2mm Aluminium Fascia – 90° External Corner | Type 1

Mitreing aluminium fascia on site is time consuming, difficult to get right, and leaves exposed cut edges that compromise the powder coat finish. On any building with external corners, whether it is a bay window, a projecting porch, or a change of direction on a commercial roofline, a factory formed corner piece gives a cleaner, faster, more reliable result than anything cut and folded on a scaffold.

The factory formed corner arrives on site powder coated, precisely angled, and ready to butt up against the fascia lengths on either side. The profile, colour and finish match exactly because both the corner and the fascia come from the same workshop. No cutting, no exposed aluminium, no mismatched angles.

Product Overview

The 2mm aluminium fascia 90° external corner from Online Metal Store Ltd is a factory formed corner piece for the Type 1 fascia profile. It connects two Type 1 fascia 3m lengths at an outward facing 90 degree angle, creating a clean, continuous roofline around external corners of the building. Available in the same 14 depth options (150mm to 800mm) as the parent fascia, the corner is custom fabricated at our Chelmsford, Essex workshop and powder coated in any RAL colour.

The depth of the corner must match the depth of the fascia boards it connects. Order the corner in the same RAL colour and the same depth as your Type 1 fascia lengths for a fully matched system. For inward facing corners (where the roofline turns into the building), see the internal corner option in the fascia and soffits collection.

Key Benefits

Factory Formed for a Perfect Angle

The corner is formed at the factory to a precise 90 degree angle with the powder coat finish intact on all visible faces. There are no exposed cut edges, no site welding, and no reliance on sealant to hold the angle together. The result is a crisp, professional detail every time.

Matches the Full Type 1 Fascia System

The corner uses the same Type 1 profile (single bend, square edge face with top return) as the parent fascia lengths. When ordered in the same RAL colour, the join between corner and fascia is virtually invisible.

14 Depth Options

Available in every depth from 150mm to 800mm, matching the full range of Type 1 fascia sizes. The corner depth must match the fascia board depth for a flush connection.

Powder Coated in Any RAL Colour

Every corner is colour matched before dispatch. The same RAL code used on the fascia lengths is applied to the corners, ensuring a consistent finish around the entire roofline.

UK Manufactured with Fast Turnaround

Every corner piece is fabricated at our workshop in Chelmsford, Essex alongside the fascia lengths and other fittings. Ordering all components together keeps the colour batch consistent.

Technical Specifications

Material: 2mm aluminium

Type: 90° external corner, Type 1 profile

Available Depths: 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, 800mm

Finish: Polyester powder coated in any RAL colour

Manufactured: Chelmsford, Essex, United Kingdom

Custom Fabricated: Yes, made to selected size and finish

Price: From £34.90 ex. VAT (£41.88 inc. VAT)

How to Fit an Aluminium Fascia External Corner

Fix the corner piece to the building at the external corner point, securing it to the rafter tails or fascia backing timber with corrosion resistant screws. Butt the Type 1 fascia 3m lengths up against each side of the corner, leaving a 3mm expansion gap at each joint. Cover the joints with colour matched joint covers bonded with low modulus silicone sealant.

Apply a bead of colour coded sealant behind the corner and along the joint line for a weathertight, colour matched connection. Use colour coded fasteners for all visible fixings to maintain a consistent finish.

Where Aluminium Fascia External Corners Are Used

Bay Windows and Projecting Features

Bay windows on Victorian and Edwardian properties, projecting porches, and cantilevered sections all create external corners on the roofline. A factory formed corner piece provides a clean transition that site mitring cannot reliably match.

L-Shaped and T-Shaped Buildings

On buildings with multiple wings, external corners occur wherever the roofline turns outward. On new build housing developments across Chelmsford, Brentwood, Basildon and the South East, multiple external corners per property are typical.

Commercial Rooflines

On commercial units, retail parks and office blocks, the roofline often includes multiple direction changes. Factory formed corners in the same colour as the fascia lengths speed up installation and give a consistent finish on every angle.

Frequently Asked Questions

What is an aluminium fascia corner used for?

A fascia corner connects two fascia board lengths at an angle where the roofline changes direction. This product is a 90 degree external corner, used where the roofline turns outward (for example, at a bay window or a projecting porch). The factory formed angle provides a precise, weathertight connection that site mitring cannot reliably achieve.

Do I need an external or internal fascia corner?

An external corner is for outward facing angles where the building projects towards you. An internal corner is for inward facing angles where the building recesses away from you. Look at where the roofline changes direction: if the corner points towards you, it is external. If it points away from you, it is internal.

What size fascia corner do I need?

The corner depth must match the depth of the fascia boards it connects. If your fascia lengths are 200mm deep, order a 200mm corner. This product is available in the same 14 sizes (150mm to 800mm) as the parent Type 1 fascia.

How do you fit an aluminium fascia corner?

Fix the corner to the rafter tails or backing timber at the external corner point. Butt the fascia lengths up against each side with a 3mm expansion gap. Cover the joints with colour matched joint covers bonded with low modulus silicone. Seal behind the corner with colour coded sealant.

Can the fascia corner be colour matched to my fascia boards?

Yes. The corner is powder coated in any RAL colour. Order it in the same RAL code as your fascia lengths and the finish will match exactly, because both are fabricated and coated in the same workshop.

Part of a Complete Type 1 Fascia System

The external corner is one fitting in a fully colour matched fascia and roofline system. Ordering every component from a single supplier ensures consistent colour, profile and fit. The complete system includes:

• Type 1 Fascia 3m Length – parent fascia board

• Type 1 Fascia 90° External Corner – this product

• Soffit Type 1 Internal Joiner – soffit board connection

• Half Round Gutter 3m – gutter fixed to fascia face

• Fascia Gutter Bracket – mounts gutter to fascia

• Colour Coded Sealant – joint and fixing sealing

• Colour Coded Fasteners – matching screws

Browse the full fascia and soffits collection to see all fascia types, corners, joiners and soffit options. For the wider roofline, the fascia system works alongside aluminium copings, drip trims and the full rainwater goods range.

Standards and Compliance

The powder coat finish is applied in line with BS EN 12206-1 for powder organic coatings on aluminium. Powder coated aluminium fascia and fittings achieve a fire classification of A2-s1,d0 under BS EN 13501-1, making them non-combustible and suitable for buildings of any height. Getting these details right protects the warranty, the building and the people inside it.