Butyl Tape Protecto Wrap BT20 - 12" x 50' Roll

BT20XL Butyl is a cold-applied, self-adhering membrane designed for durable weatherproofing and insulation in a variety of construction and industrial applications. It features a tough, cross-laminated High Density Polyethylene film coated on one side with a proprietary, flexible recycled butyl adhesive that is sticky and long-lasting, providing a reliable seal around fasteners and joints.

This membrane is safe for use on all window and door nailing flanges and offers a 120-day UV exposure rating for outdoor durability. The fully adhered system forms a positive air and vapor barrier, ensuring weatherproof and energy-efficient insulation for both residential and commercial projects.

Features & Benefits

• Proprietary recycled butyl adhesive for superior stick and flexibility
• Compatible with most construction sealants and surfaces
• Recommended for high altitude, high temperature, or highly conductive metal cladding (copper, Cor-Ten, zinc)
• Durable and flexible for long-lasting performance
• Seals around fasteners to prevent leaks
• Forms a positive air and vapor barrier
• Ideal for DIY, industrial, automotive, plumbing, and electrical applications where reliable sealing is required

Applications

• Complete waterproof self-adhered flashing for window and door installations
• Safe for wood, wood-clad, aluminum, fiberglass, and vinyl windows and doors
• Sealing joints in exterior sheathing
• Air and vapor barrier for insulation and weatherproofing

Packaging

• Roll Widths: 4", 6", 9", 12"
• Roll Length: 50 feet

BT20XL Butyl delivers a flexible, durable, and sticky rubber-based solution for professional and DIY weatherproofing, insulation, and sealing across industrial, automotive, plumbing, and electrical applications.