A company normally sells its product for $20 per unit. However, the selling price has fallen to $15 per unit. This company's current inventory consists of 200 units purchased at $16 per unit. Replacement cost has now fallen to $13 per unit.
Install Roof Shingles Cost. Typical cost to have roofing shingles installed in San Antonio, TX is around $80 - $100 (per square, asphalt). Roof Replacement Cost. Typical cost to have roofing replaced in San Antonio, TX is around $5,760 (24'x45').
New Roof. Raising the pitch of a roof often requires not only tresses but new supports, new roofing and, in the end, a full replacement of the rooftop itself. According to Costhelper.com, a typical new shingle roof can cost between $1,700 and $8,400 to have built.Do-it-yourself options are not available for raising a pitch because of the technical work involved, which will add onto the cost.resses can be manufactured at a factory and shipped to a house, which lowers the cost of adding tresses to a flat roof. Overall costs may be as low as $1 per square foot for the tresses, allowing for 450 feet of new space for under $5,000, not including the new roofing materials.