underlay

Definitions

Construction

  • A material, such as asphaltic felt, that isolates a roof covering from the deck. See also underlayment and carpet underlayment.

Publishing

  • noun card used to raise the height of a block or plate
  • verb to raise the height of a printing plate by putting something such as a piece of card under it

Real Estate

  • noun a layer of cushioning and insulating material put down on a floor before a carpet is laid
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