Construction crews may someday use a plant molecule called lignin in their asphalt and sealant mixtures to help roads and roofs hold up better under various weather conditions and make them more ...

Chemists show that asphalt binder, when exposed to sun and water, leaches thousands of potentially toxic compounds into the environment. A dramatic oil spill, such as the Deepwater Horizon accident in ...

Q: Tim, I’m beside myself. My expensive asphalt shingles that have a 30-year warranty are less than 10 years old and starting to curl. I see lots of roofs around me doing the same. I never recall ...

New Haven, Conn. -- Asphalt is a near-ubiquitous substance -- it's found in roads, on roofs and in driveways -- but its chemical emissions rarely figure into urban air quality management plans. A new ...

Explore the inner workings of a modern asphalt plant. Discover how raw aggregates are transformed into high-quality asphalt ...

Asphalt baking in the summer sunshine is no fun for tender feet, but a new study suggests it's not doing your lungs any favors either. As it heats up, asphalt releases chemical compounds that ...

Q: Tim, I am upset because my expensive asphalt shingles that have a 30-year warranty are less than 10 years old and are starting to curl. I see a lot of roofs in my neighborhood doing the same. I ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...

Question: I’m beside myself. My expensive asphalt shingles that have a 30-year warranty are less than 10 years old and starting to curl. I see lots of roofs around me doing the same. I never recall ...