Crossword Genius

Sloppy, inexpert ratio of substance used for decorating outdoors, perhaps (8,5)

Ross

I believe the answer is:

exterior paint

I'm a little stuck... Click here to teach me more about this clue!

'sloppy inexpert ratio of substance used for decorating' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'outdoors perhaps' is the wordplay.
I cannot really understand how this works, but
'outdoors perhaps' could be 'exterior' (outdoors is a kind of exterior) and 'exterior' is located in the answer.
The remaining letters 'paint' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

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I've seen this clue in The Irish Times.
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