Frequently Asked Questions about Products & Projects

Not all roof types are suitable for solar mounts. Installation feasibility depends on roof material, structural load capacity, age and waterproof condition. 1. Metal sheet roof (standing seam / trapezoidal metal roof) Widely used for commercial PV projects. Non-penetrating clamps are commonly adopted, with minimal damage to roof waterproofing. Need to check roof sheet thickness and bearing capacity. 2. Concrete flat roof Available. Ballasted solar mounts or penetrating bolted solutions can be used. Roof load test and waterproof reinforcement are required. 3. Tile roof (clay tile / concrete tile) Feasible with roof hooks. Tiles must be intact, and the underlying roof structure should have sufficient load capacity. Avoid fragile old tiles. 4. Asbestos roof / aging damaged roof****Not recommended. Such roofs are fragile, with poor load-bearing and waterproof performance. Renovation is required before PV installation. 5. Wood roof Only applicable after strict structural assessment. Wood structures usually have limited load capacity and require anti-corrosion and fireproof treatment. Key pre-check items: roof structural safety, remaining service life, waterproof integrity, and local wind/snow load standards.

1. Main material selection - Aluminum alloy (6063-T5): Lightweight, good corrosion resistance. Widely used for rooftop solar mounts. Suitable for inland and lightly corrosive environments. - Hot-dip galvanized carbon steel: High structural strength and lower cost. Ideal for ground stations, solar carports and heavy-load projects. Recommended for heavy snow or high wind areas. - Stainless steel (304 / 316): Excellent anti-corrosion performance. Mainly used for coastal, salt-fog and high-corrosion zones, often for fasteners and connectors. 2. Surface treatment options - Hot-dip galvanizing: For carbon steel. Thick zinc layer, long service life, suitable for outdoor ground projects. - Anodizing: For aluminum alloy. Anti-oxidation and scratch-resistant, stable in normal atmospheric environments. - Zinc-aluminum-magnesium coating: Superior corrosion resistance than ordinary galvanizing, good for coastal and humid areas. - Powder coating: Decorative and anti-corrosive, less common for main structural components of solar supports. 3. Core selection principles - Match material and coating with site environment: coastal salt spray, industrial pollution, rainfall and snowfall must be considered. - Meet local structural codes and design service life requirements (usually 25 years for PV projects). - Balance structural performance, corrosion resistance and total project cost. - Fasteners should be matched with main materials to avoid galvanic corrosion.