Commercial Roofing Summary: Install and repair roofs with the use of commercial roofing systems including BUR, Modified Bitumen, TPO, EPDM, PVC and slope (tile/shingles).Commercial Roofing Requirements:5-10 years of commercial roofing experience. Tecta America Seattle, a commercial roofing contractor, provides a full range of roofing services, including commercial and industrial roofing, re-roofs, leak repairs, preventative maintenance, inspections, and 24/7 service.