● ActiveHVHZ approvedLast checked Oct 21, 2026
Alpha ProTech REX SynFelt & TECHNO Synthetic Underlayments
Florida product approval and Miami-Dade NOA.
Check: Not approved under tile; for shingles, shakes, slate and non-structural metal, no hot mopping, and max 30 days exposed.
FL #FL12512
Miami-Dade NOA25-0729.10
NOA expires10/04/2030In 48 months
Approval details
- Manufacturer
- Alpha ProTech · 301 South Blanchard Street, Valdosta, GA 31601
- Category
- Roofing · Underlayment · Synthetic (polypropylene)
- Approved in HVHZ
- Yes
- Deck type
- Wood
- NOA approved
- 09/18/2025 · replaces NOA 23-0817.06
Official documents
Verify on floridabuilding.org ↗Products this NOA lists
REX SynFelt · TECHNOply · TECHNO SB 25 · TECHNO SB 50 · TECHNO SB ULTRA
Quick answers
What is the FL number for Alpha ProTech REX SynFelt & TECHNO Synthetic Underlayments?
FL12512 (HVHZ). The Miami-Dade NOA is 25-0729.10.
Is Alpha ProTech REX SynFelt & TECHNO Synthetic Underlayments approved in the HVHZ?
Yes, on wood decks. The NOA expires 10/04/2030.
Public record. Always verify on the official source before you permit.