Composite decking: grooved or woodgrain side up?

Our composite boards are reversible: one face is grooved, the other is an embossed woodgrain. Both are finished faces and either can go up. Which one you choose changes how the deck looks, how it feels underfoot when wet, how it copes with scratches and how much it needs cleaning. This is the shortest guide we have written, because the answer is simple once you know the trade-offs.

The short answer

Grooved side up for grip, for a deck that gets wet and shaded, for anywhere with children or a pool, and for hiding scratches. Woodgrain side up for looks, for a sunny deck that dries fast, and for the closest impression of timber. Most of our customers put the woodgrain up on the main deck and use the grooved face on steps, ramps and the path to the shed. Neither choice affects the fixing: the clip groove is on the board edge, not the face.

Grooved face up

• Grip. The ridges give traction when the deck is wet or frosty. This is the face for steps, for a north-facing deck under trees, and for anywhere a wet foot could slip.
• Scratches. The ridges hide dragged-chair marks and grit scratches; a scratch on a grooved board is one more line among many.
• Dirt. The grooves collect leaves, grit and pollen and need a stiff brush along the ridges to clear them. Water can sit in the grooves if the deck is dead level, so build in a fall.
• Look. Modern and linear. It looks less like timber and more like a composite, which some people prefer.

Woodgrain face up

• Look. The embossed grain reads as wood from a few paces, especially in oak, teak and chocolate. This is the face that appears in most of our photos.
• Cleaning. A flat face sweeps clean and dries fast. Barbecue grease wipes off rather than sitting in a groove.
• Grip. Still textured, still better than smooth timber, but less grip than the grooved face when wet. Fine on a deck that gets sun; think twice on steps.
• Scratches. A deep scratch shows as a pale line until it weathers in, which takes a few months. Felt pads under furniture feet.

Mixing the two

Because every board is the same board, you can turn individual ones over. Common combinations:

• Woodgrain across the deck, grooved on the step treads and the step edge.
• Woodgrain in the seating area, grooved on the walkway to the door where wet feet arrive.
• Grooved as a border with woodgrain inside, or the other way round, for a picture-frame look without a different colour.

Keep the pattern deliberate: whole boards, whole zones. A single board flipped by mistake in the middle of a deck is the first thing every visitor notices.

Decide before you lay the first board

The face is fixed once the clips are in; changing your mind means lifting the deck. Lay two boards side by side on the frame, one each way, look at them from the kitchen window and from the garden, wet them with the hose and walk on them. Then decide. Free samples show both faces and both colours before you order a single board.

Does it affect the warranty or the fixings?

No. The ten-year warranty covers the board whichever face is up, and the clips engage the edge groove, which is the same on both sides. The expansion gaps, joist centres and fitting sequence in the installation guide are identical.