| 摘要 |
A method of forming a roofing product can include providing a ceramic base material having an open structure, and filling the open structure of the ceramic base material with a bituminous material. In a particular embodiment, the bituminous material has no greater than approximately 5 weight % of abrasive particles or has a first particle size distribution. The method can further include applying a recycled roofing material. In an embodiment, the recycled roofing material is applied along a principal surface of the ceramic base material or adjacent to the ceramic base material. In a particular embodiment, the recycled roofing material has at least 2 weight % acid-insoluble solids or has a second particle size distribution that is narrower than the first particle size distribution. |
