Product Data Sheet

3M™ HoldFast 70 Spray Adhesive is a high-performance industrial spray adhesive engineered for fast, versatile bonding in construction, transportation, HVAC, RV, and manufactured housing applications. This synthetic elastomer adhesive delivers aggressive initial tack, long bonding range, and strong permanent bonds across a wide variety of porous and irregular substrates.

Designed with a unique wide-web lace spray pattern, 3M™ HoldFast 70 provides excellent coverage with low soak-in and minimal overspray, helping maximize adhesive efficiency while maintaining clean application. Its fast-tacking formulation bonds almost immediately while still allowing enough open time for positioning and alignment during assembly and installation.

3M™ HoldFast 70 bonds effectively to polystyrene, drainboard, FRP panels, insulation materials, foams, fabrics, geotextiles, plywood, and waterproofing membranes without damaging sensitive substrates. Its strong holding power and moisture-resistant performance make it ideal for demanding industrial and construction environments where durability and fast installation are critical.

Packaged in portable, pre-pressurized cylinders, the adhesive system is designed for easy, maintenance-free application in both field and production environments. The portable spray system helps reduce downtime while improving productivity on large bonding jobs and construction sites.

Common applications include:

• Insulation attachment
• FRP panel bonding
• HVAC duct and insulation assembly
• RV and specialty vehicle manufacturing
• Waterproofing membrane bonding
• Drainboard and house wrap installation
• Foam and fabric attachment
• Manufactured housing construction