Technical Support and Consulting TECHNICAL SUPPORT & CONSULTING At Henry Frerk Sons, our goal is not only to offer top-notch restoration products, but also to provide high-quality technical support services to our customers. Our Technical Support and Consulting expertise allows us to provide the best advice from the beginning of a project to construction and maintenance. Education and Training Offering a wide range of education and training options, including product certification classes for JAHN Repair Mortars & Eisenwall. Free short courses on historic mortars Specialty Repairs & Coating Applications Assisting in complex JAHN repair, molding and casting projects, or custom KEIM finishing Employing skilled staff to handle specialized portions of a job for you Archival Research Preservation staff with extensive experience performing archival research Supporting customers with research services to help locate any available photographs, drawings, public records, articles, or other information to assist with a restoration project Performing research to document, analyze, and replicate historic mortars Request a Quote Material Testing & Analysis Restoration Products Restoration Services Resources