How To Build A Lean To Roof On Existing Roof

Place the starting panel onto one edge of the roof.

How to build a lean to roof on existing roof.

Typically a lean to roof will lay at a different pitch than your existing roof. Attach patio roof existing house attach patio roof existing house 13. For shingles or 24 o c. 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.

Any water runoff will flow off of the main roof and hit the lean to at an angle to prevent pooling and flooding in the lean to. Fit the trims to the sides of the lean to roof and lock them into place with 6d nails. Measure 8 feet from the existing structure towards the outer direction and dig a deep hole to drive the post in. Drive the post in and fill the hole with concrete to set it in place.

Place the rib inside closure inside the groove both overhangs will have this. Use 1 8 lumber for the side roof. When attaching ledger board to an existing wall install proper flashing when required. Cut back the roofing on the existing building if needed so that the new roof can fit correctly beneath it.

Space rafters either 16 o c. Attaching patio cover existing roof attaching patio cover existing roof 14. Determine where the lean to will be attached to the existing building. Front wall trims lean to addition.

Mark the area where you want the structure. The preferred spot would place the lean to under the overhanging roof of the existing building. Use right size of rafters and headers. Existing roof existing roof 10.

The lean to s roofing will need to fit fairly snugly underneath the existing roof to prevent rain from blowing into your addition. From this existing post measure 3 feet distance in the same line dig a hole and drive the second post in. Make angle cuts to the trims with a miter saw. Design lean to roof per your local building codes.

Add roof existing deck add roof existing deck 12. The other side is for overlapping the panel. The side of the panel that has a slightly flat side is to place on the roof.