Polyurethane (PUR) adhesive is not commonly used for EPDM garage door thresholds because it may not provide the long-term adhesion and flexibility required for this application. EPDM (Ethylene Propylene Diene Monomer) rubber thresholds are commonly installed to seal gaps between the bottom edge of the door and the floor. For EPDM garage door thresholds, it's generally recommended to use specific adhesives designed for rubber or flexible substrates, such as modified silicone sealants, neoprene-based adhesives, or solvent-based contact adhesives. These adhesives are specially formulated to provide strong bonding and flexibility to accommodate the movement and vibrations experienced by the garage door threshold.
To ensure proper adhesion and long-lasting performance, it's important to refer to the manufacturer's instructions for the specific EPDM garage door threshold you're installing and the recommended type of adhesive. Before applying any adhesive, make sure the threshold and the contact surfaces are clean, dry, and free of any dirt, grease, or debris that could affect adhesion.