What Happens if Water Gets Under Waterproof Laminate Flooring?
Waterproof laminate flooring is a popular choice among homeowners due to its durability, aesthetic appeal, and resistance to water. However, even with the best waterproof technology in place, water can sometimes seep underneath the flooring. In this blog post, we will explore what happens when water gets under waterproof laminate flooring, how it can occur, the effects of water exposure, how to prevent water damage, and tips for maintenance and repair.
Understanding Waterproof Laminate Flooring
Waterproof laminate flooring is designed with a protective surface layer that prevents water from penetrating. This makes it an ideal choice for high-moisture areas like kitchens, bathrooms, and basements. Its core is typically made of high-density fiberboard (HDF), treated to resist swelling and damage from moisture. The surface layer contains a printed design covered by a transparent wear layer, enhancing the floor’s durability and water resistance.
However, despite the waterproof label, the flooring is not entirely impervious to water. In extreme conditions such as flooding, improper installation, or long-standing water exposure, water can find its way under the flooring.
How Water Can Get Under Waterproof Laminate Flooring
- Poor Installation: Proper installation is essential for waterproof laminate flooring to function as intended. If seams between the planks are not tightly sealed or the subfloor is uneven, water can seep through the cracks. Installation errors can leave gaps where moisture can accumulate over time.
- Flooding or Leaks: Waterproof laminate flooring is designed to handle spills and surface moisture, but it can be overwhelmed by floods or major leaks. When large amounts of water are involved, moisture can breach the flooring system’s weakest points, such as joints, expansion gaps, or perimeter seams.
- Standing Water: Although waterproof laminate resists surface water, standing water can pose a problem. If water remains on the floor for an extended period, it may eventually seep through small gaps or imperfections, compromising the floor’s waterproof features.
- Damage to Protective Layers: Over time, scratches, dents, or punctures in the protective wear layer can weaken the floor’s water resistance. Once this layer is compromised, water can infiltrate and damage the core layer.
- Subfloor Moisture: Moisture can also rise from the subfloor, especially in areas like basements. If the subfloor is not properly sealed, moisture from beneath can damage the laminate flooring over time, causing various structural and aesthetic issues.
Effects of Water Getting Under Waterproof Laminate Flooring
When water gets underneath waterproof laminate flooring, several issues can arise, depending on how severe the water exposure is and how quickly it is addressed:
1. Warping and Buckling
When water infiltrates laminate flooring, it can cause warping or buckling. The core layer of laminate, even in waterproof versions, can swell when exposed to moisture, leading to uneven surfaces, lifted edges, and gaps between planks.
2. Mold and Mildew Growth
Water trapped under flooring creates the perfect environment for mold and mildew. These fungi thrive in dark, damp areas and can lead to unpleasant odors, unsightly stains, and health risks for people with allergies or respiratory conditions.
3. Subfloor Damage
If water seeps into the subfloor, it can cause serious damage. Wooden subfloors can rot or deteriorate, leading to expensive repairs. Even concrete subfloors, although more resistant, can develop cracks or harbor moisture that contributes to long-term damage.
4. Delamination
Delamination occurs when the adhesive that holds the layers of laminate together breaks down due to water exposure. This leads to separation of the layers, affecting both the appearance and functionality of the floor, often requiring complete plank replacement.
5. Discoloration
Discoloration is another potential issue, especially if the water contains minerals or contaminants. This can cause fading or staining of the laminate planks, detracting from the overall appearance of the floor.
Preventing Water Damage to Laminate Flooring
To protect your waterproof laminate flooring from water damage, follow these preventive measures:
1. Ensure Proper Installation
A professional installation is key to preventing water from seeping under the flooring. Follow the manufacturer’s guidelines carefully, ensuring that all seams and joints are properly sealed and the subfloor is even. Don’t forget to leave the recommended expansion gaps at the perimeter to allow for the natural movement of the flooring.
2. Use Waterproof Underlayment
For additional protection, consider installing a waterproof underlayment beneath your laminate flooring. This extra layer can help protect against moisture rising from the subfloor, especially in basements or other high-humidity areas.
3. Address Spills and Leaks Immediately
Although waterproof laminate can resist surface water, standing water can eventually seep through. Clean up spills and leaks immediately to avoid long-term damage. Pay special attention to leaks from nearby appliances or plumbing.
4. Seal Gaps and Edges
Using silicone or a waterproof sealant on the edges of laminate flooring, especially in areas prone to moisture like kitchens and bathrooms, can help prevent water from seeping underneath. Seal the perimeter of the flooring, as well as around baseboards and transitions.
5. Control Humidity Levels
Maintaining the right humidity level in your home helps prevent moisture buildup. Use dehumidifiers in high-humidity areas and ensure proper ventilation. Aim to keep indoor humidity levels between 30% and 50% to protect your flooring.
Repairing Water Damage Under Laminate Flooring
If water has already seeped under your laminate flooring, it’s important to address the issue promptly to minimize damage. Here’s how to repair water damage:
1. Identify the Source of Water
The first step in repairing water damage is identifying and fixing the source of moisture. Whether it’s a leak, flood, or moisture from the subfloor, the problem must be solved before repairs begin.
2. Remove Damaged Planks
In the case of warping or buckling, you’ll need to remove the damaged planks. Fortunately, laminate flooring is often installed as a floating floor, so individual planks can be replaced without much difficulty.
3. Dry Out the Area
After removing the damaged planks, it’s essential to dry out the subfloor and surrounding area completely. Use fans, dehumidifiers, and proper ventilation to ensure all moisture is removed before laying down new planks.
4. Replace Underlayment and Planks
If the underlayment has been compromised, it should also be replaced. Once the area is fully dry, reinstall the underlayment and new planks to restore the floor.
Conclusion
While waterproof laminate flooring offers significant protection against moisture, it is not entirely immune to water damage. Water can still find its way under the floor through improper installation, flooding, standing water, or subfloor moisture. When this happens, it can lead to warping, mold growth, delamination, subfloor damage, and discoloration.
By following preventive measures such as proper installation, using waterproof underlayment, and addressing spills promptly, you can greatly reduce the risk of water damage. If water does get under the flooring, taking quick action to repair the damage will help preserve the integrity of your laminate flooring for years to come.
Understanding how to properly maintain and care for your waterproof laminate flooring ensures that you can enjoy its durability and beauty for the long term, without the worry of water damage ruining your investment.