● ActiveHVHZ approvedLast checked Oct 21, 2026

GAF Waterproofing Systems over Concrete Decks

Florida product approval and Miami-Dade NOA.

Check: Non-insulated structural concrete decks only; GAF Approved Applicator and ASTM D5957 integrity test required; not over lightweight insulating concrete.

FL #FL4911-R28

Miami-Dade NOA25-1208.08

NOA expires02/28/2028In 16 months

Approval details

Manufacturer: GAF · 1 Campus Drive, Parsippany, NJ 07054
Category: Roofing · Waterproofing · Elastomeric and SEBS coatings
Approved in HVHZ: Yes
Deck type: Concrete
NOA approved: 08/27/2026 · replaces NOA Revises NOA 25-0129.11

Official documents

PDFMiami-Dade NOA 25-1208.08miamidade.gov PDFGAF Florida approval FL4911-R28, Waterproofing and Plaza Deck Systems (HVHZ; non-HVHZ PEER-GAF-011.A also issued)gaf.com

Verify on floridabuilding.org ↗

Products this NOA lists

GAF Surface Seal SB (formerly TOPCOAT Surface Seal SB) · GAF FlexSeal Sealant · GAF Bonding Primer · GAF Surface Seal SB Thermoplastic Rubber Coating · GAF TrafficCoat Pedestrian Surface Coating · GAF Premium Acrylic HydroStop Base Coat · GAF Premium Fabric (formerly HydroStop PremiumCoat Fabric) · GAF High Solids Silicone Roof Coating · GAF Multi-Purpose Primer · GAF Bleed-Block Asphalt Primer

Quick answers

What is the FL number for GAF Waterproofing Systems over Concrete Decks?

FL4911 (HVHZ). The Miami-Dade NOA is 25-1208.08.

Is GAF Waterproofing Systems over Concrete Decks approved in the HVHZ?

Yes, on concrete decks. The NOA expires 02/28/2028.

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