Clearly rooves is perfectly acceptable in East Anglia, Fred, and, by the same token, ruifs - pronounced and often spelt reefs - is perfectly acceptable in the north-east of Scotland. (I must confess I never heard reeves there.)
In addition to rooves, the OED also gives roaues, ruvis, roves etc as plurals at one time/place or another. However, among the illustrations of the word in the plural, all bar one later than the Miltonic one I offered earlier is roofs.
The exception? It was from a 1903 edition of Dialect Notes in America; it reads: "Roof n pl rooves a common plural in Massachussetts." It seems the eastern seaboard of the USA chimes well with the eastern seaboard of England and long may such dialectal usages continue. In such circumstances, a jobbing builder is as good a (local) authority as the OED!