underlay(redirected from underlaying)
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felt, rubber, etc., laid beneath a carpet to increase insulation and resilience
Material laid directly on the floor to act as a padding; generally for the installation of carpet.
The process of equalizing the impression of the press by inserting small pieces of paper beneath the type form.
1. Same as underlayment.
2. Same as carpet underlayment.
3. A layer, such as asphaltic felt, which isolates a roof covering from the substructure; underfelt.