Home / Panel Walls / National Gypsum Company a dba of National Gypsum Services Company
FL18399: National Gypsum Company a dba of National Gypsum Services Company, Exterior Insulation Finish System
2026 code statusReady
FL18399-R4 is listed as Approved under code version 2026.
Last checked against floridabuilding.org: Oct 20, 2026, 6:52 AM ET. See the state record.
Filing record
- 2026 application
- FL18399-R4, Approved (Revision) · state record
- 2023 code approval
- FL18399-R3, Approved · state record
- Submitted
- Jul 31, 2026
- Validated
- Aug 3, 2026
- Pending FBC approval
- Aug 4, 2026
- Approved
- Oct 13, 2026
- Approved for HVHZ
- No
- Impact resistant
- No
- Compliance method
- Evaluation Report from a Florida Registered Architect or a Licensed Florida Professional Engineer
- Quality assurance
- UL LLC
- Validated by
- Steven M. Urich, PE
Products under this number (1)
| # | Model / description | HVHZ | Impact |
|---|---|---|---|
| 18399.1 | PermaBase Cement Board Exterior backer board for use with tile, marble stone, thin brick, Portland cement stucco, synthetic stucco, and manufactured stones. | No | N/A |
Standards cited
ANSI A118.1 2019; ANSI A118.4 2019; ASTM C 473 2019; ASTM E 330 2014; ASTM E 84 2024
Verify FL18399 on floridabuilding.org before you rely on it for a permit. Spot an error? info@flapprovalwatch.com
Other National Gypsum Company a dba of National Gypsum Services Company numbers
- FL17840 ReadyRoofing Insulation
- FL18389 ReadyStructural Wall
- FL39860 Not yetExterior Insulation Finish System
All National Gypsum Company a dba of National Gypsum Services Company FL numbers
Get the weekly list
New Florida approvals and filings, once a week. Unsubscribe any time.