Composite Decking L-Corner Trims
Hiding the raw edges where your top composite decking boards meet your vertical fascia is the secret to a professional, high-end installation. Our composite L-corner trims are specifically designed to cap these 90-degree joints, providing a seamless, polished finish to your patio perimeter and step nosings.
Design Flexibility (The Picture Frame Effect): Corner trims aren’t just for hiding joints—they are a fantastic design tool. By mixing and matching colours (for example, pairing a dark Anthracite deck with a striking Light Grey trim), you can create a stunning “picture frame” border that beautifully outlines your outdoor space while providing a clear visual contrast for step safety.
The Tradesman’s Fitting Guide: Installing trims correctly ensures they stay put through the shifting UK seasons. Follow these professional steps for a secure fit:
- The Adhesive Method: Use a premium, high-strength exterior grab adhesive. Crucial tip: Lightly sand the inside of the trim and the surface of the decking where they will meet. This removes the smooth manufacturing finish and gives the glue a rough “key” to bond securely.
- The Weather Warning: Never glue trims down on a scorching hot day. Intense direct heat causes the composite to expand rapidly and forces the adhesive to cure too fast, resulting in a weak, brittle bond that will eventually pop off.
- The Mechanical Fix (Screwing): If a glued trim ever works loose over time, you can easily re-surface and re-glue it. Alternatively, for a permanent mechanical hold, you can secure the trim using colour-matched composite screws. Just remember to always pre-drill an oversized clearance hole first to allow the plastic to expand without cracking!
Key Benefits & Specifications:
- The Perfect Finish: Neatly conceals exposed board edges and subframe joints.
- High Contrast: Ideal for creating modern, two-tone picture frame borders.
- Flexible Fitting: Can be secured using exterior grab adhesive or colour-matched screws.
- Low Maintenance: Manufactured from durable composite that won’t rot, warp, or splinter.
- Easy to Cut: Cuts smoothly with a standard carbide-tipped mitre saw blade for crisp 45-degree corners.
