BT20XL Butyl

BT20XL Butyl™ is a cold applied self-adhering membrane composed of a tough cross laminated High Density Polyethylene film coated on one side with a layer of our proprietary recycled butyl adhesive.



– Proprietary recycled butyl adhesive

– Safe for use on all window and door products

– 120 Day UV exposure rating

– Fully adhered system

– Seals around properly installed fasteners

– Recommended for High Altitude, High Temperature and/or Highly Conductive Metal Cladding/Flashing (Copper, Cor-Ten, Zinc) applications

– Compatible with most construction sealants and will adhere to most construction surfaces¹

– Forms a positive air/vapor barrier²

Click on link below to download sheet.