damp-proof

damp-proof

A builder applies a damp-proof layer to the basement wall.

Definition

  1. Adjective:

    • Resistant to moisture: "damp-proof" describes something that is treated or constructed to prevent the passage or absorption of moisture (dampness), especially in buildings or materials.

  2. Verb (less common):

    • To make resistant to moisture: The action of treating or constructing something to protect it from dampness.
Usage Examples

  • Adjective:

    • The basement walls are lined with damp-proof material. (The material prevents moisture from seeping through.)
    • We installed a damp-proof membrane under the flooring. (A protective layer that stops dampness from rising.)

  • Verb:

    • The contractor damp-proofed the foundation before pouring concrete. (The contractor treated the foundation to resist moisture.)
Advanced Usage

  • "damp-proof course" (or "damp-proof membrane"): A horizontal layer of material (e.g., plastic, bitumen) inserted into a wall to prevent rising damp.

    • The old house lacked a damp-proof course, so the walls were constantly wet. (The house had no barrier against moisture from the ground.)

  • "damp-proof paint": A special paint applied to walls to block moisture.

    • They used damp-proof paint on the bathroom ceiling. (The paint prevents water damage from steam.)
Variants and Related Words

  • Damp-proofing (noun): The process or material used to make something damp-proof.

    • Damp-proofing is essential for any building in a wet climate. (The act of protecting against moisture.)

  • Dampness (noun): The state of being slightly wet; moisture.

    • The dampness in the air caused the wallpaper to peel. (The mild wetness.)
Synonyms
  • Waterproof: completely impervious to water (stronger than "damp-proof," which often refers to moisture rather than liquid water).
  • Moisture-resistant: able to withstand or repel moisture.
Related Idioms
  • "Damp-proof" is not commonly used in idioms. However, the concept appears in construction terms like "rising damp" (moisture moving upward through walls from the ground).
    • The damp-proof course prevents rising damp. (The barrier stops ground moisture from climbing the wall.)