... life span: more than 25 year Competitive price steel profile Detailed Specification: thickness0.18~1.2(mm)Raw ... blue, Deep red, Gray, TephrosiousGuarantee Period15~20 yearsCharacterLight in weight, heat insulation, water resistant, green and environmentalUsevarious roofs ... extreme weather conditions. It can be installed over existing roofing, eliminating tear off costs, mess and disposal problems. ...