What composite decking cleaner ?

[dal]

Hi ocUK, so my composite decking which has been down for 2 years has got some algae on it which I can't completely remove even with a pressure washer. Has anyone got any suggestions on what cleaner to use.
I have heard you can use white vinegar on it but I've not tried that yet.

Thanks in advance

 

[radderfire]

One option is dilute white vinegar and scrubbing it.

Another is dilute bleach solution, which is what I would use.

In each case, try it on a small inconspicuous section first to check it won't damage the decking. Run-off could also damage plants so bear that in mind.

 

[Haze]

It's a shame no one has ever asked this before.... You would be able to do a search and find the answer straight away if they had....