We have been working with drywall for decades, but what sets The Raynor Co. Group apart from other drywall contractors is our immense attention to detail and our ability to recreate historically accurate renovations using newer materials. We also specialize in plaster repair for historical remodeling. Exterior insulation and finishing system (EIFS) is an exterior wall cladding system that provides exterior walls with an insulated finished surface and waterproofing in an integrated composite material system.