How to Install Corner Trim for Composite Decking

Overview

Corner trim can be used with fascia to cover exposed board sides and substructure. A corner trim is an L-shaped profile that sits on the corner of the deck edge to provide a capping.

Note: Installing corner trim results in visible screws. If you are concerned about visible screws pick up a pack of coloured screws to make them less visible. We offer colour-matched screws for our Hyperion products.

Step 1

Measure and mitre

Measure the required amount of corner trim and cut down to size, mitre down the ends at 45° angles if installing around corners.

Step 2

Place the corner trim

Cover the deck edge with corner trim.

Step 3

Fix the corner trim

Pre-drill 4mm countersunk pilot holes, then fix with 50mm countersunk screws.

Do not overdrive screws when through composite products, finish tightening by hand.
Corner trims should only be screwed into the deck.
It is not recommended to attach the trim using glue.