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Miami — Tier-1 Pillar

Miami Roofing — HVHZ Deck, Secondary Water Barrier, FBC 7th Edition

Miami roofing reality. HVHZ deck nailing, secondary water barrier (self-adhered underlayment), FBC 7th Edition (2023) standards, concrete tile vs metal vs TPO/modified bitumen, NOA-listed components, SB 4-D milestone for condos. $22K-$125K typical.

~1 min read·Updated 2026-04-23

Every component in a Miami-Dade or Broward roof must be NOA-listed. HVHZ deck nailing (ring-shank nails at 6" OC on perimeter, 12" OC field), self-adhered secondary water barrier membrane over the deck, then the primary covering — concrete tile, metal (standing seam, stamped shingle), TPO or modified bitumen on flat. Re-roof triggers Miami-Dade (or city) permit with inspector verification of deck and underlayment.

AskBaily routes Miami roofing to one Florida CILB Certified Roofing Contractor who understands HVHZ inspection sequencing.

Frequently asked questions

Do I need a permit to re-roof in Miami? Yes — every Miami-Dade re-roof requires permit with deck inspection, underlayment inspection, and final.

What is the secondary water barrier requirement? FBC 7th Edition HVHZ requires a self-adhered modified-bitumen or synthetic membrane installed over the deck before primary roofing. This is the code-mandated second line of defense in a hurricane.

How much does a Miami re-roof cost? Concrete tile: $18-$35/sqft. Metal (standing seam): $20-$40/sqft. Flat TPO/modified bitumen: $12-$24/sqft. Typical single-family: $22K-$85K. Brownstone or larger single-family: $60K-$125K.

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Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.

He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.

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