How To Build A Lean To Metal Roof

Space rafters either 16 o c.

How to build a lean to metal roof.

Next place the supporting posts into the notches. Roll between the garage wall and the shed roof. Determine where the lean to will be attached to the existing building. Use a 2 by 4 inch board for a short roof up to about 8 feet a 2 by 6 for a longer one.

Design lean to roof per your local building codes. I used aluminum flashing from a 50 ft. Use right size of rafters and headers. Place the starting panel onto one edge of the roof.

Measure the width of the outside wall and cut the board with a circular saw to the same length. I need to build a lean to onto the side of my 50 x 50 shop. Plan ahead and build the roof to the size of the metal panel. Cut out a notch on the top of your posts as shown in the image above.

If it is needed cut the metal roof panel to the length you need with tin snips hopefully you don t have too. Make a ledger board to fasten to the existing wall and support the upper end of the lean to roof. I want to use steel posts. The preferred spot would place the.

When attaching ledger board to an existing wall install proper flashing when required. Measure the height at which the. The side of the panel that has a slightly flat side is to place on the roof. I m bookmarking this for later reference.

Compute the depth of the shed by taking the square root of the difference. For shingles or 24 o c. Cut the 6 inch thick lumber into blocks that run the length of the lean to. Draw a right angled triangle on a piece of paper that shows the length of the roof and the planned height of the opening.

This is where the supporting post will rest.