SynTrack is a mechanically attached synthetic roofing underlayment designed for steep slope roofing to provide a lasting secondary layer of protection against wind-driven rain, shingle blow-offs, and damage caused by adverse weather conditions. SynTrack provides a considerable improvement over asphalt saturated felt with its superior strength, durability, and fiber grip walking surface. Gone are the days of blow offs and call backs. SynTrack is lightweight, easy to carry, cool to the touch, and pliable under extreme temperatures. Its wrinkle-free surface does not shrink in high temperatures and will lay flat and straight over longer distances. Its advanced underside non-slip coating keeps the product in place and helps prevent pulls that can cause leaks around fasteners. SynTrack is designed for use under; wood, asphalt, and synthetic shingles, and cedar shakes.