Bay enclosure providing shelter (8)
I believe the answer is:
covering
'shelter' is the definition.
(I've seen this before)
'bay enclosure' is the wordplay.
'bay' becomes 'cove' (I've seen this before).
'enclosure' becomes 'ring'.
'cove'+'ring'='COVERING'
'providing' is the link.
(Other definitions for covering that I've seen before include "Enveloping" , "making new version of record" , "shelter" , "Sleeve" , "Protecting" .)