waterproofer

English

Etymology

From waterproof +‎ -er.

Noun

waterproofer (plural waterproofers)

  1. One who, or that which, makes waterproof.
    • 1985, The Architects' Journal, volume 181, page 65:
      It must not contain waterproofers, integral hardeners, plasticisers, accelerators or other additives because these act as delaminators for resins.
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