Retrofit truss anchor installed mechanically fastens into the face of masonry or concrete. Because the nail tips usually poke through the back side of the truss or rafter, you can count the number of nails from either side. As chairman of the Florida Homebuilders Association’s Codes and Standards Committee, I have been following hurricane-related structural issues for years and have helped to develop some of the language in the new code. If you can get directly under one truss, the hose is long enough to see the trusses to the left and to the right, which means you could inspect up to three trusses per hole. It’s only required for detached single-family structures valued at $300,000 or more that are in the “wind-borne debris region,” where design wind speeds exceed 120 miles per hour, a zone that extends about 5 miles inland in most of northern Florida, but includes almost half of the southern tip of the state (Figure 1). FIGURE 2. Rafter tie engineered for wood frame structures built in a factory environment. If, on the other hand, there are not enough nails holding the clip to the truss, it’s up to the engineer to decide whether the wall plate must be exposed. Their manufacturing facility consistently produces top-quality plates with some of the highest loads in the industry. The good news is that just tying roof framing to the wall plate will fix a weak point and make the house better able to survive a hurricane. Realizing the problems involved for roofers and their customers, I have also devised some techniques and tricks that can reduce the financial and time burden for everyone involved. They’re available in versions for wood-framed and masonry walls. For gable-end roofs, the Florida code requires that you start by tying down roof-framing members within 6 feet of each corner. Low profile truss anchors provide uplift and lateral load resistance. The LRUZ offers comparable or better load capacity to other rafter hangers at a reduced cost while using fewer fasteners. SCN Smooth-Shank HDG Connector Nail (120-Pack), H2.5A 18-Gauge ZMAX Galvanized Hurricane Tie, Strong-Drive 1-1/2 in. Snapping the end tab off shouldn't be any problem. If that’s not the case, then you have to go through the roof or soffit. If it's an end rafter outside of the wall, much of the load is being carried by blocking over the exterior wall anyhow. Contractors can inspect the roof connections through a small hole in the soffit, using an inexpensive camera probe. If you have to go in through the roof or perhaps through a wall, I recommend using an HGA10 Hurricane Gusset Angle connector (Figure 6), available from either USP Structural Connectors or Simpson Strong-Tie. https://www.strongtie.com/resources/literature/wood-construction-connectors-catalog. Please call us at: 1-800-HOME-DEPOT (1-800-466-3337), Please enter in your email address in the following format: you@domain.com. Designed to tie trusses and rafter to wall systems. If you can access the wall plate and roof from an unfinished ceiling, use a connector like the Simpson H1 clip (see Figure 3). New Florida codes require that homes valued at over $300,000 in the wind-borne debris region, as shown on this map, have their roof-wall connections upgraded when the roof covering is replaced. In Florida, roofers aren’t licensed to do structural work, so they have to farm out the structural repairs to a contractor who has a license to do general construction. But that leaves the house exposed to any rain that comes along while you are working or waiting for the inspector to show up. Homeowners don’t have to spend more than 15% of the total cost of a reroof job on upgrading roof-wall connections. Light-capacity girder truss anchor nails to the truss/rafter and the stud. In the case of masonry walls, you can use the HGAM10, which comes with special masonry fasteners (which require drilling holes). Thank you! Truss/rafter-to-plate and stud-to-plate connectors resist wind and seismic forces including embedded truss anchors, girder tiedowns, hurricane/seismic anchors, and moisture barrier plates. Use of this site is subject to certain Terms Of Use. For a rafter-to-face connector, flatten the top flange into the face plate. Riveted anchors provide a moisture barrier in addition to uplift and lateral resistance all in one product. Stay Up to Speed FIGURE 5. FIGURE 4. For hip roofs, the code specifies that hip and girder rafters or trusses be connected to exterior wall plates. The feasibility of inspecting the connections through the soffit depends on soffit construction. Don’t worry about the jack trusses that are involved in that hip, but instead move on to the next hip or gable. If you can’t see through the soffit vents, and they won’t easily come off, you can peek into the structure with a camera probe, such as the Ridgid SeeSnake Micro, or the Milwaukee M-Spector Digital Inspection Camera.
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