• In this video, This Old House general contractor Tom Silva explains how to deck over a concrete stoop.

    Steps:

    1. Cut PVC trim boards to wrap around stoop using circular saw.
    2. Counterbore holes in PVC trim with ½-inch-diameter spade bit.
    3. Apply foam adhesive to back of trim.
    4. Run bead of hot-melt glue across miter joints and press trim board against stoop.
    5. Drill holes through each counterbore and into the concrete for tap-in masonry anchors.
    6. Attach trim boards to concrete with masonry anchors; tap in anchors with hammer, then finish with a nail set
    7. Use a drill and ½-inch-diameter plug cutter to cut plugs from PVC trim.
    8. Install plugs into the counterbored holes using hot-melt glue; trim the plugs flush with a sharp chisel.
    9. Attach the wood-composite decking to the top of the concrete stoop using the same masonry anchors.
    10. Conceal each anchor in decking with a plug cut from a composite decking board.
    11. Sweep decking clean of all debris.
    • Difficulty: Moderate
      Working with composite building materials is easy, but attaching to concrete is always challenging
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      Tools List

      • circular saw
        Circular saw
      • speed square
        Speed square
      • hammer drill
        Hammer-drill
      • hammer
        Hammer
      • hot glue gun
        Hot-melt glue gun
      • chisel
        ¾-inch-wide chisel
      • nailset
        Nail set

      Shopping List

      1. Cellular PVC trim boards

      2. Wood-composite decking

      3. Foam adhesive
      for adhering trim and decking to concrete

      4. Carbide-tipped masonry drill bit
      used to bore hole for masonry anchors

      5. Masonry anchors
      used to fasten trim and decking to concrete

      6. ½-inch spade bit
      used to counterbore holes for masonry anchors

      7. ½-inch-diameter plug cutter
      used to cut plugs that fit into counterbored holes

      8. Wood shims