Does your roof need certain constructions? If it does, you need to consider your safety first when  climbing on top of your roof to work on the job. For your safety, use roof hooks. Roof hooks are used on ladders that go on your roof. Its main purpose is to keep you on the roof while doing necessary constructions up there thus, preventing you from falling off. Of course, you will need to have a ladder  that will be securely attached on the roof through these hooks. Sometimes more than one ladder is used to help people safely move around the roof. They are also instances wherein these are used for keeping tools and supplies securely in place on the roof. Learn more about roof hooks by visiting http://www.roofhook.com.