Aluminium Half Round Gutter – 135° External Corner

Easily route rainwater around wide external angles with a secure, rust-resistant aluminium corner piece.

The Aluminium Half Round Gutter – 135° External Corner is built to manage water flow smoothly around external angles on complex rooflines. Whether used for architectural detailing or wide angled wall projections, this fitting connects two gutter runs at a 135° external angle with precision. Manufactured from high-grade aluminium and finished with a weather-resistant powder coat, it's designed to deliver long-term performance and visual consistency. This fitting integrates perfectly with Online Metal Store's half round gutter range.

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

Choose a variant:

Size

£31.56

excluding shipping cost

Download Colour Chart

Features + Benefits

Connects gutter sections around 135° external angles
Smooth water flow with no leaks or overflows
Powder-coated aluminium for rust and weather protection
Fire-rated A2-s1,d0 for building regulation compliance
Seamless match with half round gutter profiles
Lightweight yet durable for easy handling and longevity
Ideal for new builds and restoration projects
Fully recyclable and made in the UK

Specs & Options

Material: 1050A Grade Aluminium
Finish: Polyester powder-coated (RAL/BS colours available)
Fire Rating: A2-s1,d0
Use Case: External angle joint for half round gutters
Lead Time: 3 to 5 working days
Custom Options: Available upon request

Installation / Usage Instructions

Align the two gutter runs to the 135° external corner fitting. Apply aluminium-compatible sealant at both joints and secure with recommended brackets or clips. Ensure proper fall is maintained for optimal drainage.

Have an angled roofline that needs a clean corner solution?