S-5 They focus on designing attachment solutions to maintain their integrity for more than 50 years. Rest assured that if this objective is not met, we will not sell it. We will never compromise the durability, longevity and weather integrity of a finished solar-roof system. Your chosen mounting method can have a profound effect on the cost of materials, total installation time and labor, material handling, and logistics, freight expense, etc. We consider all of these factors with our diverse product offerings. When it comes to mounting method preferences, S-5! covers all options with the PVKIT, a rail-free (or direct-attach™) solution, along with products for mounting rail-based systems. We also offer solutions for mounting balance of system components.