With roof gone, works hard to get family some waterproofing (7)
I believe the answer is:
oilskin
'some waterproofing' is the definition.
(waterproof garment)
'with roof gone works hard to get family' is the wordplay.
'with roof gone' means to remove the first letter (in a down clue, the 'roof' is the top letter).
'works hard' becomes 'moils' (I've seen this in another clue).
'to get' is a charade indicator (letters next to each other).
'family' becomes 'kin' (synonyms).
'moils' with its initial letter removed is 'oils'.
'oils'+'kin'='OILSKIN'
(Other definitions for oilskin that I've seen before include "Waterproof fabric" , "Heavy-duty waterproof" , "foul weather item" , "Heavy waterproofed cloth" , "material" .)