● ActiveHVHZ approvedLast checked Oct 21, 2026

GAF Premium Acrylic HydroStop System over Steel Decks

Florida product approval and Miami-Dade NOA.

Check: Insulated steel decks, max design pressure -75 psf; GAF HydroStop Approved Applicator required.

FL #FL20663-R26
Miami-Dade NOA23-0327.11
NOA expires06/22/2028In 20 months

Approval details

Manufacturer
GAF · 1 Campus Drive, Parsippany, NJ 07054
Category
Roofing · Liquid applied · Elastomeric acrylic
Approved in HVHZ
Yes
Deck type
Steel
NOA approved
07/06/2023 · replaces NOA Renews and revises NOA 18-0321.10

Official documents

Verify on floridabuilding.org ↗

Products this NOA lists

GAF Cleaning Concentrate (formerly United Cleaning Concentrate) · GAF Metal Roof Primer (formerly Acrylex 400 Primer) · GAF BarrierGuard Surface Coating (formerly HydroStop BarrierGuard Waterproofing) · GAF SureBond Primer · GAF UniBase Primer · Lock-Down Primer · GAF FlexSeal Sealant · GAF Premium Acrylic HydroStop Base Coat · GAF Premium Fabric (formerly HydroStop PremiumCoat Fabric) · GAF Premium Brush-Grade Acrylic Flashing (formerly HydroStop PremiumCoat Butter Grade Flashing) · GAF Spray-Grade Acrylic Flashing (formerly United Coatings Roof Mate Liquid Fabric) · GAF Premium Acrylic HydroStop Top Coat (formerly HydroStop PremiumCoat Finish Coat) · GAF TrafficCoat Pedestrian Surface Coating · GAF 2-Part Roofing Adhesive · RUBEROID Mop Smooth · RUBEROID 20 Smooth · RUBEROID HW Smooth · RUBEROID HW 25 Smooth · Matrix 101 Premium SBS Membrane Adhesive

Quick answers

What is the FL number for GAF Premium Acrylic HydroStop System over Steel Decks?

FL20663 (HVHZ). The Miami-Dade NOA is 23-0327.11.

Is GAF Premium Acrylic HydroStop System over Steel Decks approved in the HVHZ?

Yes, on steel decks. The NOA expires 06/22/2028.

Public record. Always verify on the official source before you permit.