How well do you know your materials

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Across
  1. 2. a strong team of cement concrete and steel
  2. 3. oldest building material
  3. 4. I can help you swing back and forth!
  4. 5. the dry wall loves me
  5. 10. the OG material of kitchen counter
  6. 12. decorative design repeated to form a pattern
  7. 13. marble used for the construction of Taj Mahal
  8. 14. I was there before Lintel existed
  9. 15. finish on Veneer
  10. 16. you look up to me
  11. 18. style prominently used all over Asia
  12. 20. Never ending Saga every semester
Down
  1. 1. they use me as an alternative to marble
  2. 6. consisting tones of one colour
  3. 7. kitchen constructed in modules
  4. 8. crucial part of plumbing/drainage
  5. 9. I'm one of those styles used in fairytales
  6. 11. alternative to traditional bricks
  7. 17. paint wash with chalky finish
  8. 19. I love bold colours with taste of royalty