Bing found the following results
5 Times to Replace a Subfloor and How To Do It - Bob Vila
The ground floor and first floor in British and American English
What is the difference between under, below and beneath?
Subflooring vs Joists vs Underlayment Difference - The Spruce
Difference between "under", "underneath", "below" and "beneath"
Subfloors and Underlayment for Ceramic Tile Floors - The Spruce
4 Excellent Below-Grade Flooring Options - Learning Center
How to insulate a floor and why it's worth installing
How to Fix Squeaky Floors - This Old House
below floor | English examples in context | Ludwig