PuraPrime™ Round Hollow Composite Decking Edge Board – Light Grey

PuraPrime™ Composite Decking Edge Board

Finish your PuraPrime deck the way it deserves to be finished. The PuraPrime Edge Board is the bullnose perimeter board designed to wrap the edges of a deck built with PuraPrime composite decking; the small detail that takes a deck from “looks good” to “looks installed by a professional”. With a soft rounded bullnose profile, it covers exposed joist ends, dresses stair nosings, and turns the outer line of your deck into a clean, comfortable, deliberately considered edge. Available in the full PuraPrime colour range so you can match the decking for a seamless look or pick a contrasting shade for a defined border, and built from the same composite as the decking boards themselves. Stocked in our yard for delivery across Ireland.

Why pair Edge Board with PuraPrime decking?

The Edge Board is engineered as the perimeter companion to PuraPrime decking, not a generic finishing piece pulled from a different range. Because both products share the same composite construction, the same colour pigments, and the same surface grain, they age together and weather together; you won’t end up with a mismatched border drifting in a different direction from the decking after a few seasons. The bullnose profile rounds off the outer edge of the deck, which is the detail most people don’t realise is missing on cheaper installations: a sharp 90 degree edge looks unfinished, catches knees and elbows, and shows up as a crisp shadow line that draws the eye to what should be the least important part of the deck. The Edge Board solves all three problems in one component.

Mixing colours is a real creative opportunity, not a compromise. Match the Edge Board to your decking and the deck reads as one large continuous surface; pick a contrasting shade and you draw a deliberate frame around the deck. Both choices look intentional, and both are what professional installers do; the right call is the one that suits your garden and the look you’re going for.

Where it goes and how to install it

The Edge Board runs around the full perimeter of the deck, capping the exposed ends of the decking boards and the joists beneath. For the cleanest install, plan your substructure with the Edge Board in mind from the start: the perimeter of the deck needs a double joist (two joists fixed side by side) so the Edge Board has solid timber to screw into along its full length. Adding an Edge Board to a deck that wasn’t designed for it is possible but fiddly, so it’s worth deciding before you start framing whether you want to wrap the deck or leave the joists exposed. Measure the outer dimensions of your deck before ordering, add any stair tread edges or step nosings you want to dress, and round up; ordering one or two boards more than the bare minimum saves a second trip and gives you margin for cuts.

Fix with standard composite decking screws using pilot holes near the ends of each piece to prevent splitting, and butt the joints tight; matching composite trim adhesive on butt joints can give a near invisible seam if you want the cleanest possible finish. The Edge Board can also be used to dress the inside face of a sunken or raised deck step, finish the side of a built in planter or bench, or wrap around a hot tub surround built into the deck.

Finishing and maintenance

Once it’s down, the Edge Board needs the same level of care as the rest of your PuraPrime deck, which is to say almost none. The composite is colour fast, weather resistant, and built to shrug off rain, frost, and UV without bleaching or splintering. There’s no annual oiling, no staining, no sealing; a soft brush and diluted neutral cleaner once or twice a year handles routine cleaning. Skip the pressure washer, especially on a fresh installation, and avoid wire brushes that can score the surface. The Edge Board will weather and tone in step with your PuraPrime decking, which is the point: the deck and its perimeter age together as one finished surface rather than drifting apart.