underlay
word
Definition
A layer of material placed underneath something, usually to provide support, softness, or protection, especially under carpets or flooring.
Usage & Nuances
Mainly a technical or industrial term used for floor coverings, packaging, or construction; not common in everyday conversation. Common collocations: 'carpet underlay', 'foam underlay'. Do not confuse with 'overlay', which goes on top.
Example Sentences
The carpet needs a good underlay to feel soft.
basic
We installed a foam underlay before laying the floor.
basic
Old underlay can make a carpet uncomfortable.
basic
If you want your new floor to last, use a high-quality underlay.
natural
Replacing just the underlay can make old carpet feel new again.
natural
With the right underlay, your steps will feel quieter and softer.
natural