Composite Decking Calculator

Product Description

The Oxford Heritage 3D™ Wall Cladding L-Trim is a 3000 × 50 × 50 mm composite angle that covers the cut ends of Wall Cladding boards at external corners, window and door reveals and wall ends. Made in the four Wall Cladding colours: Black, Anthracite, Teak and Yellow Cedar.

• £15.00 per length inc. VAT (October 2026)
• 3000 × 50 × 50 mm
• Four colours: Black, Anthracite, Teak, Yellow Cedar
• One 3 m length covers a garden-room corner in one piece

Where it goes

• External corners: the L-trim covers the cut ends on both faces. Fix a batten each side of the corner first.
• Window and door reveals: fix battens around the opening, clad up to it, then cover the cut edges with L-trim.
• Internal corners need no trim — butt the boards and cut the last board to fit.

How many do I need?

Add up the height of each external corner and the perimeter of each window and door reveal. Worked example from Catalogue 02: a garden-room front 3.0 × 2.4 m with a 0.9 × 2.0 m door needs 2 lengths for the two external corners and 2 lengths for the door reveal (2.0 + 2.0 + 0.9 = 4.9 m).

A trim has a different profile and surface from a board, so it catches the light differently — order trims with your boards and check them together in your own light.

Technical specification

Questions

Is this L-trim for decking or cladding?

It is the corner and reveal trim for Oxford Heritage 3D™ Wall Cladding, in the four Wall Cladding colours. For decking in the six Oxford Heritage 3D™ face colours, use the decking L-trim.

Do I need a trim on internal corners?

No. On an internal corner, butt the boards and cut the last board along its length to fit, with a batten each side of the corner.

Should I order trims with the boards?

Yes — order boards and trims together so the whole wall is finished from one delivery.

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