CertainTeed's high-performance starter shingles are an essential part of any roofing system. The Starter Shingles are designed for use with Belmont, Grand Manor or Highland Slate (18" x 36") shingles. These shingles are designed to provide a secure and stable foundation for your roof, ensuring that it remains in place and well-protected against the elements. The high-performance starter shingles feature a self-sealing adhesive strip, which helps to prevent wind uplift and protect your roof from water damage. This adhesive strip is activated by the sun's heat, ensuring that it provides a strong and reliable seal. These shingles are made from a high-quality asphalt, which provides excellent durability and weather resistance. The shingles' design allows for easy installation, with pre-cut perforations that help to ensure a seamless and professional look. The high-performance starter shingles come in a standard size of 13.25" x 39.375", making them com...See Morepatible with a wide range of roofing systems. They are also available in a variety of colors to match your roofing system and enhance your home's curb appeal. Overall, CertainTeed's high-performance starter shingles are an excellent choice for homeowners looking for a reliable and durable foundation for their roofing system. With their self-sealing adhesive strip, and high-quality asphalt. See Less