When considering the cost of roofing materials, many people take into account just the shingle prices. This is incorrect, as a roof made just of roofing shingles will not work. You also need to consider all the accessories that are included in a complete roof system.
Business letters tend to have both the sender and receiver's address and the date at the top of the page and they begin with a polite salutation, such as dear Mr. and Mrs, followed by a blank line before the body or the content of the letter.
Business Letters. A business letter is more formal than a personal letter. It should have a margin of at least one inch on all four edges. It is always written on 8Â½x11 (or metric equivalent) unlined stationery. There are six parts to a business letter.