Subfloor Installation Guide

This collection of videos and animations illustrates standard subfloor installation over wood framing and a floating subfloor assembly over a concrete slab (or a 'slabless slab' as the case may be).
April 2, 2026
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This collection of videos and animations illustrates standard subfloor installation over wood framing and a floating subfloor assembly over a concrete slab (or a 'slabless slab' as the case may be).

Demonstration Videos

Five videos about how to install a subfloor over thick insulation without sleepers.
May 28, 2026
The first sheet sets the layout
Oct. 27, 2018
Repetitive tasks—with reasons behind them—consolidate into a squeak-free subfloor
Oct. 30, 2018
The floor system should not cause a bump in the wall
Nov. 2, 2018

Animated details

The first row of subfloor sets the tone and keeps the layout true
Sept. 12, 2023
Glue the rim joist, caulk the gaps, and overhang the wall sheathing to tighten this leaky building assembly
Sept. 29, 2017
Pressure-treated sleepers and Expanded polystyrene foam insulation (XPS) isolate the subfloor from the slab
Dec. 3, 2024
Wait, what?
Nov. 6, 2018

About the Author

Dan Morrison

Dan Morrison is a founding editor of ProTradeCraft.com, where he is also the editor-in-chief. Fun fact: Dan is also a founding editor of Green Building Advisor and executive editor of Fine Homebuilding.

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