● ActiveHVHZ approvedLast checked Oct 21, 2026
TAMKO TW Underlayments & Moisture Guard
Florida product approval and Miami-Dade NOA.
Check: Max 30 days exposed; no recover; cover must be a metal or other assembly whose NOA allows an ASTM D1970 underlayment.
FL #FL12328-R9
Miami-Dade NOA23-0804.03
NOA expires07/05/2027In 9 months
Approval details
- Manufacturer
- TAMKO · 220 W. Fourth Street, Joplin, MO 64801
- Category
- Roofing · Leak barrier · Self-adhered rubberized asphalt
- Approved in HVHZ
- Yes
- Deck type
- Wood
- NOA approved
- 11/22/2023 · replaces NOA Revises NOA 22-0628.09
Official documents
PDFMiami-Dade NOA 23-0804.03miamidade.govPDFFL12328-R9 evaluation report, TAMKO underlayments (HVHZ; non-HVHZ report also issued)floridabuilding.org
PDFTW Underlayment Application InstructionsInstall instructions · tamko.comPDFTW Underlayment Data SheetData sheet · tamko.comPDFMoisture Guard Application InstructionsInstall instructions · cdntamkowebsiteprod.azureedge.netPDFMoisture Guard Data SheetData sheet · tamko.com
Verify on floridabuilding.org ↗Products this NOA lists
TW Metal and Tile Underlayment · Moisture Guard · TW Underlayment
Quick answers
What is the FL number for TAMKO TW Underlayments & Moisture Guard?
FL12328 (HVHZ). The Miami-Dade NOA is 23-0804.03.
Is TAMKO TW Underlayments & Moisture Guard approved in the HVHZ?
Yes, on wood decks. The NOA expires 07/05/2027.
Public record. Always verify on the official source before you permit.