Porch Roof 2x6 Rafters

Patio roof maximum beam rafter spans.
Porch roof 2x6 rafters. Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. Attach the rafters attach 2x6 rafters to the house with joist hangers and or supported by the ledger board. It is always better to have a large rafter rather than be concerned with a sagging roof. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.
If necessary use a sliding bevel to determine angles needed where the rafters will meet the ledger board. Ok now you want to install rafters. 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. Building a porch roof requires basic carpentry and porch roof framing knowledge.
Span calculator for wood joists and rafters also available for the android os. This post may contain affiliate links. We show you how both a typical rafter style porch and truss roof area constructed. Rafters are placed on 24 centers and attached to the beams and settle joists are attached as needed image 1.
This table agrees that 10 12ft is the max span for typical grade lumber at typical spacings for a 5psf dead load. 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. In the example above you will need 6 squares to cover a porch roof that is 534 square feet. The calculator assuming spf construction grade lumber says 2x6 for the rafters at 7 feet and 2x10 for the 14 foot long joist.
For more information see our disclosures here. Porch roof rafter length rafter plate location. We show you the steps involved and calculations required for buildng a roof for your porch or constructing one over your deck or patio. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.