FL41639 – G.A.P. Roofing
Florida product approval FL41639-R1 for Roofing Products – Underlayments, as listed in ProdApproval’s data as of Sep 29, 2026.
- FL#
- FL41639-R1
- Manufacturer
- G.A.P. Roofing
- 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 FL41639-R1
| Approval # | Model | Description | Design pressure | Wind-borne debris | HVHZ | Outside HVHZ |
|---|---|---|---|---|---|---|
| FL41639.1 | WaterGuard Self-Adhered Hybrid Rain & Ice | A self-adhered underlayment used as an alternative to mechanically attached ASTM D 226, Type II roofing underlayment | N/A | N/A | No | Yes |
Fill a spec sheet with FL41639
On the contractor form, go to the Roofing Products – Underlayments row and type 41639 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.