1) In general, an intermediary is a person or service that is involved as a third party between two or more end points in a communication or transaction.n the World Wide Web, the role of an intermediary is sometimes said to be no longer necessary as, for example, when you look up legal or medical information directly yourself or when you share files with other Internet users directly (see peer-to-peer).
A roof covers a building or home structure, protecting any belongings found within. There are a large number of materials that can be used to roof a building or home, including several types of metal roofing materials. These materials include steel, aluminum, copper and tin.
Depending on budget constraints and the shape and slope of roof that needs to be worked on, options vary. One type of roofing material commonly used is roll roofing. Roll roofing works like traditional shingle-clad roofing to protect the underlayment of the roof's structure. There are many reasons why contractors choose roll roofing.