SOPRAFIX® #14 MP (Multi Purpose) Insulation Fasteners are designed for the attachment of insulation and membrane to steel (18-22 ga.), wood, and structural concrete.

Product Properties

  • Fastening Substrate Steel, Wood
  • Type Fastener


To meet FM requirements, the fastener must penetrate the steel deck ¾” inch. Minimum penetration is 1” inch into wood, ¾” inch through wood that is less than ¾” inch thick and 1 ¼” inch into concrete. When installing in concrete, pre-drill using a 7/32” inch drill bit and drill pilot hole ½” inch deeper than the required embedment. Install the fastener using a clutch-driven drill motor with a maximum 1500 RPM.


Testing & Approvals

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Northwest Wine Academy – Seattle, Washington

In 2017, the Northwest Wine Academy was in need of a new retrofit roofing project. The retrofit was to take place over the existing metal roof covering 10,735 square feet. To complete the project, SOPREMA’s SENTINEL® P150 HFB Copper Art was selected as the main roofing membrane.

The Westin Savannah Harbor – Savannah, Georgia

The Westin was due for a roof replacement on 17,828 square feet of its property. To complete the project, SOPREMA’s SOPRAISO ™, DUOTACK®, SENTINEL® P-150, and ALSAN® RS 230 Flash were selected. These products allowed for the design to meet FM 1-120 codes and the use of ALSAN RS 230 Flash solved any difficult flashing details which was only one of many reasons
SOPREMA products were selected.