3M Extreme Sealing Tape 4411W+, 50 mm x 33 m, White, Acrylic Adhesive on TPO Backing, 1 Roll

For contractors sealing building joints, repairing roofing membranes, or bonding dissimilar materials outdoors, the 3M Extreme Sealing Tape 4411W+ provides a watertight, UV-resistant seal without drying time. Its white TPO backing with pressure-sensitive acrylic adhesive conforms to irregular surfaces, creating an instant barrier against moisture and air infiltration on metals, plastics, glass, wood, and concrete.

Key specifications

• Tape width: 50 mm
• Tape length: 33 m
• Colour: White
• Adhesive type: Pressure sensitive acrylic
• Backing material: TPO (thermoplastic polyolefin)
• Total thickness: 1.1 mm
• Continuous temperature resistance: -40°C to 90°C
• Short-term temperature resistance: up to 120°C
• UV resistance: Excellent
• Water resistance: Watertight, instant seal
• Chemical resistance: Good
• Paintable: Yes
• Suitable for outdoor use: Yes
• Quantity per pack: 1 roll

Why choose it

This tape replaces mechanical fasteners and liquid sealants in many applications, offering a clean, flexible, and durable bond. It remains conformable over contours and expansion joints, and its white finish can be painted to match surrounding surfaces. The tape withstands harsh weather, UV exposure, and temperature fluctuations without cracking or peeling.

Ideal use cases

• Sealing roof penetrations, vents, and skylights
• Repairing tears in roofing membranes and gutters
• Bonding dissimilar materials like metal to plastic or glass to wood
• Gasketing and vibration damping in HVAC and automotive
• Waterproofing joints in trailers, RVs, and marine applications

Good to know

The tape applies at temperatures above 0°C and reaches full bond strength within 24 hours. For best results, clean and dry surfaces before application. Store in a cool, dry place away from direct sunlight.