● ActiveHVHZ approvedLast checked Oct 21, 2026
Garland R-Mer Seal Underlayment
Florida product approval and Miami-Dade NOA.
Check: Not for tile or recover over an existing membrane; OK under metal, shingles, shakes and slate; max 30 days exposed.
Miami-Dade NOA25-0114.04
NOA expires07/19/2030In 45 months
Approval details
- Manufacturer
- Garland · 3800 East 91st Street, Cleveland, OH 44105-2197
- Category
- Roofing · Underlayment · Self-adhered SBS
- Approved in HVHZ
- Yes
- Deck type
- Wood
- NOA approved
- 05/01/2025 · replaces NOA 24-0422.06
Official documents
Verify on floridabuilding.org ↗Quick answers
Is Garland R-Mer Seal Underlayment approved in the HVHZ?
Yes, on wood decks. The NOA expires 07/19/2030.
Public record. Always verify on the official source before you permit.