Roof ventilation is very important to consider when doing a roof replacement. It will save you money and keep you comfortable all year round. Ridgemaster®, Ridgemaster Plus® and Hipmaster®’s patented baffle system works efficiently regardless of wind direction or speed and excels in keeping out weather and insects. Its patented structural ribs make it virtually crush proof. Nailing supports and structural ribs are designed to ensure a smooth straight roofline. Durable copolymer material withstands dents from branches or hammer blows and resists cracking regardless of temperature. Comes with a 40 year limited warranty.