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.
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.
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.
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.