FlintFast® Twin Loc-Nail Base Sheet Fastener is for fastening base sheet, recovery board and insulation to lightweight insulating concrete, structural wood fiber and poured gypsum. Factory pre-assembled components consisting of:

Tube: Precision formed from coated steel to prevent corrosion. The tube is shaped to easily penetrate decking and existing membranes.

Disk: Precision formed from coated steel to prevent corrosion, 2.7" diameter. Securely clamped to tube and rib reinforced to resist cupping.

Locking Staple: Precision formed from stainless steel wire.

Technical Information

Approvals: Twin Loc-Nails maintain Factory Mutual and Miami-Dade County Approvals

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

Field Testing: On-site withdrawal testing should always be performed to evaluate the stability of the roofing substrate to satisfactorily accept and retain fasteners. Such testing may alter fastener selection and modify applicable fasting patterns. The Twin Loc-Nail should always be embedded into the structural roof deck to te depth of t least 1".


Equipment: Always use a Twin Loc Driver. Consult CertainTeed for the specific driver for your application.

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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