Boise Cascade Sturd-I-Floor

Subfloor panels with an integrated layer of underlayment for performance you can count on.


Boise Cascade® Sturd-I-Floor® plywood panels are manufactured from thin layers of wood veneer laid crosswise, then bonded together with strong, moisture-resistant adhesives under heat and pressure.

This process creates a subfloor panel with a built-in underlayment* — it’s a great solution when used under carpet and pad. When other finish flooring products are used, an additional underlayment is frequently installed over the Sturd-I-Floor panel.

*For underlayment specifications for your project, refer to the APA guide.

Sturd-I-Floor Benefits

  • Plywood panels dry faster and experience less edge swell if exposed to moisture than other flooring materials
  • T&G edges allow for easy installation and a stronger floor
  • Solid and consistent performance
  • Built-in underlayment ideal for carpet installation

How it’s Made

  • Available with square or tongue-and-groove edges
  • Tongue-and-groove edges add floor system strength and stability, helping to eliminate nail popping and squeaky floors
  • Exposure 1 classified to help endure typical weather conditions during the construction process
  • Species: Western and Southern Yellow Pine


  • 19/32″
  • 23/32″
  • 1⅛”

Panel Size: 4’x8′
All T&G is available in scant face (47½”) and full face (48″)

The Tongue-and-Groove Edge Advantage

Sturd-I-Floor plywood panels with tongue-and-groove (T&G) edges add strength and stability to the floor system, helping to eliminate nail popping and squeaky floors. When placed side by side, the tongue-and-groove helps to lock the panels together for a snug fit and to maintain the recommended 1/8" spacing on the ends during installation. The T&G panels also makes installation easier by eliminating the need for blocking along long panel edges.

Sturd-I-Floor Spec Sheet

Product Literature

Safety Data Sheets
SDS Plywood View
SDS Wood Dust View

Support You Can Count On