Aluminium Box Gutter Corner - 135° Internal Gutter Connector

This aluminium box gutter corner is designed to connect two aluminium box gutter runs at a 135° internal angle. It provides a neat internal corner detail for UK roofline projects where the gutter needs to follow an angled return, recessed elevation, extension detail or commercial roof edge.

The product is available in 100mm x 75mm, 125mm x 100mm and 150mm x 100mm size options, with a RAL colour selection available before ordering. These size and finish options are confirmed on the product page.

It can be used as part of a wider rainwater goods system and coordinated with fascia and soffits, aluminium copings, box gutters, downpipes and related accessories.

Key Benefits

• Creates a neat 135° internal corner between two aluminium box gutter runs.

• Helps the gutter system follow angled internal roofline details.

• Available in 100mm x 75mm, 125mm x 100mm and 150mm x 100mm size options.

• Aluminium construction provides a lightweight, corrosion-resistant and low-maintenance rainwater fitting.

• RAL colour options help the corner match gutters, downpipes, fascia, soffits and other exterior aluminium products.

• Suitable for UK residential, commercial, industrial and refurbishment roofline projects.

• Custom-fabricated to the selected size and finish, helping buyers coordinate the corner with the wider rainwater system.

Product Details and Specification

The product page states that this item is custom fabricated to the selected size and finish, and buyers should double-check measurements before ordering.

Where This Product Is Commonly Used

This aluminium box gutter 135° internal corner is commonly used on homes, extensions, commercial buildings, industrial units, offices, schools and refurbishment projects where the roofline includes an internal angled return or recessed corner.

It is especially useful as part of a complete rainwater goods installation, alongside aluminium box gutters, outlets, external corners, brackets, downpipes, bends, shoes and related accessories.

Where the wider exterior finish matters, the selected RAL colour can also be coordinated with fascia and soffits, aluminium copings, cladding, trims and other aluminium architectural details.

Why Aluminium Is a Good Choice

Aluminium is a practical material for gutter corners and rainwater fittings because it is lightweight, strong, long-lasting and highly corrosion resistant. The Council for Aluminium in Building explains that aluminium naturally forms a protective oxide coating, is highly corrosion resistant, and can accept different surface finishes, including powder coating.

For UK roofline projects, these qualities make aluminium suitable for gutter components that are exposed to rain, moisture, wind and changing temperatures. Aluminium does not rust like some ferrous metals, and it can provide a clean exterior finish with low ongoing maintenance when installed correctly.

Finish and Colour Options

This product includes a RAL colour selection option, allowing the aluminium box gutter corner to match or coordinate with the wider roofline and rainwater system. This is useful when matching gutters with downpipes, fascia, soffits, copings, cladding and other exterior details.

For general colour reference, buyers can check official RAL colour information. The official RAL page lists colour shades across RAL Classic, RAL Effect and RAL Design System plus.

Screen colours can vary, so the final RAL colour should always be checked carefully before ordering.

Installation and Ordering Notes

Before ordering this aluminium box gutter 135° internal corner, check the roofline angle, gutter size, gutter run length, outlet position, corner direction, bracket spacing and downpipe route. The correct corner fitting will depend on the internal building angle, gutter profile and wider rainwater system.

You should also confirm any required accessories before ordering, including box gutter lengths, gutter joints, outlets, brackets, downpipes, bends, shoes, colour coded fasteners and sealant. Where the gutter system forms part of a wider drainage design, UK Approved Document H: drainage and waste disposal may be useful for general project guidance.

This product is custom fabricated to the selected size and finish. Please check the size, RAL colour, corner angle and accessory requirements carefully before ordering, as the product page states that custom-fabricated items are non-returnable unless faulty.

Why Buy From Online Metal Store Ltd

Online Metal Store Ltd supplies aluminium architectural products for UK roofline, rainwater and construction projects. The website navigation includes rainwater goods, aluminium copings, fascia and soffits, accessories, metal planters and aluminium door canopy products.

This helps contractors, roofers, builders and homeowners coordinate gutters, corners, downpipes, outlets, brackets, colours and finishing details from one supplier. If you are unsure about gutter size, corner type, colour matching or the correct rainwater accessories for your project, contact Online Metal Store Ltd before placing your order.

FAQ Section

What is an aluminium box gutter 135° internal corner used for?

An aluminium box gutter 135° internal corner is used to connect two box gutter runs around an internal angled return. It helps the rainwater system follow the building line while keeping the gutter connection neat and consistent.

What sizes are available?

This product is available in 100mm x 75mm, 125mm x 100mm and 150mm x 100mm size options. Choose the size that matches your aluminium box gutter and wider rainwater goods system.

Can I choose a RAL colour?

Yes. This aluminium box gutter corner includes a RAL colour selection option, allowing you to match or coordinate it with gutters, downpipes, fascia and soffits, aluminium copings, cladding and other roofline products.

When would I need a 135° internal gutter corner?

A 135° internal gutter corner is useful where the roofline has an internal angled return rather than a standard 90° corner. This can appear on recessed extensions, commercial elevations, architectural roof edges and non-standard building layouts.

Is aluminium suitable for UK rainwater systems?

Yes. Aluminium is widely used for external rainwater products because it is lightweight, long-lasting and highly corrosion resistant. The Council for Aluminium in Building explains that aluminium naturally forms a protective oxide coating and can accept powder coated finishes.

What accessories may I need with this box gutter corner?

You may need aluminium box gutter lengths, gutter joints, outlets, brackets, downpipes, bends, shoes, colour coded fasteners and sealant depending on your roofline layout. You can check related accessories or contact Online Metal Store Ltd before ordering.

What should I check before buying?

Check the gutter size, roofline angle, corner direction, RAL colour, gutter run length, outlet position, bracket requirement and any connecting components. If the corner is part of a wider drainage system, Approved Document H may be useful as a general UK drainage reference.

Is this aluminium box gutter corner returnable?

This product is custom fabricated to the selected size and finish, so it is non-returnable unless faulty. Check the size, measurements, RAL colour and required accessories carefully before placing your order.

Choose the required box gutter size and RAL colour before ordering. If you are unsure about gutter sizing, corner direction, colour matching or the correct rainwater accessories for your project, contact Online Metal Store Ltd for guidance before placing your order.