Help protect children from gaming harms.

Take our survey

Please or to access all these features

Property/DIY

Join our Property forum for renovation, DIY, and house selling advice.

Composite decking discolouration

2 replies

DozyCrow · 01/09/2026 20:46

Around March time I had decking laid in my garden. I went for composite as I thought it looked better and would last longer. A week after it was laid I added new patio furniture and an outdoor rug. Very happy with it....until today.

I was sweeping the rug and realised it had got quite dirty, so decided to move it and decide how to best clean it. At first I thought it had stained the decking, as the area under the rug was darker. However, since consulting Google I've now learned that brand new composite decking lightens during the first few months, due to 'weathering', before it settles into its final colour. Apparently this process is known as ‘extractive bleeding’, and you shouldn't cover it up while this process occurs. Would have been nice to know this beforehand, but c'est la vie.

Has anyone else had this, and did you find a way to get the darker section to match the already weathered bit? I'm leaving it uncovered now in the hope it will even out, but have a sinking feeling I'll always have two-tone decking now, as the lighter section has had many weeks of very hot sun on it.

Photo being added to show what's happened. The darker bit on the left is where the rug was. I'm quite shocked at how much colour has bled. I'd have picked a darker colour if I'd have known it would lighten so much.

Composite decking discolouration
OP posts:
Whenwillitrainagain · 02/09/2026 01:06

It is annoying. We have the same fading going on indoors with our parquet flooring and the rug, but we never move the rug so it doesn’t really matter.
I don’t know much about composite decking, but I have had Winawood composite benches for years now. I would think it would even out over time because our benches look pretty much the same whether it’s the sun exposed side or the side against the wall.
Is the decking like the benches, where you can sand it and it’s the same right the way through?
I have to jet wash our benches and have sanded them where they’ve been marked by kids’ felt tips. I think it all just evens out over time.
In any event, our benches still look great after many years, so I think your decking will be a good investment.

DozyCrow · 02/09/2026 06:42

Hi, thanks for the reply. If I sanded the boards I'd lose the wood grain effect as you can see from the composition it doesn't run through the board. I'm hoping it will even up in time, though I'm disappointed to have lost so much of the original colour in the exposed parts. Not the colour I chose at all.

Composite decking discolouration
OP posts:
New posts on this thread. Refresh page