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Aluminium Half Round Gutter – 90° Internal Corner

Turn inside corners with smooth, watertight flow using a durable aluminium gutter fitting that won't let water back up.

The Aluminium Half Round Gutter – 90° Internal Corner connects two gutter runs at an internal right-angle, ensuring water flows around corners without pooling or leaking. Built from corrosion-resistant aluminium and finished with long-lasting powder coating, it's the perfect solution for homes and buildings with complex roof shapes. This corner fitting is compatible with the full Online Metal Store half round gutter system and ideal for new installations or retrofit work. 

Please refer to the attached RAL colour chart to view available options. At checkout, enter your chosen RAL colour in the designated box.

£31.56
excluding shipping cost excl. VAT £26.30
In stock
Download Colour Chart

Features + Benefits

  • Connects gutter runs around internal 90° corners

  • Prevents water overflow and stagnation

  • Lightweight and rust-resistant aluminium body

  • Powder-coated for maximum weather protection

  • Fire-rated A2-s1,d0 for safety compliance

  • Seamless integration with half round gutter system

  • Clean appearance for professional finishes

  • Easy to install with standard gutter fittings

  • Suitable for domestic, commercial, and industrial use

  • Made in the UK and fully recyclable

Specs & Options

  • Material: 1050A Grade Aluminium

  • Finish: Polyester powder-coated (available in RAL/BS colours)

  • Fire Rating: A2-s1,d0

  • Use Case: 90° internal gutter angle for half round systems

  • Lead Time: 3 to 5 working days

  • Custom Options: Available upon request

Installation / Usage Instructions

Align both gutter sections into the internal corner piece. Use a bead of aluminium-compatible sealant at each junction. Clip or screw the corner in place and check that water flow direction is maintained.

Need to route rainwater around internal corners? 

This gutter corner keeps everything flowing and sealed tight. Order now or contact Online Metal Store for help with your gutter layout.