another option are 2 x 8 rafters spaced 24 inches o c. Total rafter lumber length. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors.

Use the saltbox roof to calculate a two sided roof with different slopes spans and or overhangs for each side of the roof. Gable roof a gable roof has two opposite sides with equal slopes and equal spans that meet in the center of the roof at the ridge. The table states that 2 x 6 rafters spaced 16 inches on center o c can span a maximum distance of 13 feet 5 inches. 10 add up the areas of each section to get your total square footage.

Outside of the u s a degree angle is typically used. This sizing guide for roof rafters will help determine what you need for your small project. Length from ridge to eave. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

In making your choice consider how you will insulate your insulate your roof. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. Total roof width with rake overhangs. There are several variables to consider when determining the proper rafter size.

Measure out horizontally 12 one foot from the gable end sloping trim to a point along horizontal siding or use your level to make a mark that is level horizontally measured out 12 from the sloped gable trim or roof edge. Measure and mark the square footage of each triangular section carefully as these tend to differ in size. Check that your footage measurements are within this range so you can start off on the right foot.