What Is Miami-Dade NOA Approval for Impact Windows?

If you're shopping for impact windows in Miami-Dade, Broward, or coastal Palm Beach County, you'll see two terms repeated: Florida Product Approval and Miami-Dade NOA. Here's what each means.

Florida Product Approval

This is the statewide approval system administered by the Florida Department of Business and Professional Regulation. Every impact window or door legally installed anywhere in Florida must hold a current Florida Product Approval number.

Miami-Dade NOA

The Notice of Acceptance (NOA) is an additional, stricter approval issued by Miami-Dade County. Products must pass large-missile impact testing (a 9-pound 2x4 fired at 50 ft/sec) and cyclic wind pressure cycles that simulate sustained hurricane forces.

HVHZ (High Velocity Hurricane Zone)

The High-Velocity Hurricane Zone is Miami-Dade and Broward counties, in full. No part of Palm Beach, Martin or St. Lucie County is inside it. Inside the HVHZ, every impact product must hold a Miami-Dade NOA — Florida Product Approval alone is not enough. Outside it, Florida Product Approval governs, which widens the range of qualifying products without lowering the design pressure your openings must hold.

What an NOA actually contains

An NOA is not a badge or a logo. It is a numbered document, several pages long, and what it approves is narrower than most people expect. It names the manufacturer and the specific product line, and then it sets limits: the configurations covered, the maximum sizes those configurations may be built to, the design pressures each size is rated for, the glass make-up, and the anchoring schedule — which fasteners, at what spacing, into which substrate.

That last part is where approvals are most often lost on site. A window can be the right product with a valid NOA and still fail inspection because it was anchored at a spacing the NOA does not permit, or fitted into a substrate the NOA does not cover. The document approves an assembly and an installation method together, not a product in isolation.

NOAs expire

Every NOA carries an expiration date, and what matters is that it is current when the permit is issued. Manufacturers renew them on a rolling basis, and a product line can be revised in a way that supersedes an earlier NOA. This is a practical problem rather than a theoretical one: a quote assembled from an old spec sheet can reference an NOA number that is no longer the one in force by the time the package reaches plan review.

How to verify an NOA yourself

You do not have to take anyone's word for it. Miami-Dade County publishes its approved products, and an NOA number can be looked up against the product it belongs to. Three things are worth checking:

1. The number is current, not expired. An expired NOA is not a technicality — plan review will reject it.

2. The product on the NOA is the product on your quote. Manufacturers hold separate NOAs for separate product lines, and a quote that names one line while citing another line's number is either an error or a substitution.

3. Your sizes are inside the approved limits. The NOA caps dimensions per configuration. A large opening can push past what the approved size table allows, which means a different product, not a bigger version of the same one.

Bottom line

If your installer cannot show you the current NOA number for the exact product going into your home, walk away. We supply NOA documentation with every quote, and we file it with the permit ourselves — the approval paperwork is our job, not yours.

If you want to know which approval pathway applies at your address, get a free measurement and written quote or call (561) 464-6272.

FL License #CGC1530499 • In-house W-2 crews • Fixed-price written quotes • Permits pulled directly with your local building department.