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.
A business letter should be single-spaced and, if possible, typed on a computer. Print the letter on only one side of the paper. Fold the letter horizontally into thirds. Mail the letter in a No. 10 security envelope (4 1/8 by 9 Â½). There are several business letter formats, but all of them can be subdivided into two basic groups: the block format and various indented formats. Although the block format is somewhat more common, (perhaps because it is easier), either one is acceptable.