A. Contractors should be certified by the Manufacturer for installation of the Helical Piers in underpinning applications. This requirement is typically required by the Company’s quality assurance program. The homeowner should insist that the manufacturer has in place and can document that a Quality Assurance Program recognized by an independent auditing organization is in effect for all materials and manufacturing process. This QA program not only addresses all manufacturing aspects of the products but also the education and training of the installation contractors to ensure a consistent adherence to installation practices. Names of Certified installation contractors in your area are available from Premium Technical Services (800) 282-7453.