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Solar Auxiliary Drainage Gutter | BIPV Transverse Secondary Gutter for Solar Carports & Sunrooms

Solar Auxiliary Drainage Gutter, also known as a secondary solar gutter or transverse BIPV gutter, is designed to collect and guide rainwater beneath photovoltaic modules.

Installed horizontally across the PV array, it collects water from module edges and directs it toward the main gutter, creating a practical secondary drainage route for solar carports, BIPV sunrooms and photovoltaic canopies.

Available in Zn-Al-Mg coated steel and aluminum alloy, with customized profiles and lengths for different PV drainage systems.

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    Product Introduction

    Efficient Water Collection

    The optimized gutter profile provides a smooth drainage path for rainwater and helps reduce water accumulation and overflow during heavy rainfall.

    Corrosion-Resistant Materials

    Zn-Al-Mg coated steel and aluminum alloy options are available for different outdoor environments, including coastal and industrial applications.

    Reliable Connection Design

    Overlapping joints and expansion allowances can be designed to accommodate thermal movement and help reduce leakage risks at gutter connections.

    Easy Integration with PV Systems

    The transverse gutter can be customized to match PV module dimensions and mounting structures, reducing on-site modification and installation work.

    Works with Main Solar Gutter

    The auxiliary gutter collects water horizontally and transfers it to the main gutter, forming a complete drainage path for BIPV and solar carport systems.

    Aluminum solar secondary gutter raw profile for BIPV carport

    Product Parameters

    Parameter

    Specification

    Product Name

    Solar Auxiliary Drainage Gutter

    Alternative Name

    Secondary Solar Gutter / Transverse BIPV Gutter

    Material

    Zn-Al-Mg coated steel / Al6005-T5 aluminum

    Thickness

    0.6–1.0 mm or customized

    Standard Length

    2 m / 3 m / 6 m

    Surface Treatment

    Zn-Al-Mg coating / anodized

    Installation

    Horizontal, beneath PV modules

    Function

    Secondary rainwater collection and drainage

    Customization

    Profile, thickness, length and finish
    BIPV transverse auxiliary gutter installed under solar panel frame

    Applications

    • Integrated Panel Support & Drainage
      Supports adjacent PV panels while collecting rainwater from panel joints.
    • Designed for BIPV Waterproofing
      Helps form a continuous drainage path within the photovoltaic roof structure.
    • Efficient Rainwater Guidance
      Dual drainage channels guide water toward the main gutter and outlet system.
    • Cleaner Roof Integration
      Fits between PV panels without requiring a conventional external gutter structure.
    • Project-Based Customization
      Profile size, thickness, length and surface treatment can be adjusted to project requirements.
    • Suitable for Different PV Structures
      Can be used for BIPV roofs, solar carports and photovoltaic canopy applications.

    Why Choose Our Solar Auxiliary Drainage Gutter?

    • Project-specific profiles— Customized according to PV module and mounting dimensions.
    • Two material options— Zn-Al-Mg coated steel or aluminum alloy.
    • Cut-to-length service— Available for different installation layouts.
    • BIPV system compatibility— Can be matched with main gutters and drainage accessories.
    • Suitable for bulk procurement— Designed for EPC contractors, solar installers and PV system integrators.
    BIPV drainage system schematic, auxiliary transverse gutter & main gutter

    FAQs

    • What is a solar auxiliary drainage gutter?

    • What is the difference between an auxiliary gutter and a main gutter?

    • Is it suitable for coastal projects?

    • Can the profile be customized?

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