On warm days, self-adhere underlayment will stick to clear decking with no fasteners. Fasten it on the roof with staples or nails on colder days, but only fasten the highest Component of the underlayment until finally you go back and peel off the bottom 50 percent on the plastic backing http://roofing42086.fireblogz.com/27599347/not-known-factual-statements-about-roofing