SPECIALIZING IN CLASS A SYSTEMS. Our installation crews are courteous and respectful of you and your property. They are efficient and well organized. All are trained on the installation of a class ?A? system which we specialize in. They are eager to please and take pride in their workmanship. Safety training and equipment is required and supplied for all personnel on every site. Dynamic Roofing is a member of the Better Business Bureau (BBB) and the St. Catharines/Thorold Chamber of Commerce. We are WISB compliant and our certificate copies are available. We are also fully covered with comprehensive liability insurance $2,000,000. more... See more text