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Common WPI-8 Deficiencies (and How to Avoid Them)
Deficiencies are the single biggest source of WPI-8 delay. Most are predictable and fixable — but only if you know what inspectors flag and when they flag it. Here are the items that come up most often on coastal Texas projects.
Why deficiencies matter
Each deficiency requires a correction and a re-inspection before the file can be closed out. Re-inspections cost time, cost money (typically $550 per visit), and can stall closing if they pile up at the end of the project.
The good news: nearly every common deficiency is preventable with one practice — make sure the field crew can read the sealed drawings and is following them. The deficiencies below are not exotic. They are the same ones that come up over and over.
Connection deficiencies
1. Missing or wrong-size hurricane straps and clips
The drawings call for a Simpson H2.5 or H10A at every truss-to-top-plate connection. The crew installs them at every other one, or substitutes a smaller clip than what was specified. This is the most common single deficiency.
Walk the framer through the connection schedule before framing starts. Keep the manufacturer-specified clips on the jobsite — substitutions are not free passes.
2. Insufficient anchor bolts at the sill plate
Code requires anchor bolts at specific spacing and embedment depth. Common errors include skipping bolts at corners, using wedge anchors where epoxy was specified, or not achieving full embedment because the slab was poured short.
Verify anchor layout before slab pour, not after. After the pour, a missing bolt is an epoxy retrofit — not impossible, but expensive and inspectable.
3. Missing nailing schedule compliance
Wood structural panels (sheathing) require specific nail size, spacing at edges, spacing at field, and edge distance. Inspectors check for over-driven nails, missed nails, wrong nail size, and incorrect spacing — especially at panel edges and the corner zones where wind loads concentrate.
Set the nail gun depth correctly and don’t rely on the framer to “eyeball” 6-inch edge spacing. Mark the panels.
Uplift and load path deficiencies
4. Broken load path from roof to foundation
Wind uplift travels from the roof down through the wall framing into the foundation. Every connection in that path has to transfer the load. Common breaks: missing strap from rafter to top plate, missing strap from top plate to stud, or a stud-to-sill connection that relies on toe-nails alone.
Treat the load path as a continuous chain. Every link has to be there. The drawings show every connection — don’t skip any.
5. Header and beam connections under-specified
Door and window headers — especially garage door headers — are concentration points for uplift and lateral load. Common issues: missing jack studs, missing header straps, or a header-to-king-stud connection that doesn’t match the schedule.
Garage door openings are inspector hot spots in coastal Texas. Get those connections right the first time.
Opening protection deficiencies
6. Windows and doors without product approval
If the design wind speed is 140 mph or higher, code requires opening protection — either impact-rated glazing or shutters. Each product needs a Florida or Texas product approval (NOA) demonstrating compliance. A common issue is product mix-up: the architect specified one model and the contractor installed a similar but uncertified one.
Keep product approval documents on file from the moment the order goes in. The inspector will ask for them.
7. Garage doors without windstorm rating
Standard garage doors fail in hurricanes. Code requires reinforced or rated garage doors in the catastrophe area, especially for 140+ mph design wind speeds. Installing a stock door is an automatic deficiency.
Order a windstorm-rated garage door from the start. Retrofitting after the slab and framing are done is much harder than ordering the right one upfront.
Cladding and roofing deficiencies
8. Roofing nails too short or wrong pattern
Asphalt shingles and metal roofing both have specific fastening requirements. Short nails that don’t penetrate the deck the required amount are a common finding — as are missed nail patterns at hip and ridge.
Use the manufacturer’s high-wind nailing pattern, not the standard one. Coastal Texas is a high-wind zone by definition.
9. Soffit and fascia attachment
Wind doesn’t just push on walls and roofs — it pulls under eaves and rips off soffits. A loose soffit becomes a path for wind into the attic, and once wind is in the attic, it lifts the roof from inside. Inspectors check soffit attachment, fascia connections, and vent details.
Don’t treat the soffit like a finish detail. It’s a structural component in a hurricane.
10. Metal building cladding fasteners
On metal buildings, the fastener spacing for wall and roof panels is governed by the design wind pressure. Common errors: spacing too wide at corners and edges (where pressures are highest), wrong screw type, or missing washers.
Corner zones and edge zones need tighter fastener spacing than the field. The drawings will show it. Follow them.
The pattern: Most deficiencies happen because someone in the field substituted, skipped, or eyeballed something that the sealed drawings spelled out. The single best prevention is a pre-construction walkthrough where the framer, the GC, and the engineer/inspector go over the load path together.
What happens when a deficiency is found
The inspector documents the issue, photographs it, and lists it on the WPI-2-BC-8 report. The contractor corrects the issue. The inspector returns for a re-inspection (this is where the $550 re-inspection fee applies). Once the correction is verified, the deficiency is cleared from the open list. Once the open list is empty, the WPI-2E final submittal can move forward.
Avoid deficiencies. Hit the schedule.
Oasis Engineering inspectors flag issues early — at foundation and framing — when they’re cheapest to fix. Pay deposit online and we coordinate with your GC from day one.
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