Roofing and roof repair - Roof, Clips
Roof to Wall Connections: In houses with masonry walls, it is common to find a horizontal or "flat wise" 2x8 lumber plate that is bolted or strapped to the top of the masonry wall. The roof and the trusses or rafters are then connected to this plate using toe nails and, in wind resistant construction, metal straps. In newer wind resistant masonry construction, the plate may be missing and the straps may be embedded directly into the top of the concrete wall (in a bond or tie beam) and the trusses and rafters will be set directly on the walls with a metal plate or some other sort of moisture barrier between the top of the wall and the wood. In early applications of straps, it was considered sufficient to use straps or clpis on every truss or rafter. Today, every truss or rafter is anchored with a strap if the builder is following high wind construction guidelines for a roof.

Roofing and roof repair - Roof, Clips Truss Strapping - Roof To Wall  Attachment the roof

Toe Nalis

Dunn Contracting is licensed and insured to instal clips on your home so you can save money on your homeowners insurance and have a stronger structure.

Wind Mitigation Roof to wall attachments

  Section four of the wind mitigation form is about roof to wall attachment. Specifically how is the roof system secured to the wall structure and what is the weakest connection. This is what the Wind Mitigation Inspection report asks and inspector to look for.

  1.  Toe Nails Rafter/truss anchored to top plate of wall using nails driven at an angle through the rafter/truss and attached to the top plate of the wall.
  2.  Clips Metal attachments on every rafter/truss that are nailed to one side (or both sides in the case of a diamond type clip) of the rafter/truss and attached to the top plate of the wall frame or embedded in the bond beam.
  3.  Single Wraps Metal Straps must be secured to every rafter/truss with a minimum of 3 nails, wrapping over and securing to the opposite side of the rafter/truss with a minimum of 1 nail. The Strap must be attached to the top plate of the wall frame or embedded in the bond beam in at least one place.
  4.   Double Wraps Both Metal Straps must be secured to every rafter/truss with a minimum of 3 nails, wrapping over and securing to the opposite side of the rafter/truss with a minimum of 1 nail. Each Strap must be attached to the top plate of the wall frame or embedded in the bond beam in at least one place.
  5.  Structural Anchor bolts structurally connected or reinforced concrete roof.
  6.  Other: ______________________________________
  7.  Unknown or Unidentified
  8.  No attic access



  Other than none, toe nails is the weakest attachment and the attachment is generally stronger moving from choices A through E.

  It is important to note that straps are not the same a wraps. A strap must be placed next to the truss and be nailed on both side to be classified as a wrap. If it does not it is usually listed as a clip. Structurally connected walls are usually incorporate concrete roof decks but the home may also be built and designed with I-beams or some other similar construction design, which is fairly rare.