Wood Decking Cost Per Linear Foot | Bigfoot Windows & Roofing

Why This Matters

The Hidden Cost Most Roofers Don’t Mention Until Tear-Off Day

Rotted or undersized decking is the most common unexpected charge on a South Florida roofing job.

You get a quote. You sign a contract. The crew shows up, pulls the first few shingles, and suddenly a crew member is calling up to you from the roof: “We found soft decking.” Now what?

This scenario plays out on tens of thousands of South Florida re-roofs every year. Homes built before Hurricane Andrew in 1994 — and even some built after — frequently have decking that is under-nailed, partially rotted from moisture intrusion, or made of a wood species that does not meet current Miami-Dade roofing code requirements. The problem is almost impossible to diagnose from a driveway estimate; it only becomes visible when the old material comes off.

Understanding how roofers price extra decking, what drives costs up in HVHZ counties, and what your insurance might cover gives you real negotiating footing before you sign anything.

South Florida Context

Why HVHZ and Miami-Dade Permitting Change the Math

The High Velocity Hurricane Zone is not a marketing phrase. It is a code environment with specific material and fastener requirements that raise the cost of every roofing component — including decking.

Miami-Dade and Broward Counties sit inside the HVHZ, the strictest wind-load building code jurisdiction in the United States. Florida Building Code Section 1504 and the Miami-Dade product approval system require that roof assemblies — including the structural deck beneath the shingles, tile, or metal — meet uplift-resistance thresholds that exceed most other U.S. counties.

Practically, that means:

• Plywood grade: Florida Building Code requires a minimum of 19/32-inch (nominally ⅝”) CDX or equivalent structural-grade plywood for most re-roof applications in the HVHZ. Some pre-1994 homes have 3/8” boards that must be replaced in full.
• Fastener schedule: Ring-shank (deformed-shank) nails at 6-inch spacing at panel edges and 12-inch in the field are a baseline HVHZ requirement. Smooth-shank nails used in older installs will fail a Miami-Dade inspection.
• Mandatory inspections: Miami-Dade County requires a deck inspection before any new underlayment is installed. If the inspector finds a deficiency, work stops until it is corrected. That adds time — and indirect labor cost — to any decking replacement.

In Palm Beach County, which sits outside the HVHZ, requirements are somewhat less strict, but permitted re-roofs still require structural deck compliance with the current Florida Building Code. Expect directionally lower costs there than in a full HVHZ job.

Cost Breakdown

How Roofers Actually Price Extra Decking

Sheets, squares, and linear feet — here is what each unit means and which one your contractor should be quoting.

The roofing industry prices decking replacement almost universally by the sheet (a standard 4-foot × 8-foot panel = 32 square feet) or by the square (100 square feet of roof area). If a contractor quotes you a price “per linear foot,” they are most likely pricing by the running length of a specific board (such as a fascia board or ridge board) rather than sheathing panels. Clarify the unit before you agree.

Below are directional cost ranges based on the South Florida market as of mid-2026. These are not Bigfoot-published price lists; they reflect typical market conditions and should be treated as estimates. Your actual cost depends on lumber prices, job complexity, slope, and HVHZ permit requirements.

All figures are directional market estimates, not Bigfoot price-list values. Actual cost varies by job conditions, lumber pricing at time of purchase, and permit complexity.

What Drives the Price Up in South Florida?

Five factors move the cost of extra decking higher on a Miami-Dade or Broward job compared to a non-HVHZ roof:

1. Wood species and grade: CDX plywood in the required 19/32” thickness costs more than OSB. Southern Yellow Pine structural sheathing, when specified for certain applications, commands a premium in the South Florida lumber market relative to inland Florida.
2. Ring-shank nail schedule: Ring-shank nails cost more than smooth-shank and take longer to drive, especially by hand in tight areas near ridge lines.
3. Disposal: Rotted or demolished old decking adds to dumpster weight and disposal fees. Two-layer tear-offs on homes that had a second roof layered over the first generate significantly more debris.
4. Inspection hold: Miami-Dade requires a mandatory deck inspection before the underlayment stage. If the inspector is not available same-day, the crew cannot proceed, which can add a half-day or full-day labor cost that gets absorbed into the project.
5. Structural framing issues: Decking replacement sometimes exposes damaged or undersized rafters or trusses underneath. Addressing those falls outside a standard roofing scope — which is where having a Certified General Contractor on the same project matters. A contractor authorized for structural modifications can assess framing, upgrade hurricane straps, or address code-driven structural scope in-house, so you are not left managing a separate structural contractor while the roof sits open.

