SJ Company Specializes in Flat Roof and Reconditioning Metal Roof serving Stanislaus, Merced,? San Joaquin, Sacramento, and Calaveras Counties for over 25 years. Other Quality Services include: Cold Process Roofing, Systems and Coating, Roof Maintenance Systems, Fluid Applied Reinforced Roofing, Reflective Coating System and Fluid Applied Roof Restoration systems. Owner Present On All Job Sites.