Kirsch Building Products is focused on developing and marketing premium products that provide value and long-term solutions for the roofing industry. The company’s marketing efforts are focused on the pitched roofing market, which consists primarily of concrete/clay, slate, metal and asphalt composition shingles. Today, Kirsch Building Product’s industry proven Sharkskin family of roof underlayments are distributed Nationwide. What Tyvek* is to housewrap, Sharkskin is to roof underlayment