MegaSack DRAW - This year's winner is user - rgwb
We will be in touch
to make my decking safe and clean .
tis slippier than the ice it was covered in last week with the green slime .
pressure washer shifts it but is there owt to stop it coming back .
lots of screws from the underside upwards, just don't use bare feet
varnish and then scatteer with sand whilst wet - you can use a flour sifter for this - you may be able to mix it with the varnish as well - used on boat to make areas grippy no ideea if useful on wood. It is impossible to keep clean once done though and goes a dark colour so aesthetically poor I suspect - test an area first?
Can be washed with a stiff brush
turf it 😀
Seal with a decking sealant once cleaned. And clean using anti-fungal cleaners. Tis a pain and ours is the same - was halfway through cleaning it when the snow/frost came.
I've inadvertently done the splits a few times on mine whilst cleaning my bike (wearing flip flops doesn't help either). The varnish + sand sounds like the most low maintenance option...
Grip tape, duh!
Chicken mesh 
Works on north shore obstacles