The Collaborative International Dictionary of English v.0.48:
Unroofed \Un*roofed"\, a. 1. [Properly p. p. of unroof.] Stripped of a roof, or similar covering. [1913 Webster] Broken carriages, dead horses, unroofed cottages, all indicated the movements. --Sir W. Scott. [1913 Webster] 2. [Pref. un- not + roofed.] Not yet roofed. [1913 Webster]WordNet (r) 3.0 (2006):
unroofed adj 1: having no roof; "an unroofed shed"