Laminate flooring is a popular choice for homeowners due to its affordability, durability, and aesthetic appeal. However, like any flooring material, it is not immune to issues. One common problem that some homeowners face is bubbling or buckling of their laminate floors. This can be both an eyesore and a potential hazard if left unchecked. But why does this happen, and what can you do to prevent it? In this blog, we’ll explore the causes of bubbling in laminate flooring and provide some solutions to help you maintain your floors in top condition.

Understanding bubbling in laminate flooring

What is bubbling in laminate flooring?

Bubbling, also referred to as buckling or warping, occurs when sections of your laminate flooring swell or rise above the level of the rest of the floor. This typically happens in specific spots rather than across the entire floor, creating uneven surfaces that can interfere with the floor's appearance and functionality.

Why bubbling matters

While it may seem like a minor cosmetic issue at first, bubbling in laminate flooring can lead to more serious problems if not addressed. It can cause the flooring to weaken, crack, or lift completely, making it unsafe to walk on. Additionally, bubbling often indicates underlying issues that, if ignored, could cause further damage to the subfloor or other areas of your home.

Common causes of laminate flooring bubbles

Moisture and water damage

The most common culprit behind bubbling in laminate flooring is moisture. Laminate flooring is made up of layers of fiberboard with a protective surface on top, and while this top layer is water-resistant, the core layers are not. When water seeps into the seams of the laminate, it can cause the fibers to swell, resulting in bubbling or warping.

Sources of moisture that can affect laminate flooring

Spills or pet accidents: Liquid spills or pet accidents that are not promptly cleaned can seep into the gaps between laminate planks.
High humidity: If your home experiences high humidity, especially in kitchens, bathrooms, or basements, moisture can penetrate the flooring over time.
Leaky appliances or plumbing: Appliances like dishwashers, refrigerators, and washing machines, as well as leaky pipes, can introduce water to areas beneath or around laminate flooring.
Subfloor moisture: If your subfloor was not properly dried before the laminate was installed, trapped moisture can rise up and cause bubbling.

Poor installation

Improper installation can also lead to bubbling or buckling over time. Laminate flooring requires a certain amount of space for expansion and contraction as the temperature and humidity levels fluctuate. If the flooring is installed too tightly against the walls or without adequate expansion gaps, it can cause the planks to press against each other and buckle as they expand.

Installation mistakes that contribute to bubbling

No expansion gap: An expansion gap is a small space left between the laminate flooring and the wall to allow for natural expansion and contraction. If this gap is too small or non-existent, the floor can start to bubble.
Subpar underlayment: The underlayment acts as a moisture barrier and cushioning layer between the laminate flooring and the subfloor. Using poor-quality underlayment or skipping this step entirely can increase the risk of moisture-related problems.
Improper acclimation: Before installation, laminate flooring must acclimate to the room's temperature and humidity for at least 48 hours. Skipping this step can cause the flooring to expand or contract too quickly, leading to bubbling.

Heavy furniture or weight

Excessive weight from heavy furniture or appliances can also lead to bubbling in laminate floors. If furniture is placed on the laminate without proper padding or support, it can restrict the floor’s ability to expand and contract naturally, causing the planks to warp over time. Similarly, dragging heavy objects across the floor can damage the surface and allow moisture to seep in, leading to bubbling.

Defective laminate planks

In some cases, the bubbling may be due to defects in the laminate flooring itself. While uncommon, some laminate planks may come from the manufacturer with weaknesses in their protective layer or issues in their construction that make them more prone to warping and bubbling. If your laminate flooring starts bubbling soon after installation, it’s possible that defective materials could be the cause.

How to prevent and fix bubbling in laminate flooring

Addressing moisture issues

Since moisture is the most common cause of bubbling, taking steps to protect your laminate flooring from water damage is crucial.

Prevention tips

Clean spills immediately: Be diligent about cleaning up any liquid spills or pet accidents as soon as they occur to prevent moisture from seeping into the flooring.
Use rugs in high-moisture areas: Place waterproof rugs or mats near entryways, kitchens, or bathrooms to reduce the amount of water that comes into contact with the laminate.
Control humidity levels: Keep your home’s humidity level between 35-55% to avoid excess moisture buildup. Using a dehumidifier in particularly humid rooms can help protect your floors.
Fix leaks promptly: If you notice any leaky appliances or plumbing, address the issue immediately to prevent water from damaging the flooring or subfloor.

Fixing moisture damage

If bubbling is already occurring due to moisture, you may need to replace the affected planks. Depending on the severity, this could be a small repair or a more extensive replacement of several planks. Ensure that any underlying moisture issues are addressed before replacing the damaged laminate.

Ensure proper installation

Proper installation is key to preventing laminate flooring from bubbling in the first place.

Installation tips

Leave an expansion gap: Ensure that an expansion gap of at least ¼ inch is left between the flooring and the walls to allow for natural expansion and contraction.
Use a high-quality underlayment: Choose a moisture-resistant underlayment that will protect the laminate from moisture seeping up from the subfloor.
Acclimate the flooring: Allow the laminate to acclimate to the room’s environment for at least 48 hours before installation to reduce the risk of expansion and contraction problems.

Protect your laminate from heavy furniture

To prevent heavy furniture or appliances from causing bubbles in your laminate flooring, take a few simple precautions.

Prevention tips

Use furniture pads: Place protective pads under the legs of heavy furniture to distribute the weight evenly and allow the floor to move naturally.
Rearrange periodically: Occasionally rearrange furniture to reduce pressure in one area of the floor and prevent bubbling from long-term weight stress.
Avoid dragging heavy items: Always lift heavy furniture or appliances when moving them across the laminate floor to avoid scratching or damaging the surface.

Bubbling in laminate flooring can be frustrating, but it is a problem that can be prevented and often resolved with the right care and maintenance. Whether caused by moisture, improper installation, or heavy furniture, addressing the issue early is key to preventing long-term damage to your floors. By following proper installation practices and maintaining your laminate floors carefully, you can enjoy beautiful, durable flooring for years to come.

If you're dealing with bubbling in your laminate flooring or need expert advice on maintaining your floors, visit J’s Flooring Center in Erie, PA, or browse our selection of high-quality laminate options online. Our team is here to help you find the best solutions for all your flooring needs!

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