3M 7100016681 Spray Adhesive 78 Ht Polystyrene Foam

Product Description

The 3M 7100016681 is a high-temperature, industrial-grade spray adhesive engineered for bonding polystyrene foam insulation panels and roofing membrane materials. Formulated as Scotch-Weld 78 HT, it delivers a high-strength, heat-resistant bond with a long open time, giving installers adequate working time before the bond sets. The adhesive ships in a pre-pressurized canister that requires no pump, mixing, or special dispensing equipment, making it a practical choice for commercial roofing crews and insulation contractors who need consistent coverage on large surfaces.

This adhesive is suited for commercial and industrial applications where standard-temperature adhesives fall short. Primary uses include polystyrene insulation panel bonding in low-slope roofing assemblies and roofing membrane attachment where elevated ambient or substrate temperatures are present. The long open time is particularly useful for large panel layouts where repositioning may be needed before final bond contact. Insulation contractors, roofing mechanics, and industrial maintenance crews are the typical end users.

Key Features

• High-temperature resistant bond formulation for demanding roofing and insulation environments
• Long open time allows repositioning and alignment before final bond sets
• Pre-pressurized canister delivers a maintenance-free, ready-to-use spray system
• Industrial-grade strength suitable for polystyrene panel bonding and roofing membrane attachment
• No mixing, priming, or external dispensing equipment required

Compatibility

Designed for bonding polystyrene foam insulation panels and various roofing membrane materials in commercial and industrial roofing assemblies.

Installation Notes

Apply in well-ventilated areas per applicable safety data sheet requirements. Substrate surfaces should be clean, dry, and free of dust or loose material before application. Follow local building codes and roofing system manufacturer guidelines for adhesive coverage rates and panel fastening requirements. Do not apply to surfaces that exceed the adhesive rated temperature threshold as stated on the product label.

Technical Specifications

• Weight: 208.6 pounds
• Length: 46.6 inches
• Width: 14.9 inches
• Height: 14.9 inches
• UPC: 00051115315954
• Unit of Measure: Each
• Minimum Order Quantity: 1

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100016681