Count on IKO for the best in asphalt products. IKO’s Type 1, 2 and 3 asphalt roofing products are suitable for use with several IKO board stock products, felt and modified membranes for a variety of application methods. Available in bulk liquid, 50 lb. packages and 100 lb kegs, IKO offers a wide variety of asphalt products to meet your roofing needs.