Comparison

Partial Decking Replacement vs. Full-Deck Replacement

Knowing the difference before tear-off day helps you budget and negotiate with fewer surprises.

One important nuance: once a roofer exposes a section of decking, the building inspector can require that all decking in a given area meet current code — not just the sheets being replaced. This can convert what looked like a $400 partial job into a $3,000 zone-wide replacement. Always ask your contractor how they handle inspector-directed upgrades and whether the original contract covers them or prices them separately.

Material Guidance

Which Wood Species and Panel Type Is Right for Your HVHZ Roof?

Florida Building Code and Miami-Dade product approval requirements narrow the field considerably. Here is a plain-English breakdown of the options and their trade-offs:

• CDX Plywood (19/32” or thicker): The standard for HVHZ re-roofs. “CDX” refers to the two face veneers (C-grade face, D-grade back) and the exterior-grade adhesive (X). It holds ring-shank nails well, resists short-term moisture exposure, and is widely available in the South Florida lumber market. This is the default specification on Bigfoot roofing jobs in Miami-Dade and Broward.
• OSB (Oriented Strand Board): Lower cost per sheet, but swells and delaminates faster than CDX plywood when exposed to the humidity and moisture intrusion common in South Florida. OSB is generally acceptable under Florida Building Code for non-HVHZ applications; it is not Bigfoot’s field recommendation for Miami-Dade or Broward jobs where moisture resilience matters.
• Southern Yellow Pine boards (skip-sheathing or solid boards): Found on older homes, especially those built before the 1960s. When replacing, crews typically convert to panel sheathing for a flat, code-compliant nailing surface. Board-for-board replacement in SYP is possible but slower and more expensive per square foot than panel replacement.

For metal roofing installations in particular, a flat, uniform decking surface is critical. Englert standing seam panels run continuously from bottom to top with no horizontal seams — any deck irregularity telegraphs through the finished panel. Full-deck replacement is more often warranted on metal re-roofs than on shingle jobs for this reason.

What to Expect

How the Decking Replacement Process Works on a Permitted South Florida Re-Roof

1. Tear-off and visual inspection: The crew removes existing shingles, tile, or metal. A crew lead walks the deck and marks soft spots, visibly rotted panels, or panels with inadequate fastener schedules.
2. Pre-work documentation: The contractor photos the affected areas. This documentation supports any insurance claim for storm-caused damage and the building inspector’s file.
3. Deck inspection (Miami-Dade required): In Miami-Dade County, the building department must inspect the exposed deck before new underlayment is installed. This is a mandatory stop — not optional. Scheduling the inspector in advance is part of the project management process.
4. Decking replacement: Damaged sheets are removed and replaced with CDX plywood in the HVHZ-required thickness and grade. Panels are fastened per the approved ring-shank nail schedule.
5. Inspector sign-off: The deck passes inspection. Underlayment, peel-and-stick, or other secondary water barriers are then installed per the approved roofing system.
6. Roofing system completion: Shingles, metal panels, or tile are installed over the approved deck and underlayment.

If framing issues are discovered during Step 1 — cracked rafters, missing hurricane straps, or truss damage — a contractor authorized for structural modifications under a Certified General Contractor scope can address those within the same project workflow, coordinating a single permit path rather than requiring the homeowner to hire a separate structural contractor and restart the permitting process.

Who We’re Not the Right Fit For

• Homeowners who need only a quick patch with no permit: Bigfoot pulls permits on every re-roof and every structural repair. If you are looking to skip the inspection process to save time, we are not the right contractor for that approach.
• Projects in counties outside our service area: We work in Miami-Dade, Broward, and Palm Beach. If your property is in another Florida county, we cannot serve you.
• Homeowners seeking the lowest possible bid at the expense of code compliance: HVHZ fastener schedules and CDX-grade requirements exist because cheaper alternatives fail in hurricanes. If the priority is price alone over code-compliant installation, there are contractors who will take that job — we are not one of them.
• Commercial high-rise or large multifamily projects: Our residential and small commercial focus means very large commercial roofing programs are typically outside the scope we staff for.