This roofing material is commonly, but not exclusively, used on flat roofs, such as those found on garden buildings, garages, and additions.

Two or three layers of felt sheet create a dense and impermeable barrier. It is also typically coated with water-resistant substances, such as asphalt, to prevent the entry of moisture. Multiple layers are necessary to ensure that the roof is entirely waterproof.

Ideal for flat roofs and diverse surfaces, Felt roofing is a popular option for sheds, garages, and additions due to its resistance to the elements and suitability for any size project. Extremely adaptable, felt may be applied to any flat, convex, or sloped roof surface.