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.
Wood and composition shingles are intended for use on pitched roofs. On buildings with flat roofs, shingles should be replaced with a roofing material that provides protection from water intrusion. Installing cold-application rolled asphalt roofing is not complicated. The most labor-intensive part of the job is removing the old shingles.