Building or renovating? Grab a roll of 3M Sealing Tape 8777—it's the pro's choice for sealing window and door openings against moisture and air intrusion. This 4-inch wide by 75-foot long tape comes with a split liner for easy handling. Made with a thin but tough proprietary backing and a high-tack acrylic adhesive that sticks aggressively, even in temps from 0°F to 120°F. It's translucent, 9.9 mils thick, and conforms to uneven surfaces. Key features: self-seals around nails, resists UV exposure for up to 6 months, and provides a durable barrier against water and drafts. Perfect for weatherizing, sealing seams, or flashing installations in residential and commercial projects. Tear-resistant and easy to apply—just peel, press, and smooth. Helps improve energy efficiency and prevent leaks. Use it around window frames, door jambs, sheathing joints, or any spot where you need a reliable seal. Works on wood, vinyl, metal, and most clean, dry surfaces. Trust 3M's quality for long-lasting protection. One roll covers plenty of linear feet. Make your build tighter and more resilient with this essential tape.
