Sentence:  Beyond that misty gray of the rain , he saw the stretching hutment , low diminutive log cabins , chinked with mud , with doorways a man would have to crouch to get through , with <WSD>roofs</WSD> of tenting laid over boughs or boards from hardtack boxes , or fence rails , with cranky chimneys of sticks and dried mud . 
Meaning of the word marked with <WSD> tags:  a protective covering that covers or forms the top of a building