Not having enough of these protective substances can cause stones. Changes in the Acidity of the Urine. Changes in the acid balance of the urine can affect stone formation. 1  Uric acid and cystine stones mainly form in acidic urine.
1 For an average sized 1,500 square foot roof, that works out to a total PVC roofing cost of $6,000 to $18,000. 2  While certain types of PVC roofing material can be installed over the existing roof, the old roof may need to be removed and disposed of at an additional cost of $1.00 to $2.00 per square foot. While certain types of PVC roofing material can be installed over the existing roof, the old roof may need to be removed and disposed of at an additional cost of $1.00 to $2.00 per square foot.
Metal Roofing: $750 - $1,000 per square; Metal Tile Roofing: $300 - $1,000 per square; Modified Bitumen Roofing: $273 - $521 per square (only for flat roofs) Red Cedar Shingle Roofing: $600 - $900 per square; Rolled Roofing: $130 per square; Roofing Felt: $39 - $58 per square; Rubber Roofing: $250 - $400 per square; Slate Shingle Roofing: $189 - $272 per square; Soffits: $104 - $230 per square; Soffit Repairs: $18 - $30 per linear foot; Standing Seam Copper Roofing: $100 - $200 per square ...