The Solar Clamps Aluminum L Foot Adapter Bracket with Hanger Bolt and T Bolt is a versatile and robust solution for securing solar panel mounting rails to various types of roofs, particularly those with wooden rafters or purlins, often covered with tiles or shingles. This comprehensive kit typically includes an L-shaped aluminum bracket (the “L Foot”), a hanger bolt (a dual-threaded screw with wood and machine threads), and a T bolt (for attaching the L foot to the mounting rail). This combination ensures a secure, waterproof attachment that can withstand diverse environmental conditions, making it a foundational component in many rooftop solar installations.

Definition

An Aluminum L Foot Adapter Bracket with Hanger Bolt and T Bolt is a specialized assembly used in solar panel roof mounting systems. The “L Foot” is an aluminum bracket that provides an elevated attachment point. The “Hanger Bolt” anchors the L Foot into the roof’s structural elements (like rafters), penetrating through the roofing material. The “T Bolt” then connects the L Foot to the solar mounting rail. This integrated system creates a strong, durable, and adjustable interface between the solar array and the roof structure, while also accommodating flashing for waterproofing.

Key Features

• L-Foot Bracket: Made from high-strength, corrosion-resistant aluminum alloy, providing the primary connection point.
• Hanger Bolt: A dual-threaded bolt (wood screw threads on one end, machine screw threads on the other) designed to penetrate roofing materials and securely fasten into wooden rafters or purlins.
• T Bolt (or Flange Nut/Rail Bolt): Used to connect the L-Foot bracket to the solar mounting rail, allowing for flexible positioning.
• Adjustability: The T bolt often allows for some lateral adjustment of the mounting rail relative to the L-foot.
• Waterproofing Solution: Typically used in conjunction with flashing (rubber or metal) to ensure a watertight seal around the roof penetration point of the hanger bolt.
• Versatile Application: Suitable for shingle roofs, tile roofs, and sometimes metal roofs, depending on the specific design.
• Durable Materials: Components are generally made from aluminum alloy (L-foot) and stainless steel (hanger bolt, T bolt, nuts) for maximum weather resistance and longevity.

Applications

• Asphalt Shingle Roofs: A very common solution for attaching solar panels to residential and commercial buildings with asphalt shingles.
• Tile Roofs: Used to bypass or replace individual tiles, allowing for direct attachment to the roof structure beneath, with appropriate flashing.
• Wood Framed Roofs: Ideal for roofs with wooden rafters or decking that can provide a secure anchor for the hanger bolts.
• Elevated Rail Systems: Provides the necessary height and attachment points for mounting rails, ensuring proper clearance for ventilation and wiring.
• Residential and Commercial Solar Installations: Widely employed in both small-scale home systems and larger commercial projects.

Advantages

• Strong and Secure Connection: The hanger bolt drives deeply into structural members, providing a very robust anchor for the solar array.
• Versatility: Adaptable to a wide array of roof types, making it a highly flexible mounting solution.
• Waterproof Integrity: When installed correctly with flashing, it effectively prevents water ingress at penetration points, protecting the roof.
• Corrosion Resistance: High-quality aluminum and stainless steel components ensure excellent resistance to rust and environmental degradation.
• Ease of Installation: Designed for straightforward assembly and installation, streamlining the solar mounting process.
• System Longevity: Durable materials contribute to the long-term stability and performance of the solar mounting system, matching the lifespan of solar panels.