Ledger Roof Framing

A common element in adding porch roofs is fastening one end to the house either to a wall or to a roof.

Ledger roof framing.

If you are tying the roof directly to a house wall you can install a ledger board with flashing and install rafter ties to attach the rafters at the appropriate angles or use engineered trusses. The lower end is done the same way a skillion or shed roof is. The deck ledger to the house is an unusual connection in home building. American forest paper association wood construction data 1.

There are several variables to consider when determining the proper rafter size. The second is to join a roof to an existing vertical wall in the case of building a porch or adding on a room. A lean to roof just means it s attached to an existing structure. This sizing guide for roof rafters will help determine what you need for your small project.

Most house framing relies on building elements floors walls roofs being stacked one atop another. Details for conventional wood frame construction. Letters reader questions bolting ledgers to studs. Lean to shed roof framing.

A ledger should be affixed to strong parts of the house s framing such as second floor joists or wall studs. The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall. Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves. At the end of glenn mathewson s handling lateral loads january february 2012 he proposes connecting a 2x12 ledger one step down from a door threshold something many of us in snow country regularly do.

The complexity of the job will vary with the size of roof from a simple entryway covering to one over a large screened in area. Detail of ledger framing system as drawn in building specimen platform framing balloon and ledger fastening a patio roof to the house hometips deck framing whats people lookup in this blog. A ledger relies on the fasteners and strength of the wood ledger board and rim board of the house to carry the deck live and dead loads. Letters reader questions bolting ledgers to studs.

In this case the ledger should be mounted at the height that the ridge beam would. Flat roofs are more susceptible to leaking than pitched roofs. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. The first approach to achieving a strong durable struc.