Leveling Your Floor for Vinyl Plank Flooring: A Comprehensive Guide
Installing vinyl plank flooring is a rewarding DIY project that can transform your space. However, before you begin, it's crucial to ensure your subfloor is level. A level floor guarantees a smooth, professional-looking finish and prevents future issues like warping or buckling. This guide will walk you through the process of leveling your floor for vinyl plank flooring.
Understanding Your Subfloor
Before you start, understand the type of subfloor you're working with. Vinyl plank flooring can be installed over concrete, plywood, or oriented strand board (OSB). Each surface has its unique characteristics and leveling requirements. For this guide, we'll focus on plywood and OSB subfloors, as they're the most common in residential settings.
Inspecting Your Subfloor
Begin by inspecting your subfloor for any major issues. Look for signs of rot, delamination, or excessive wear. If you find any of these, they'll need to be addressed before you proceed. Also, check for any nails or screws that might be sticking up. These should be set below the surface of the subfloor to prevent damage to your vinyl planks.

Tools and Materials Needed
- Circular saw
- Jigsaw
- Level
- Tape measure
- Carpenter's pencil
- Self-leveling compound
- Putty knife
- Sandpaper (120-grit)
- Vinyl plank flooring
Preparing the Subfloor
Before you start leveling, ensure your subfloor is clean and dry. Remove any old flooring, nails, or screws. Sweep the surface to remove any dust or debris. If there are any soft spots, they'll need to be reinforced before you proceed.
Filling Gaps and Low Spots
Use a self-leveling compound to fill any gaps or low spots in your subfloor. Follow the manufacturer's instructions for mixing and application. Use a putty knife to spread the compound evenly. Allow it to dry completely before proceeding. Sand any rough spots with 120-grit sandpaper.
Leveling the Subfloor
The goal is to have a subfloor that's level within a 3/16-inch variance over a 10-foot span. Here's how to achieve that:

Using Self-Leveling Compound
If your subfloor has significant low spots or is uneven, you might need to use a self-leveling compound to level it entirely. These compounds are designed to spread evenly and dry to a smooth, level surface. Follow the manufacturer's instructions for mixing and application. Allow it to dry completely before proceeding.
Adding Plywood or OSB Sheets
If your subfloor has high spots or is severely uneven, you might need to add plywood or OSB sheets to level it. Here's how:
- Measure and cut the plywood or OSB sheets to fit the high spots. Use a circular saw or jigsaw for this.
- Apply construction adhesive to the back of the sheet and to the subfloor where it will be placed.
- Position the sheet and secure it with screws or nails. Ensure it's level with the rest of the subfloor.
Final Preparation
Before you install your vinyl plank flooring, give your subfloor a final inspection. Ensure it's clean, dry, and level. If you used self-leveling compound, make sure it's completely dry and sanded smooth. If you added plywood or OSB sheets, ensure they're securely fastened and level.
Installing Your Vinyl Plank Flooring
With your subfloor prepared, you're ready to install your vinyl plank flooring. Follow the manufacturer's instructions for installation. Remember to acclimate your vinyl planks to the room's temperature and humidity for at least 48 hours before installation.
Installing vinyl plank flooring over a level subfloor ensures a beautiful, long-lasting result. With the right preparation and attention to detail, you can achieve a professional-looking finish that will enhance your space for years to come.