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.
1 Liquid roofing is rolled onto a clean and prepared rooftop with a paint roller at a cost of about $600-$900 for a single-wide mobile home or $1,400-$1,800 for a double-wide unit and is designed to last about 10 years.2  The liquid rubber must be installed on a mild, dry day and allowed to dry for several hours. If polystyrene insulation is to be used under rubber membrane, expect to pay an extra $500-$700 for a single-wide mobile home or $1,400-$1,800 for a double-wide unit, depending on size. 2  DIYers will need a variety of tools for the different roofing projects.