Strategies for Removing a Plywood Subfloor: A Comprehensive Guide

Introduction

Replacing or removing an old plywood subfloor can be a challenging task. However, with the right tools and techniques, it can be a straightforward process that yields a flat and level foundation for your new flooring. In this article, we will explore various methods to remove a plywood subfloor effectively and efficiently.

Removing Plywood Subfloor Methods

Method 1: Basic Removal Technique

Prepare the Area: Begin by removing any existing floor coverings and screws or nails that secure the plywood. This will make it easier to access and remove the subfloor. Use a Circular Saw: Cut the plywood into manageable sections using a circular saw. This will make it easier to lift the sections without causing damage. Pry Up the Sections: Use a crowbar or pry bar to lift the sections. Work carefully to avoid damaging the underlying layers or the remaining sections.

Method 2: Careful Removal for Reuse

Remove Fasteners: Carefully remove nails or screws using a pry bar or drill. This will allow you to lift the plywood without damaging it. Cut into Smaller Sections: If the subfloor is glued, use a circular saw to cut it into smaller sections to make the lifting process easier. Gradually Pry Up: Insert a pry bar under the edges and gently work it free to avoid splintering. Work systematically to preserve the plywood's integrity.

Advanced Techniques

Method 3: Using Nail Drills

If you want to remove nails or screws without damaging the plywood, consider using a small hole saw to drill around them. This allows you to easily remove the nails or screws and leaves small plugs that can be broken off. This method is particularly useful if you plan to reuse the plywood.

Method 4: Grinding Nails Off

For those with a grinder, use a Hitachi grinder with a thin 1/8" x 4 1/2" wheel to cut off the heads of the nails. This method is efficient and allows you to easily remove the plywood after cutting. While the plywood may have cutting marks, it can still be reused.

Method 5: Strategic Cutting with a Depth Setting

First, set the saw depth to 5/8" or 3/4" and cut around the perimeter of the room, running the saw against the wall or baseboard. Use saws-all to cut corners precisely. Then, start cutting between floor joists from wall to wall, working your way to the door. Lay down some planks across the joists, kick bend, and pry off the plywood. You might need to cross-cut here and there to ensure complete removal.

Conclusion

Removing a plywood subfloor requires a combination of patience, skill, and the right tools. Whether you are removing it to install new flooring or for other reasons, understanding the different methods can make the process smoother and more efficient. For more detailed advice or additional guidance, visit my Quora profile for more in-depth insights.