Fixing Gap in Vinyl Plank Flooring: Easy DIY Solutions & Tips
12.03.2022 ... Fixing those gaps in your floor planks is actually SUPER easy! #homehack #diy #flooring CHECK OUT THESE RELATED VIDEOS!...
Few things are as jarring as the sudden gap that appears between vinyl plank flooring. Whether it is a whisper-thin line or a pronounced separation, this flaw disrupts the clean, seamless look that makes vinyl such a popular choice for modern interiors. The good news is that fixing this issue is often a straightforward process that you can handle without professional help.
Before you dive into the repair, it is crucial to understand why the gap formed in the first place. Unlike rigid materials like tile or hardwood, vinyl plank is designed to move slightly with temperature and humidity changes. However, excessive movement usually points to an installation or subfloor issue rather than a manufacturing defect. Identifying the root cause is the first step in ensuring your repair lasts for years to come.
Diagnosing the Cause of the Gap
Environmental Shifts
The most common reason for separation is environmental fluctuation. If the air in your home becomes extremely dry during the winter heating season, the vinyl can contract, creating space between the planks. Conversely, high humidity in the summer can cause expansion, and when the moisture drops, the boards may not return perfectly to their previous position, leaving a gap.
Improper Installation or Acclimation
A gap often appears if the planks were not given adequate time to acclimate to the home’s environment before installation. Vinyl needs to adjust to the specific temperature and humidity of its final space. Additionally, the perimeter expansion gap—the space left between the planks and the wall—might have been filled too tightly with flooring transition strips, preventing natural movement and causing the boards to buckle apart over time.
Tools and Materials for the Repair
You do not need a full toolkit to fix a gap in vinyl plank flooring. Having the right items on hand will make the process smooth and efficient. Most homeowners can gather these supplies from a local hardware store.
| Tool/Supply | Purpose |
| Rubber Mallet | Gently tapping the plank back into place without damaging the surface. |
| Crowbar or Pull Bar | Carefully lifting the damaged plank without breaking it. |
| Cutting Tool (Utility Knife or Saw) | Trimming a replacement plank to size if necessary. |
| Replacement Plank | A spare plank cut to match the original, ideally from the same batch. |
| Clean Rags and Mild Cleaner | Removing dirt and debris from the groove and tongue of the plank. |
The Repair Process: Reconnecting the Planks
The primary method for fixing a gap involves re-engaging the tongue and groove system of the vinyl planks. Start by thoroughly cleaning the tongue (the narrow protrusion on the end of the plank) and the groove (the hollow indentation) of both the separated plank and its neighbor. Even tiny particles of dust or debris can prevent a tight fit, causing the gap to return.
Once clean, carefully insert the tongue of the loose plank back into the groove of the adjacent board. You will likely need to position the plank at a steep angle, almost parallel to the floor, to slide the connection back together. As you guide the plank into place, use a rubber mallet to gently tap the end until the seam lines up and the gap disappears. You should hear a series of soft clicks as the connection locks into place.
Handling Buckling and Severe Separation
If the gap is accompanied by a raised bump or the plank has curled upward, you are dealing with a buckle. This usually occurs due to extreme humidity or a failed attempt to hide the perimeter gap with a baseboard. To fix this, you must relieve the pressure.
Use a crowbar to carefully lift the buckled plank, starting from the edge farthest from the wall. Slowly press the board down flat, releasing the tension that caused the warp. it is essential to address the humidity issue in the room and ensure the perimeter gap is clear so the board has room to expand and contract without buckling in the future.
When to Replace the Plank
Sometimes, the damage is too severe for a simple reconnection. If the tongue is shattered, the groove is deformed, or the plank has cracked through, a replacement is necessary. Fortunately, vinyl plank flooring is designed for easy replacement. You can usually remove the damaged board by lifting the adjacent plank slightly to unhook the tongue or by cutting the plank into sections for easier removal.
Once the old plank is out, inspect the subfloor for any irregularities or leftover debris. Measure the new plank (which should ideally be from an unused box to ensure color consistency) and slide it into place, ensuring the long edges connect smoothly. Use a shop vac to blow any dust out of the subfloor before installing the new piece to guarantee a flawless finish.
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