Polyken 627 Shadowlastic Plus Window and Door Flashing Tape is designed to perform in a variety of flashing and weatherproofing applications including window and door installations, corner board abutments, and sealing other detail areas against water and air penetration.  It is also used in sidewall sheathing seams and deck-to-wall joints and has an excellent bond to a variety of building materials including plywood, OSB, housewrap, concrete, and most metals.

This tape features a woven polyethylene backing which is conformable, durable, and suitable for up to 3 years of outdoor UV exposure.

Polyken 627 Shadowlastic Plus provides a permanent weather-tight seal on most clean, dry building surfaces and is compatible with sealants and caulking. The paper release liner is easy to remove making for a quicker installation.