Engaged in fixing Ken's roof with a piece of PVC (6,3)
I believe the answer is:
spoken for
'engaged' is the definition.
(I've seen this before)
'fixing ken's roof with a piece of pvc' is the wordplay.
'fixing' indicates an anagram.
'with' indicates putting letters inside.
'a piece of' indicates taking the first letters.
The first letter of 'pvc' is 'p'.
'kens'+'roof'='kensroof'
'kensroof' with letters rearranged gives 'sokenfor'.
'sokenfor' placed around 'p' is 'SPOKEN FOR'.
'in' is the link.
(Other definitions for spoken for that I've seen before include "Unavailable (as a partner)" , "Engaged" , "Reserved" , "Sold!" , "Romantically attached" .)