This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The material prepared for building roofs or covering them; generally the covering material only, as sheathing, shingles, slates, and the like.

"The old shabby church showed, as usual, its quaint extent of roofage and the relievo skeleton on one gable, still blackened with the fire of thirty years ago."