How Do I Attach a Veranda with a Roof to a House?

Written by mark morris
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How Do I Attach a Veranda with a Roof to a House?
Verandas are attached using ledger boards. (rocking chairs on porch image by Kathy Burns from Fotolia.com)

A veranda is a traditional open porch. In American architecture, it is a common feature on Georgian and plantation-style homes, as well as countless late 19th- and early 20th-century farmhouses across the Midwest. To attach a veranda with a roof, you will need to establish a ledger board, or horizontal connecting beam, on the wall for the top of the roof and the floor frame of the veranda.

Skill level:
Moderate

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Things you need

  • Tape measure
  • Chalk line
  • String level
  • Circular saw
  • Pry bar
  • Hammer
  • Drill
  • ¼-inch bit
  • Lag bolts
  • Impact driver
  • Hangar brackets
  • Treated deck screws
  • 2-by-6 lumber

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Instructions

  1. 1

    Mark the siding at the height of the roof, minus the thickness of the decking and shingles---typically 1 inch---and at the height of the veranda floor minus the thickness of the floor boards, which are typically either ¾-inch-thick tongue-and-groove or 5/4 decking boards. Use a string level and chalk line to mark a line along the wall horizontally from end to end of the veranda.

  2. 2

    Draw a parallel line 5 1/2 inches below the entire length of each line to mark the bottom edge of the ledger board. Cut along these lines, through the siding to the face of the frame boards below, with a circular saw. Cut vertically between the ends of the lines at both ends of both sets of lines.

  3. 3

    Pry the siding from the cut slots with a hammer and pry bar to expose the frame underneath. Measure the length of the cuts, and cut a piece of 2-by-6 lumber with the circular saw to fit each. These are your ledger boards. Measure and mark the position of each stud onto the lumber pieces, and drill two ¼-inch pilot holes in line with each stud.

  4. 4

    Fit the ledger boards into the open slots at the floor and roof heights. Using an impact driver, drive one 1/4-by-3-inch lag bolt through each pilot hole in both ledger boards into the frame of the wall. Caulk along the top edge of each ledger board to seal the gap.

  5. 5

    Starting from the left edge, mark the veranda floor ledger every 16 inches with a rafter square. Mark the roof ledger every 24 inches in the same way. Install a 2-by-6 joist hangar on each mark on the floor ledger and a 2-by-6 rafter hangar on each mark on the roof ledger. Attach the right side of each bracket by installing 1 5/8-inch treated deck screws in each hole in each bracket. Leave the left side loose.

  6. 6

    Fit a rafter in each bracket on the roof ledger, and press the loose side against it to hold it snugly. Install a screw through each hole in each bracket on the ledger into the rafter. Repeat for floor joists in each floor ledger bracket. Complete the floor frame, and build your supporting beam for the outside edge of the roof before adding rafters to frame out the roof section. Add decking to the floor, and install the roof to complete the project.

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