3-Tab Shingles are the original and the most basic of roofing shingles available in the industry. 3-Tab Shingles are denoted by the fact that they are single layered roofing shingles that are generally designed to look like slate. 3-Tab Shingles have a very flat appearance on the roof line and are typically the lightest weight roofing shingles available in the market. 3-Tab Shingles used to be the predominant roofing shingle available and used in the market. Today, however, with significant advances in technology and consumer sophistication, 3-Tab Shingles are used primarily by home builders manufacturing economy priced homes or purchased by homeowners as replacement roofing shingles for homes that already have 3-Tab Shingles on the roof.