What is a roofing square? Essentially it is 100 square feet or a 10Ã10â² block. Because roofs, siding and other big projects are â¦ well, big, using a square foot as a unit of measurement gets complicated. Also, roofing and siding are a commodity now days, so even if you are off by a few sq. feet, it is fine. Itâs not marble flooring, where each tile costs $20 + installation, and when you are off by 30 sq. feet, you can be down $1000.
You get up to 3.3 ounces for standard rate mail! First class mail postage cost is calculated by the ounce so be careful to check the weight first. If you are sending flats standard rate, your postage cost will be about 34 cents to 49 cents per piece depending on your list.
Summary of the 2017 Postage Rate Increase: First Class Mail Letters (1 oz.) rates will increase from $0.47 to $0.49 when purchased at the Post Office. Each additional ounce will cost $0.21. The discounted âMetered Mailâ category for First Class Mail Letters (1 oz.), which includes online postage providers and postage meters, will decrease from $0.465 to $0.46. Each additional ounce will cost $0.21. First Class Mail Flats (1 oz.) will increase from $0.94 to $0.98.