The OMG Polymer GypTec™ is a glass-filled nylon auger fastener with a 1-in. head designed to secure insulation and single-ply membrane to gypsum and cementitious wood fiber (i.e., Insulrock, Permadeck, Tectum®, etc.).
The fastener features a wide buttress thread design for excellent pull-out resistance, and tabs that lock the plate to the head of the fastener. The Polymer GypTec is designed to thread into the substrate but should not penetrate the deck. An internal 1/4-in. square drive (driver bit included) assures fast and easy installation.
The Polymer GypTec is used with 3-in. steel plates for insulation and 2-in. steel plates for membrane attachment. The Polymer GypTec fastener is Factory Mutual approved and available in lengths from 2.5–12 inches.
OMG Polymer GypTec fasteners can be installed into some cementitious wood fiber decks without predrilling. A pilot hole is required for gypsum. Use a 7/16-, 1/2- or 9/16-in. drill bit as determined by pullout test results. Pilot holes must be a minimum of 1/2-in. deeper than embedment. Polymer GypTec fasteners should be installed using a heavy duty variable speed screw gun.
Installation at a low rpm is recommended. Minimum fastener embedment into the deck should be 1 1/2 in. (2 in. recommended). The Polymer GypTec fastener should never penetrate the underside of the deck.
Note: Prior to job bid, contact OMG to perform a pullout test to determine drill bit size and the pullout values. Overdriving the fastener can cause damage to the insulation facer.