Roof Rafter Size Long Island

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

Roof rafter size long island.

This is because a steep sloped roof requires a taller chimney and more lumber for framing. If this calculator from the american wood council is to be believed and if my assumptions about your materials and load are correct the max span is about 10ft for a pine 2x6. Proudly serving nesconset holbrook islandia and more. According to the american wood council the maximum span for rafters is about 30 feet and that s with a relatively low load of 20lbs per square foot.

Perfect roof rafters focus your efforts on the pattern rafter and the rest of the roof falls into place easily. If your local building authority has a rafter spacing code you may not space rafters wider than required by code. Power washing and house washing in ronkonkoma new york by island soft wash. Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches.

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. Also available for the android os. Call today 631 681 1941. This table agrees that 10 12ft is the max span for typical grade lumber at typical spacings for a 5psf dead load.

Span calculator for wood joists and rafters also available for the android os. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. As the load goes up for snow in northern climates or for heavy roofing material like tile the span length decreases. Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles.

A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof. Another option are 2 x 8 rafters spaced 24 inches o c. In making your choice consider how you will insulate your insulate your roof.