Start with the row closest to existing shed.
How to build a lean to shed roof.
Dig out the first hole set in the block and check the elevation of the floor using a 2 6.
Connect the ends.
Fasten the ledger board to the studs in the existing wall with long screws and a screw gun you can remove the.
Construct the roof supports 1 fasten the nailer to the side of your existing building where you will attach the upper end of your rafters.
Make sure the block is deep enough to give the desired finished floor height.
To attach a wooden nailer to a metal sided building use a self drilling screw with sufficient threads to hold the nailer tightly.
How to build a lean to shed roof step 1.