Composite corner trims are essential for achieving a clean, professional finish in your composite decking or cladding projects.
Designed to conceal exposed edges and protect against debris and insects, these trims are easy to install and offer a polished, durable result.
Here's a step-by-step guide to installing composite corner trims:
Tools You May Need For The Project
- Composite Corner Trims (ours are 2.2m long)
- CT1 Adhesive (optional)
- 50mm SPEEDDEKZ Decking Screws
- Drill with a countersink bit
- Mitre saw or hand saw
- Measuring tape
- Safety equipment (gloves, safety glasses)
Grey corner trims supplied by Trade Warehouse for a project in Kent
Installation Steps
Step 1: Measure and Cut the Trims
- Measure the corner area to determine the required length of the corner trim.
- Cut the trim to size using a mitre saw for clean, precise edges.
- If connecting trims at wall edges, cut the ends at a 45-degree angle to create a neat mitred joint.
Step 2: Position the Trim
- Place the corner trim over the exposed edge of the decking or cladding to check the fit.
- Ensure it aligns neatly with adjacent trims or boards.
Step 3: Secure with Screws or Adhesive
- For Screws: Pre-drill and countersink holes 13mm from the edge of the trim, spaced every 300mm. Use A2/A4 stainless steel screws for durability.
- For Adhesive: Apply CT1 adhesive along the trim, being careful to avoid getting adhesive on the decking or cladding surface.
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Combination: Alternate screws and adhesive every 150mm for optimal security.
Step 4: Allow for Expansion
- Leave an 8mm expansion gap between trims and adjacent boards to account for natural material movement.
Tips for a High-End Finish
- For visible screws, use coloured screws or screw caps to match the trim colour, available from local builders' merchants or shops like Screwfix.
- For composite decking projects, Pair your corner trims with matching fascia boards and composite bullnose boards to achieve a polished look.
- Use composite materials that match your decking or cladding for the best visual result!
Another customer using the 2.2m composite corner trim on their garden room project. Contact us for a quote: info@tradewarehouse.co.uk.
Why Use Composite Corner Trims?
- Protect Edges: Conceals and protects edges from debris and insects.
- Neat Finish: Creates a professional, polished look for corners, doors, and window frames.
- It's a match: Made from the same high-quality composite as decking and cladding boards.
By following these steps, you can easily install composite corner trims and elevate the look of your project with minimal effort and maximum impact. If you're wondering how much your composite project will cost, consider reading our other guide on how expensive is composite cladding.
