Set about securing opening for roofs (8)

I believe the answer is:

thatches

'for roofs' is the definition.
(thatch is a kind of roof)

'set about securing opening' is the wordplay.
'about' shows that the letters should be reversed in order.
'securing' is an insertion indicator.
'opening' becomes 'hatch' (I've seen this before).
'set' in reverse letter order is 'tes'.
'tes' placed around 'hatch' is 'THATCHES'.

(Another definition for thatches that I've seen is " Straw covers".)

I've seen this clue in The Times and The Sunday Times.

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