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How to Level a Subfloor for Laminate Flooring

Laminate flooring in Goldsboro and Hummelstown, PA offers a cost-effective and stylish alternative to hardwood, but its success relies on a level subfloor. Unevenness in the subfloor can lead to squeaky, unstable floors and even damage your new laminate planks. 
 

If you're planning a DIY laminate installation, here's a guide on how to level a subfloor for laminate flooring and ensure a smooth, long-lasting finish. 
 

Why leveling your subfloor matters 

Before diving into the process, let's understand why leveling is crucial:
 

Stability: 

A level subfloor provides a stable base for your laminate planks, preventing them from flexing or moving, which can cause cracks or gaps.
 

Sound reduction: 

Uneven subfloors can lead to squeaking floors. Leveling eliminates this issue, ensuring a quieter and more comfortable living space.
 

Visual appeal: 

Laminate installed over an uneven subfloor will show imperfections, detracting from its beauty.
 

Methods for leveling a subfloor for your new laminate floors 

The best method for leveling depends on the type of subfloor and the extent of unevenness:
 

Self-leveling compound (SLC): 

For minor unevenness or depressions, a self-leveling compound is a great solution. This pourable mixture spreads evenly across the floor, filling low spots and creating a smooth surface. It's easy to apply, but requires adequate drying time before installing laminate.
 

Shims or underlayment: 

For slight unevenness, shims (small wood wedges) or underlayment can be used to fill gaps or raise low spots. This is a cost-effective solution for minor adjustments.
 

Plywood underlayment: 

If your subfloor is significantly uneven, installing a layer of plywood underlayment can provide a more stable and level base. Ensure the plywood is securely fastened to the existing subfloor to prevent movement.
 

Subfloor replacement: 

In cases of severe damage or rot, a complete subfloor replacement may be necessary. This is a more extensive project but ensures a solid foundation for your new flooring.
 

Steps on how to level subfloor for laminate

  1. Assess the Subfloor: Use a long level or straight edge to check for dips, humps, or slopes in your subfloor. Mark any areas that need attention.
  2. Prepare the Surface: Clean the subfloor thoroughly to remove any debris or dust. Repair any cracks or holes in a concrete subfloor with a patching compound.
  3. Choose Your Leveling Method: Based on the severity of unevenness and the type of subfloor, choose the appropriate leveling method (SLC, shims, underlayment, or replacement).
  4. Apply the Leveling Material: Follow the manufacturer's instructions carefully when applying a self-leveling compound or installing underlayment. Use shims strategically to lift low spots.
  5. Check for Levelness: After the leveling material has cured, check the floor again for levelness. Make any necessary adjustments before proceeding with laminate installation.


Important considerations

  • Moisture: Always check for moisture issues in your subfloor before leveling. Moisture can lead to mold growth and compromise the stability of your new flooring.
  • Professional Consultation: If you're unsure about the best leveling method or have concerns about the condition of your subfloor, consult a professional flooring installer. They can assess the situation and recommend the best course of action.


Level up your flooring project with Couch Potato Carpet & Flooring

A level subfloor is the foundation of a beautiful and long-lasting laminate floor. By taking the time to properly level your subfloor, you'll ensure a successful installation and years of enjoyment from your new flooring.
 

Visit Couch Potato Carpet & Flooring in Hummelstown or Goldsboro, PA. We have over 30 years of experience in the flooring industry and proudly serve Harrisburg, York, Carlisle, Hershey, and Lancaster. Our team of experts can assess your subfloor, recommend the best leveling method, and ensure a flawless laminate installation.