Nail Fin Options

New Construction Nail Fin Window

• Nail Fin: A flat vinyl flange around the outside edge of the window frame with nail hole openings.
• Installation: Nailed directly to the exposed wall studs.
• Purpose: Secures the window and integrates with house wrap and flashing for a watertight seal.
• Hidden After Install: Covered by siding once the exterior is finished.

Remove Nail Fin Only

• Nail Fin will be cut off on all sides.
• Installation: Old window and surrounding materials are removed to expose the rough opening.
• Purpose: Allows full-frame replacement with proper sealing and fastening

Full Retrofit Replacement (Insert Window)

• Nailing Fin is removed, appropriate holes drilled and plugs, screws, and sill angle are provided.
• Installation: New window is inserted into the existing frame.
• Purpose: Avoids disturbing exterior finishes; secured with screws.