Q: What’s the easiest way to measure the slope of a roof? A: A carpenter’s square (L-shaped) is probably the simplest tool to measure roof slope, which is also referred to as the roof’s “pitch”. Hold ...

Three insurance giants teamed up to invest in Hover, a startup that uses a 3D-imaging cell-phone app to speed up and reduce the cost of roof repairs. Travelers Insurance, State Farm Ventures and ...