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.
The Costs. The average maximum reported cost of red cedar shingle roofing in the United States is $8.87 per square foot. The average minimum reported cost of red cedar shingle roofing in the United States is $6.80 per square foot.When it comes to cedar roofing, red cedar is certainly the most popular option.he roofing grade can also affect the price, as higher grade shingles are thicker and more durable. As a result, they tend to cost closer to the $8.87 per square foot price rather than the $6.80 per square foot price.