Building materials

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Across
  1. 4. plaster
  2. 5. brick
  3. 6. wood
  4. 10. concrete
  5. 11. slate
  6. 12. gravel
  7. 14. steel
  8. 15. plank
Down
  1. 1. glass
  2. 2. marble
  3. 3. floorboard
  4. 7. tile
  5. 8. clay
  6. 9. cement
  7. 11. stone
  8. 13. vinyl