How To Build A Lean To Roof On Existing Roof

Attaching patio cover existing roof attaching patio cover existing roof 14.

How to build a lean to roof on existing roof.

Add porch roof existing build metal over deck add porch roof existing build metal over deck 11. Space rafters either 16 o c. Place the rib inside closure inside the groove both overhangs will have this. The side of the panel that has a slightly flat side is to place on the roof.

Place the starting panel onto one edge of the roof. Determine where the lean to will be attached to the existing building. Existing roof existing roof 10. Design lean to roof per your local building codes.

Front wall trims lean to addition. Cut back the roofing on the existing building if needed so that the new roof can fit correctly beneath it. Drive the post in and fill the hole with concrete to set it in place. When attaching ledger board to an existing wall install proper flashing when required.

The other side is for overlapping the panel. The preferred spot would place the lean to under the overhanging roof of the existing building. Attach patio roof. Fit the trims to the sides of the lean to roof and lock them into place with 6d nails.

Use right size of rafters and headers. 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. Make angle cuts to the trims with a miter saw. 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. 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. Measure 8 feet from the existing structure towards the outer direction and dig a deep hole to drive the post in.

Attach patio roof existing house attach patio roof existing house 13. Add roof existing deck add roof existing deck 12. Mark the area where you want the structure.