How To Build Lean To Metal Roof

Determine where the lean to will be attached to the existing building.

How to build lean to metal roof. Vertical horizontal box eave and vertical roofs. How to attach a lean to to an existing metal building step 1. Measure the height at which the. Also snip the other side directly across to prevent it from flattening.

Make a ledger board to fasten to the existing wall and support the upper end of the lean to roof. This is where the supporting post will rest. Cut the 6 inch thick lumber into blocks that run the length of the lean to. Usually a lean to metal building is about 10 to 12 wide and under 41 long.

The preferred spot would place the. Constructing a freestanding lean to is a basic. When attaching ledger board to an existing wall install proper flashing when required. Measure the width of the outside wall and cut the board with a circular saw to the same length.

Use a 2 by 4 inch board for a short roof up to about 8 feet a 2 by 6 for a longer one. For shingles or 24 o c. A lean to metal building comes in three different roofing styles. Design lean to roof per your local building codes.

Either way the concept is the same. To install the drip edge use tin snips to cut a triangle from the side that sits on the plywood where the metal will wrap around the corner. Use right size of rafters and headers. To attach a wooden nailer to a metal sided building use a self drilling screw with sufficient threads to hold the nailer tightly.

The point of the triangle is where the metal will wrap around. If possible nail through the siding into the building s framing members. Next place the supporting posts into the notches. Cut out a notch on the top of your posts as shown in the image above.

Fasten the nailer to the side of your existing building where you will attach the upper end of your rafters. Using the 2 nails nail the drip edge to the plywood.