Florida Product Approval FL7263: Hurricane-Zone Wind Ratings
Quick answer
Florida Product Approval FL7263-R7 certifies Interlock's metal roofing for the 8th Edition (2023) Florida Building Code. Backed by a Professional Engineer's sealed evaluation, it publishes maximum design wind pressures up to negative 187.5 psf — verified by testing to UL 580, UL 1897 and TAS 125 — for use anywhere in Florida outside the High-Velocity Hurricane Zone.
What is a Florida Product Approval?
Florida has the most demanding roofing requirements in the United States, born of decades of hurricane experience. Before a roof product can be installed in most of the state, it must carry a Florida Product Approval — a state-issued number, administered under Florida Administrative Code Rule 61G20-3, confirming the product complies with the Florida Building Code. Interlock's approval is FL7263, currently in its seventh revision (R7), and applies to Delta Metal Roof Systems. It was granted under Method 1, Option D (codified material evaluated by an engineer) and is supported by a P.E. Evaluation Report digitally sealed by Robert Nieminen, Florida P.E. No. 59166, of NEMO ETC, LLC.
What wind pressures is Interlock approved for?
The heart of FL7263-R7 is a set of engineer-sealed Maximum Design Pressure (MDP) tables. Each fastening system — different nail and clip patterns over specified plywood decks — is assigned an allowable pressure the roof can resist, expressed in pounds per square foot. The Shingle/Slate profile is approved up to -187.5 psf, the Diamond up to -180 psf, and the Shake up to -110.5 psf. Under Florida rules the MDP already includes a 2:1 factor of safety — the ultimate tested pressure divided by two — so the number is conservative by design. Your designer determines the required pressure for each zone of the roof under ASCE 7-22 and selects the matching system.
Which standards back the numbers?
The MDP values come from physical wind-uplift testing at accredited laboratories, to three recognized standards: UL 580 (uplift resistance of roof assemblies), UL 1897 (uplift resistance of roof-covering systems), and TAS 125 (Florida's own roof-system wind test criteria). Material standards ASTM A653, A792 and B209 govern the steel and aluminum, and quality assurance is administered by UL LLC — an independent auditor that verifies the product coming off the line matches what was approved.
Does it apply everywhere in Florida?
FL7263-R7 is a Non-HVHZ approval. It is valid throughout Florida except the High-Velocity Hurricane Zone — the special jurisdiction covering Miami-Dade and Broward counties, which requires its own approval track. For the vast majority of Florida homes, from the Panhandle to the Gulf and Atlantic coasts outside those two counties, FL7263-R7 is the documentation your building department is looking for.
Frequently Asked Questions
What is Florida Product Approval FL7263?
FL7263 is Interlock's statewide Florida Product Approval number, currently in revision R7. It is backed by a Professional Engineer's evaluation confirming that Delta Metal Roof Systems comply with the 8th Edition (2023) Florida Building Code for wind resistance, allowing the products to be permitted across Florida outside the High-Velocity Hurricane Zone.
How much wind pressure is Interlock rated for in Florida?
FL7263-R7 publishes engineer-sealed Maximum Design Pressures by system — up to -187.5 psf for Shingle/Slate, -180 psf for Diamond, and -110.5 psf for Shake. These are allowable values with the code's 2:1 safety factor already applied.
Can I use an Interlock roof in Miami-Dade or Broward?
FL7263-R7 is a Non-HVHZ approval, so it does not cover the High-Velocity Hurricane Zone that includes Miami-Dade and Broward counties. It is valid throughout the rest of Florida. HVHZ homeowners should confirm current options with Interlock and their local building official.
Who verified the FL7263 wind ratings?
The approval is supported by a P.E. Evaluation Report prepared and digitally sealed by Robert Nieminen, a Florida Professional Engineer (License No. 59166), through NEMO ETC, LLC. Quality assurance is administered by UL LLC, and wind testing followed UL 580, UL 1897 and TAS 125.
Sources
- Florida Building Commission — Product Approval FL7263-R7 — Delta Metal Roof Systems
- NEMO ETC, LLC — P.E. Evaluation Report PEER-DBP-001.A.R6 — Sealed by Robert Nieminen, FL P.E. 59166
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Last reviewed 2026-07-11 · Reviewed by Scott Plumptree, Director of Marketing