How To Attach A Shed Roof To An Existing Wall

On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below.

How to attach a shed roof to an existing wall.

Attaching below the ridge. Read on to find out how to attach a patio roof to an existing house. The top plate on each side will overlap and attach to one adjoining wall corner. In the case of a lean to roof over an addition the existing rafters will have to be cut away to accommodate the addition and the shed roof will require support where.

This will occur at all four corners adding an additional attachment point for each corner. If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate. Reinstall the removed shingles or use new shingles to cover the area of the old roof which was exposed. Most common ways to attach a patio roof to an existing house.

To get a cleaner and nicer look you can add some extra flashing wall covering. Repeat for the remaining two walls. Add a second top plate to more securely attach the walls and to add strength and support for the roof. Add decking atop the roof and nail on metal flashing where the shed roof joins the existing roof.

After that you can seal the brackets from the front.