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subfloor

American

[suhb-flawr, -flohr] / ˈsʌbˌflɔr, -ˌfloʊr /

Often subflooring

noun

a rough floor beneath a finished floor.

subfloor British

/ ˈsʌbˌflɔː /

noun

a rough floor that forms a base for a finished floor

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of subfloor

sub- + floor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

subfloor

Within an hour they had assembled a section of subfloor for a house that is soon to be delivered to East Palm Street in Altadena.

From Los Angeles Times ● Jul. 7, 2026

He had installed the toilet flange directly on top of the subfloor of the condo.

From Seattle Times ● Apr. 10, 2023

It would have taken the builder just three extra hours to install aluminum heat transfer plates under the wood subfloor in the bathroom.

From Seattle Times ● Mar. 7, 2023

If that doesn’t work, or if your cat seems to be returning to the same area, you might need to pull up part of the carpet, replace the pad and seal the subfloor with shellac.

From Washington Post ● Jul. 18, 2022

Jack aims the camera at my new subfloor.

From "The House That Lou Built" by Mae Respicio

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023