Most roofers like Yancey Home Improvements will be licensed and insured for both roofing and construction. The reason is that if we are replacing a really old roof, there may be some significant dry rot and other damages from leaks. We’ll need to address any rafter replacement and decking coverage replacement. Also, if you have storm damage – maybe a tree falling on your roof, your roofer will need to rebuild the eave, rafters and possible some wall reconstruction no to mention any interior damages.