Tear-resistant SynShield synthetic roof underlayment can be left uncovered for up to six months, the maker says. It is UV-resistant and comes in rolls 48 inches wide and 250 feet long. Each roll weighs 33 pounds, which is 40 percent lighter than a felt roll, the maker says. SynShield passes Miami-Dade County (Fla.) building-code requirements and has a 30-year limited warranty. 800-346-7655. www.benjaminobdyke.com.

Learn more about markets featured in this article: Miami, FL.