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

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

Chalk a line on the wood subfloor or concrete slab.

From Seattle Times ● Dec. 12, 2022

It had cinder-block walls, basic framing, zero insulation and a subfloor of low-grade plywood that was prone to dust and splinters, a hazard for someone like me, who likes to go barefoot.

From Washington Post ● May 10, 2022

After a while the others spray on another coat, and the trailer’s ready for the 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