specifications. If your vehicle was originally charged with R12 refrigerant, for example, the oil type specified, 'mineral', will not apply. Additionally, General Motors issues Bulletin # 02-01-39-004B replacing PAG 150 oil with a lower viscocity oil.
The term square in reference to roofing materials refers to 100 square feet of roof area. One square of slate is the amount of slate that it takes to cover 100 square feet of roof area. A 10 foot x 10 foot section of roof would equal one square. So would a 4 foot x 25 foot section. Ditto for a 5 foot x 20 foot.
For the purpose of this discussion we will explore the costs and materials needed for the installation of a tin roof on the average home. Generally, the current size of the average home is roughly 24'x45' and contains two stories. This translates to 2200 square feet of living space, and around 1500 square feet of roofing.