Lean-to Roof Construction Plans & Details

Ready to build lean-to overhang?   See some of our samples we have done and check out few FREE PDF Lean-to Plans below.

Leanto Addition

Adding a lean-to roof to an existing building is a simple do-it-yourself project.  You don't need to be an experienced builder, but having some common sense wouldn't hurt...

Leanto additions are very popular since they are easy to build and more cost effective compared to storage sheds or any other buildings.

On this page you'll find drawings and free PDF plans to build 8′, 10′, 12' and even 16' wide lean-to overhangs.

When building lean-to addition, there are few things you need to keep in mind.  You must consider the following:

  • Design lean-to roof per your local building codes.
  • Use right size of rafters and headers.
  • Space rafters either 16" o.c. (for shingles) or 24" o.c. (for metal roofing).
  • When attaching ledger board to an existing wall, install proper flashing when required.
  • Place pressure treated posts in ground below frost line or on top of concrete pillars.
  • For heavier snow loads, you can upgrade to #1 SYP rafters or space @ 12" o.c.


Free Lean-to Roof PDF Plans

Please follow links provided below to open free detailed PDF plans for 8' wide, 10' wide, 12' wide and 16' wide lean-to overhangs.  Most plans include list of materials needed to build a lean-to addition.  Please use your judgment and common sense and go over the list to make sure everything looks good. We did our best.

8'x24' Lean-to Roof Plan

10'x24' Lean-to Roof Plan

12'x24' Lean-to Roof Plan

16'x36' Lean-to Roof Plan (no materials list included)

Multiple Lean-to Roof Plans (on 17"x11" size paper)

By downloading any of the free plans listed here, you agree not to hold The BarnToolBox.com, it's owner and/or plan designer responsible for any mistakes or incorrect design.  ALWYAS confirm with your local engineer or building professional before construction.  These plans are not designed for high wind areas or heavy snow loads.

Need custom size lean-to built and looking for a print?  We might be able to help you with the print.  We can do a simple print for around $85 (excluding materials list).