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What Is a Corner Cover Trim and Why Do You Need One?

When you’re cladding a building – whether it’s a garden office, barn, shed, or outbuilding – the corners are often the trickiest part to finish tidily. Without a proper corner trim, you’re left with raw, exposed edges that can look unfinished and, over time, let moisture in.

This treated softwood corner cover trim solves that problem simply and affordably. It sits neatly over the corner junction of your cladding boards, hiding any gaps or rough edges and giving the whole project a clean, sharp finish.

Product Details

• Size: 44 x 44mm
• Available lengths: 2.4m and 3.0m
• Material: Softwood, pre-treated for outdoor use
• Suitable for: Any softwood timber clad building – garden offices, sheds, barns, outbuildings, and more

Works With Any Cladding Colour or Finish

This trim isn’t just for one style of cladding – it works with whatever you’re building and whatever finish you choose. Whether you’re going for a popular paint colour or leaving it in the natural colour but want to give it a protective cover, this trim takes paint well and can be finished to match perfectly.

We stock a great range of coatings that work brilliantly on this trim, including:

• Bedec Barn Paint – available in a wide range of colours, ideal for a smart, consistent finish across your cladding and trim
• Osmo UV Protect – a durable, natural-looking finish that lets the wood grain show through
• Impra End Coat – excellent protection for the end grain and cut sections of your trim

Having everything in one place means you can pick up your trim and your finish coat in the same order – saving you time and a separate trip.

Tips for a Professional Finish

• Measure each corner carefully before cutting – it’s always better to cut slightly long and trim back than to cut too short
• Pre-drill your fixings to avoid splitting the trim, especially near the ends
• Pay particular attention to any cut ends or drilled holes – these freshly exposed areas are where moisture can get in and should always be coated before and after fixing.

How Much Do I Need?

Measure the total height of each corner on your building and divide by your chosen length (2.4m or 3.0m). Always add around 10% extra to allow for cuts and waste – it’s much easier to have a little left over than to run short mid-job.

Ordering Online Is the Easiest Way

You’ll always get our best price when you order through the Timberstore website. We deliver across South East England including Buckinghamshire, Berkshire, Oxfordshire, Hertfordshire, Greater London, Surrey, West Sussex, and Hampshire using our own fleet – so you know your timber is in good hands. If you’re outside our delivery area, you’re welcome to click and collect from our yard in Beaconsfield, HP9 2RX at a time that suits you.