3M 7100043969 Foil Insulation Tape White 3.89 in X 50 Yd

Product Description

The 3M 7100043969 is a white kraft paper, scrim, and foil laminated tape designed for sealing and vapor control on ductboard and pipe insulation systems. It uses a pressure-sensitive cold weather solvent acrylic adhesive that bonds quickly at normal temperatures and maintains strong adhesion in low-temperature environments. The laminated backing resists puncture and tearing, making it well suited to the demanding conditions found in mechanical insulation work. Licensed insulation contractors and HVAC technicians are the primary installers. The tape ships in rolls measuring 3.89 inches wide by 50 yards long.

This tape is engineered for ASJ (All Service Jacket) facing applications on ductboard and pre-insulated pipe. It performs reliably in high-humidity crawl spaces, cold attic spaces, refrigerated warehouses, and other environments where standard tapes lose tack or fail at seams. The flexible backing conforms to curved duct surfaces and irregular pipe fittings without lifting at the edges. A built-in mold inhibitor helps the adhesive maintain its effectiveness over time in damp or humid conditions. It installs without special tools or applicators, which reduces labor time on site.

Key Features

• Cold weather acrylic adhesive maintains bond at low ambient temperatures
• White kraft, scrim, and foil laminate backing provides an effective vapor seal on ductboard and pipe insulation
• Mold inhibitor preserves adhesive strength in humid or damp environments
• High puncture and tear resistance extends service life in demanding applications
• Flexible backing conforms to curved and irregular surfaces
• No special tools or applicators required for installation

Compatibility

Designed as an OEM-style ASJ facing tape for use on ductboard insulation panels and pre-insulated pipe systems in residential and commercial HVAC and mechanical insulation applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or mechanical insulation contractors. Surfaces should be clean, dry, and free of dust or loose facing material before tape is applied. In cold weather applications, store rolls at room temperature prior to installation to ensure initial tack. No power shutdown is required for tape application alone, but all work on active duct systems should follow applicable OSHA and local safety protocols.