FL20320 – Greenstone Slate
Florida product approval FL20320-R5 for Roofing Products – Roofing Slate, as listed in ProdApproval’s data as of Sep 29, 2026.
- FL#
- FL20320-R5
- Manufacturer
- Greenstone Slate
- Code version
- 2023 Florida Building Code
- Status in our data
- Approved
- Products
- 1
Official record on floridabuilding.org →Use on a spec sheet →
Verify approval status on floridabuilding.org before submitting.
Approved products under FL20320-R5
| Approval # | Model | Description | Design pressure | Wind-borne debris | HVHZ | Outside HVHZ |
|---|---|---|---|---|---|---|
| FL20320.1 | Vermont Slate | ASTM C 406, Grade S1 roofing slate shingles | N/A | N/A | Yes | Yes |
Fill a spec sheet with FL20320
On the contractor form, go to the Roofing Products – Roofing Slate row and type 20320 in the Florida Product Approval # box to fill the row. Walton County users can print a PDF that follows the county’s sheet; see the Walton County Product Approval Specification Sheet guide.