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.
Most roofing contractors give their materials cost in terms of 10 ft. x 10 ft. squares (100 square feet). As you will soon see, there are a myriad of choices for your flat or pitched roof. Additionally, there are other materials you have to analyze if youâre replacing your entire roof, such as the fascia and soffits.