st. john's regional location: frederick, md roof size: 61,000 square feet owner: archdiocese of baltimore general contractor: oak contracting project description: 12,700 square feet of hot asphalt styrene butadiene sityrene modified bitument membrane roofing. 3,375 square feet aluminum soffit. 1,500 square feet vinyl siding. 48,000 square feet of 30 year shingles.