Sloped Balcony Decking

[andygray]

Hi All
I am looking to cover an existing external balcony (currently no slope) with hollow composite decking boards. I want it to be slightly sloped to allow rainwater runoff. My question is can you get shallow angled joists (that have a triangular side profile) and which the decking boards screw onto so the floor will be slightly sloped? If not what is the best solution?
Is there a system that you can buy that includes both compatible joists and boards ?

Many thanks

 

[Tigercubrider]

https://www.envirobuild.com/product...KnFAQyJHACqetJMoSP-Be3bhk8DwPgPxoCR8sQAvD_BwE

This sort of thing is what you need

 

[oldbutnotdead]

If you've got a decent timber merchant they'll be able to cut the firrings for you- or these or similar might do https://www.ebay.co.uk/itm/Firring-...red-Timber-3-6m-44mm-2mm-x-44mm-/352416038333. Composite boards- you're on your own there

 

[foxhole]

The rain will run off , even if it’s completly level .