How To Build A Lean To Roof On Existing Roof

For shingles or 24 o c.
How to build a lean to roof on existing roof. Design lean to roof per your local building codes. Add roof existing deck add roof existing deck 12. From this existing post measure 3 feet distance in the same line dig a hole and drive the second post in. Measure 8 feet from the existing structure towards the outer direction and dig a deep hole to drive the post in.
The preferred spot would place the lean to under the overhanging roof of the existing building. Place the starting panel onto one edge of the roof. Fit the trims to the sides of the lean to roof and lock them into place with 6d nails. Attaching patio cover existing roof attaching patio cover existing roof 14.
Add porch roof existing build metal over deck add porch roof existing build metal over deck 11. Front wall trims lean to addition. Attaching below the ridge. Place the rib inside closure inside the groove both overhangs will have this.
Typically a lean to roof will lay at a different pitch than your existing roof. 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. Determine where the lean to will be attached to the existing building.
Use right size of rafters and headers. Space rafters either 16 o c. Attach patio roof existing house attach patio roof existing house 13. Attach patio roof.
Drive the post in and fill the hole with concrete to set it in place. The other side is for overlapping the panel. Use 1 8 lumber for the side roof. When attaching ledger board to an existing wall install proper flashing when required.
The side of the panel that has a slightly flat side is to place on the roof. Existing roof existing roof 10. 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.