Sun-Resistant Underlayment. Grace Ice & Water Shield HT provides the same protection against ice dams and wind-driven rain as the company's standard underlayment - but it's made with an adhesive that is unaffected by temperatures as high as 240°F, the maker says. The membrane is also coated with a UV-resistant film that can withstand as many as 120 days in the hot sun and resists oil bleed-through, says Grace. It's sold in 200-square-foot and 225-square-foot rolls for $107 to $117 per roll. Grace Construction Products, 866/333-3726, graceconstruction.com.