How to Fix the Edge of a Roof

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Roof edge repairs need to be completed as soon as the damage is noticed. Moisture can build up in the edges of any exterior wood surface, causing premature deterioration. The main goal should be stopping the spread of damage. By patching the edge of the roof before the damage spreads, you can save money on more expensive repairs and add length to the life of your roof.

Things You'll Need

  • Awl
  • Chalk
  • Drywall square
  • Circular saw
  • Metal roof edging
  • Roof felt
  • Staple gun
  • Utility knife
  • Tin snips
  • Hammer
  • Roofing nails
  • Assess the edge of the roof. Look for rotted wood and corroded metal edging. Pry the metal edging away from the roof with a pry bar and probe the wood along the edge with an awl. Mark the shingles with chalk above areas that are soft. Peel back the shingles in areas with a soft or eroded edge and check the decking for signs of rot.

  • Fold the shingles back and prop them up with a piece of lumber over the affected area. Mark a straight line above the damaged area with a drywall square or other straight edge. Cut along the line with a circular saw, with the depth set to the thickness of the decking material. Remove the cut piece with the pry bar.

  • Cut a new piece of decking material, the same thickness as the original, and nail it to the rafter tails in the position of the original piece. Measure the edge of the roof and cut metal roof edging to fit.

  • Staple a layer of roof felt over the new piece of decking, overlapping its edges with the felt on the surrounding roof. Apply a new edge row of shingles from a roll. Cut the piece of edge shingle to fit with a utility knife and nail it in place using 1 inch roofing nails.

  • Measure the edge and use tin snips to cut metal roof edging to fit. Fit it under the shingles and nail it to the decking. Press the lifted shingles back into position, leaving the lumber on top until the heat of the sun smooths any creases.

Tips & Warnings

  • Large rotted areas should be brought to the attention of your insurance company, which will need to determine if any damage is covered. A skilled insurance adjuster can help you find hidden damages.

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References

  • "Home Roofing Repairs;" James E. Brumbaugh; T. Audel; 1975.
  • "Complete Home Repair;" Various Authors; Black & Decker Corporation; 2008.
  • This Old House: Skill Builder
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