External cladding moulded to be hard wearing (15)

I believe the answer is:

weatherboarding

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'external cladding' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'moulded to be hard wearing' is the wordplay.
'moulded' is an anagram indicator.
'to'+'be'+'hard'+'wearing'='tobehardwearing'
'tobehardwearing' with letters rearranged gives 'WEATHERBOARDING'.

Can you help me to learn more?

(Other definitions for weatherboarding that I've seen before include "Rainproof material" , "protection from the rain" , "Form of protection" .)

I've seen this clue in The Times.

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