At TRA Snow and Sun we do not have a certified installer program. Our products are relatively simple to install. Any licensed Roofing/General Contractor is capable of installing our products. It is critical however that the correct number of snow brackets, and the correct positioning of snow fences be installed. We offer free engineering and design to ensure that contractors understand our requirements; these drawings and details make installing relatively simple. The average homeowner can understand our snow retention plans, and we encourage homeowners, architects, general contractors, etc. to look at the plan and ensure that the Roofing Contractor is installing the devices correctly. We will provide a copy of our snow retention layout to anyone involved in the project that would like one. One thing to note, in cases of retro-fit it is wise to contact your original roofing contractor in cases where warrantees are still in place, some roofing contractors do not allow other contractors to work on the roof while a warranty is existing.