Coated Felt Sheet An asphalt-saturated felt that has also been coated on both sides with harder, more viscous “coating” asphalt; or a glass fiber felt that has been simultaneously filled and coated with asphalt on both sides. Related Articles: Glossary: 15lb [15lb.,15 lb., 15-pound]Glossary: 30lb [30lb.,30 lb., 30-pound]Glossary: 45lb [45lb.,45 lb., 45-pound]Glossary: 90lb [90lb.,90 lb., 90-pound]Glossary: Asphalt Felt