FlintFast® FM-90 Base Sheet Fastener is for base sheet attachment to lightweight insulating concrete and various gypsum roof decks.

Fastener: Precision formed from polymer coated steel to prevent corrosion. Rectangular dual gripping legs, 1.7" long.

Disk: Precision formed from coated steel to prevent corrosion. Integrally locked to fastener. Rib reinforced cap, 2.7" diameter.

Technical Information

Approvals: FM-90 fasteners maintain Factory Mutual, Underwriters Lab and Miami-Dade County approvals.

Fastening Pattern: Consult Factory Mutual, Underwriters Lab, or Miami-Dade requirements for recommended pattern in normal, exposed, and hurricane areas.

Field Testing: On-site withdrawal testing should always be performed to evaluate the ability of the roofing substrate to satisfactorily accept and retain fasteners. Such testing may alter fastener selection and modify applicable fastening patterns.


Equipment: Always use the Magnetic Driver to assure proper fastener installation.

See technical data sheet for detailed installation instructions.

For Construction Details and Specs Click Here

Warranty Details

CertainTeed offers three asphaltic low-slope roof system warranty options: Limited Warranty on Materials, Integrity Roof System Limited Warranty on Systems.

CertainTeed warranty durations are based on a combination of system specification and product selection. Please download an overview of these warranty options for details. Consult with your contractor or CertainTeed Territory Manager to determine which warranty is best for your project.     

CertainTeed offers standard asphaltic low-slope roof system warranty durations between ten and twenty-five years. Additionally, Gold Star Contractors can increase warranty durations by 25% by engaging in an Integrity Maintenance Agreement with their client. 

When FlintFast Fasteners are utilized as a component of an installation of a CertainTeed asphaltic low-slope roof system, attachments made with FlintFast fasteners assume the warranty duration and coverage of the overall roof system, up to 20 years. Please download an overview of these warranty options for details.

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