The Hydroshield synthetic roofing underlayments are pre-printed with a nailing pattern and overlap lines to help make for quick installations, and it is tear-resistant making for the ideal choice for your roof. The Hydroshield LT, with a limited lifetime warranty, is an underlayment which is composed of a woven synthetic material that gives it high strength, and it has a double-sided slip-resistant walking surface, giving roofers extra grip and added safety. The Hydroshield 50 underlayment, with a 50 year warranty, is a 100% synthetic woven material with a cool grey spunbond non-woven fabric surface. HydroShield 50 compares to products like Titaunium UDL 50 Synthetic Underlayment and FT Synthetics Hydra, but at a much better price point. The Hydroshield 25 underlayment, with a 25 year warranty, is a 100% synthetic woven material with a cool grey spunbond non-woven walking surface, and it is UV resistant. HydroShield 25 compares to products like Titaunium UDL 25 Synthetic Underlayment and FT Synthetics Hydra, but like the HydroShield 50, at a much better price point. Both the HydroShield 25 and 50 have a non-woven backing made of Aqua Trak and coated with a tacky, back-side, slip-resistant coating for additional walking traction and installation safety.