subfloor.

The supporting floor layer beneath the visible finished floor surface.

Use it for

Words that belong together

• plywood subfloor
• damaged subfloor

On the page

The boards concealed a damaged subfloor.

They exposed the subfloor during renovation.

Moisture had reached the plywood subfloor.

Usage notes

Primary category: architecture. Forms: Singular subfloor; plural subfloors. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.