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.
You could choose a standard grade, 24â medium hand-split shake that costs $200 per square (material) or a heavy hand-split, treated 24â shake for $300 per square (material), resulting in a range of about $100 per square for material costs. Here is a case study that describes different cedar roof types in Minneapolis. So your choice of cedar material will affect the final job total for no more than $3,000 (30 sq.. x$100) . There are many cedar shake and shingle material options between these two extremes.