The Solar Roof Hook provided by Guojian Manufacturer can be installed without penetrating the waterproof layer, thus avoiding the risk of roof leakage at its source. Combined with our dedicated C-shaped groove guide rails, the system achieves lightweight and safe and reliable installation. With our own roof accessory stamping production line and complete "three system" certifications, we have extensive experience in distributed rooftop photovoltaic fields and provide services for industrial and residential projects across the country.
Guojian hooks come standard with thickened EPDM waterproof pads. The fixing points align with the structural roof layer, transferring the load to the underlying purlins or wooden beams; the tiles serve only as a covering and bear no weight, eliminating the risk of leakage through penetration holes. Field tests in rainy coastal areas and southern regions with prolonged rainy seasons (plum rain) have shown no leakage over five years.
We offer multiple product series: adjustable tile hooks fit various curved clay tiles, while color-steel clamps suit trapezoidal or corrugated steel roofs. Custom molds can be created based on specific tile types and roof slopes, eliminating the need for on-site grinding or cutting.
Standard galvanized hooks used inland tend to rust and break within 3–5 years. We offer 304 stainless steel for standard roofs and 316 stainless steel specifically for seaside or saline-alkali industrial areas. Our Zinc-Aluminum-Magnesium carbon steel option offers superior cost-performance, featuring a self-healing coating at cut edges and passing 1,000-hour salt spray tests without showing rust spots.
The hook body is made from thickened (2.0–3.0mm) sheet metal and formed via integrated stamping, eliminating weak points caused by joints. It has passed mechanical tests for 60 m/s wind pressure and 1,000 N/m² snow load. Large-scale installations in typhoon-prone southeastern coastal areas and snowy northern industrial facilities have shown no instances of loosening or deformation.
Suitable for self-built rural homes and villas with glazed or cement tile roofs, as well as small-scale (3–10 kW) residential PV systems. The Solar Roof Hook do not add excessive load to the roof, and installation preserves the original appearance of the tiles, making them ideal for village-wide PV retrofit projects.
Distributed PV solutions for trapezoidal and corrugated steel roofs on factories, logistics warehouses, and industrial parks. Options include penetrating hooks and non-penetrating clamps, designed to preserve the integrity of the original roof waterproofing warranty; suitable for large-scale rooftop power plants ranging from hundreds of kilowatts to several megawatts.
PV integration for scenic area buildings with antique-style tiles, flat-to-sloped concrete roof conversions, and sunrooms. Custom low-profile, ultra-thin hooks are used to maintain the building's original aesthetic.
Adjustable stainless steel roof hooks from Guojian were used across all residential glazed-tile roofs, specifically adapted for the curved clay tiles typical of the Lingnan region. No tile breakage occurred during installation, and three years of operation have shown no reports of leaks or corrosion; the project has been promoted as a provincial-level demonstration of PV-integrated architecture.
Customized extended-height roof hooks were used for curved steel factory roofs to distribute point loads; the design passed local typhoon load verification. The system generates an average of 1.3 million kWh annually, with the roof's waterproofing remaining intact and leak-free.
Custom Solar Roof Hook designed for Southeast Asian flat-tile roofs, exported alongside complete mounting profile kits. The project covers over a thousand residential rooftops and is adapted to the local high-temperature, high-rainfall climate.
The hook base must be anchored to roof purlins (wood or steel) or concrete beams. Anchoring solely to tiles or the surface waterproofing layer is prohibited to prevent tile cracking or detachment caused by long-term loads.
Clean away dust after drilling, inject weather-resistant sealant into the hole, and secure the assembly with an EPDM waterproof gasket. After repositioning the tiles, maintain the original drainage slope and ensure roof drainage channels remain unobstructed.
Each PV module is paired with 2–4 roof hooks; hook density must be increased for roof slopes exceeding 25° or in coastal areas subject to high wind loads. Installation must strictly adhere to the load layout drawings provided by us.
1) Qualification Assurance: A full set of certifications—ISO9001 (Quality), ISO14001 (Environmental), and ISO45001 (Occupational Health)—along with a 3A-grade credit enterprise certificate and factory material inspection reports are provided with the shipment to meet tender and bidding requirements.
2) Quality Control Assurance: Four-stage quality inspection—incoming raw material testing, CNC punching dimensional verification, anti-corrosion salt spray sampling, and mechanical load simulation testing. Every product batch is traceable to eliminate dimensional deviations and coating defects.
3) Delivery Assurance: Supply contracts specify clear delivery dates, with penalties applied for delays; 10,000 tons of standard-specification stock are maintained, and urgent projects receive production priority.
4) On-site Technical Support: Engineers can be dispatched to provide on-site installation guidance for large-scale (megawatt-level) domestic projects; for overseas projects, we provide all-English technical documentation and remote video instruction.
5) Long-term O&M Support: For older PV power plants that have been in operation for years, we offer discounted replacement hooks and hardware accessories, as well as technical guidance for roof PV system maintenance and repair.
Address
No. 2, Expressway Auxiliary Road, South Area of High-tech Industrial Park, Zitai Economic and Technological Development Zone, Tianjin, China
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