General liability insurance protects you against the most unexpected accidents that may occur while your roofer is working on your property. That’s why it is important to verify that your roofer has the proper insurance coverage to cover expensive liabilities should an accident occur during the job. Any reputable local Frederick roofer should be able to provide proof of insurance and summarize what accidents their insurance does and does not cover, what can help protect you from hefty costs if something goes awry.