How to Attach Fascia Board to Roof Trusses

The do it yourself resource for homeowners from home improvement professionals.

How to Attach Fascia Board to Roof Trusses

Fascia boards are used to cover the ends of roof trusses where the joists and rafters meet at the roof’s edge. Before learning how to attach fascia board to roof trusses, you’ll just need a few standard tools. Homeowners who are comfortable on a ladder and are familiar with basic power tools may repair fascia boards.

How to Attach Fascia Board to Roof TrussesTools

  • 1-inch thick pieces of 8-foot lumber or composite boards:
    You want lumber a little wider than the height of the joists. For example, use 1 x 6 boards to cover 2 x 4 joists or 1 x 8 boards to cover 2 x 6 joists. Select pine boards without cracks, splits, or open knots. Composite fascia boards made from epoxy resin and recycled wood chips and sawdust offer a rot-resistant alternative to pine. Expect to pay more for composite boards.
  • Miter saw
  • Carpenter’s square
  • Pencil
  • 2-inch finishing nails
  • Hammer
  • Nail punch
  • Painter’s caulk
  • Ladder

How to Attach Fascia Board to Roof Trusses Instructions

  1. Remove old fascia boards including old nails that are sticking out.
  2. Starting at a roof corner, lift the first board into place and hold its top edge tightly against the bottom edge of the roof deck.
  3. Mark the place closest to the end of the board that aligns with the center of a joist.
  4. Use the carpenter’s square and pencil to put a straight line at the mark.
  5. Cut the board with a miter saw.
  6. Position the board against the trusses and nail it in place.
  7. Put at least 2 nails at both ends of the fascia board into the joists.
  8. Begin the next piece by placing it against the end of the first board where it ended in the middle of the joist.
  9. Repeat the process of how to attach fascia board to roof trusses until the entire roof edge is complete.
  10. Push the nail heads below the surface of boards with the nail punch.
  11. Seal all seams between fascia boards with painter’s caulk. A wet finger or rag will work well to wipe the caulk smooth.

Get Help with Your Roof Repair Needs

Even if the instructions for attaching fascia board to roof trusses appear simple, other demands on your time may cause the process to be delayed. In this situation, Bay Roofing should be considered for the project. For decades, we’ve been replacing and repairing roofs in New Jersey. For additional information, please contact us.