Coated base sheet

A coated base sheet refers to a type of roofing underlayment that has been treated with a layer of coating or adhesive material to improve its performance and durability. The base sheet is typically made from a strong and durable material, such as fiberglass or polyester, and is coated with a layer of asphalt or other adhesive material to enhance its waterproofing capabilities.

Coated base sheets are commonly used in built-up roofing (BUR) systems, as well as other types of roofing systems where a high degree of protection against moisture and weathering is required. The coated layer helps to create a strong and durable bond between the base sheet and the roofing membrane, and provides added protection against leaks and other types of damage.

Proper installation of a coated base sheet is essential for ensuring the effectiveness and longevity of a roofing system. The sheet must be installed securely and with proper overlap to prevent moisture from penetrating the roof. The coating layer must also be installed evenly and with the correct amount of thickness to ensure maximum performance and durability.

Coated base sheets are available in a variety of sizes, thicknesses, and materials to accommodate different types of roofing systems and applications. They can be customized to meet the specific requirements of a particular roofing design, and may be color-matched to the roofing membrane or other components to create a uniform and attractive appearance.