A ledger is a horizontal board that is attached to the top of the the wall.
How to attach roof trusses to a block wall.
The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure.
Joists sit horizontally on edge on cinder block crawl space foundations or basement walls to support the floors of a home.
You can use engineered i beam trusses as joists or choose to use 2 by 12.
Attaching a wood roof to a cinder block building is difficult but possible.
Failure to create an attachment point will result in roof failure especially in high winds.
Although a roof truss may be heavier and more difficult to maneuver onto the top of the building than conventional framing lumber once there it can easily be slid into position and secured.
One possible way is to gain access through the eave area which may be exposed or through the soffit which is the flat surface at the eaves that forms a sort of ceiling where the roof overhangs the.
Failure to create an attachment point will result in roof failure especially in high winds.
Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.
However the do it yourselfer can attach a wooden roof to cinder block with little or no training in one to two days depending on the size and scope of the project.
Retrofitting roof to wall connections in masonry houses.
There are several ways to gain access to the roof to wall connections in masonry houses.