What happens if water gets under waterproof vinyl plank flooring?

Author: Mr. Nicholas Sporer  |  Last update: Saturday, April 11, 2026

In other words, you can't just ignore water under the flooring just because you have waterproof flooring. Excess moisture and water under the flooring can deteriorate and soften vinyl planks. It can also lead to mold growth, setting up a potentially unhealthy indoor environment.

What to do if water gets under waterproof vinyl flooring?

If water has seeped under the flooring, it's crucial to dry out the subfloor completely before reinstalling the vinyl. Use fans, dehumidifiers, or professional drying equipment to ensure all moisture is removed.

Can mold grow under vinyl plank flooring?

Mold Growth: Mold can thrive under vinyl plank flooring due to moisture. Health Risks: Exposure to mold can lead to respiratory issues, allergies, and more serious health conditions. Vinyl Plank Flooring: While durable and versatile, can be a breeding ground for mold if not properly maintained.

Can water penetrate vinyl plank flooring?

2)Improper Installation

Otherwise, correctly installed vinyl planks will stop water from penetrating and they withstand high humidity levels fairly well.

What happens if water gets under waterproof laminate flooring?

Delamination: Prolonged exposure to water can cause the layers of laminate to separate, a condition known as delamination. This can compromise the integrity of the flooring.

🚨 Attention all luxury vinyl plank (LVP) owners! 🚨When water is trapped beneath your LVP flooring.

How long can water sit on waterproof laminate flooring?

You should always replace wet laminate flooring when the damage is a result of a sewage backup due to the risk of mold and bacteria or if you cannot start cleaning up right away after a flood, if water has been present for more than 24 hours, or if you notice the laminate floor is starting to swell or buckle.

How long does it take for mold to grow under wet laminate?

Mold from trapped moisture on floors can start forming in as little as 24 hours. Vinyl, tile, laminate, and other water-resistant flooring can still sustain water damage and develop mold. Call a professional water damage restoration company as soon as signs of water damage are detected.

What destroys vinyl plank flooring?

Enemies of Vinyl Flooring
  • Dirt and Grit: Acting like sandpaper, dirt and grit particles can scratch the wear layer of the vinyl, especially at entryways and high-traffic areas. ...
  • Sharp Objects: Dropping sharp objects like knives or tools can puncture or gouge vinyl.

Is waterproof vinyl really waterproof?

On the other hand, waterproof vinyl, particularly SPC, provides excellent water resistance, durability, and versatility. Waterproof vinyl is often favored for areas with high moisture levels, while waterproof laminate can be an excellent choice for those seeking a balance between aesthetics and water resistance.

Do you need a moisture barrier under waterproof vinyl plank flooring?

In many cases, you don't. The beauty of waterproof flooring is that it provides a protective barrier against water, eliminating the need for additional measures like a vapor barrier in most situations.

How to tell if mold is growing under the floor?

One of the most apparent indicators of mold is visible damage to your flooring. Look for: Discoloration: Patches of yellow, green, or black can signal mold growth. Warping: Uneven or bulging floorboards suggest moisture buildup, a breeding ground for mold.

Should I put something under vinyl plank flooring?

If your planks already have a pad-attached underlayment, you most likely won't need an underlayment. However, if your flooring manufacturers installation instructions allow for an extra underlayment, adding an extra underlayment will provide improved sound reduction, insulation, and moisture protection.

What is the black stuff under the vinyl floor?

If you see black stuff under your vinyl flooring, it's probably mold. There is a chance it could just be dirt, dried-out adhesive, or slight water damage, but some of those are causes for mold growth, so you should remove it immediately anyway. In some older homes, it could be black mastic asbestos.

Can vinyl plank flooring survive flooding?

If your home experiences flooding or standing water for an extended period of time, you will need to replace your luxury vinyl plank flooring before any major damages can set in. Thus, luxury vinyl plank flooring is waterproof, but not flood-proof.

What happens to vinyl when it gets wet?

Warping. To produce high-quality sound, vinyl records should be kept flat. When a record is exposed to water, it might distort, creating uneven playback and potentially rendering it unplayable. This is because vinyl records are made of PVC, a form of plastic that softens when wet.

Why has my vinyl floor bubbling up?

Description: Bubbles often occur when the vinyl flooring is not installed correctly. This can happen if the adhesive is not applied evenly or if the vinyl is not properly smoothed out during installation, trapping air pockets underneath.

What happens if water gets under waterproof vinyl flooring?

In other words, you can't just ignore water under the flooring just because you have waterproof flooring. Excess moisture and water under the flooring can deteriorate and soften vinyl planks. It can also lead to mold growth, setting up a potentially unhealthy indoor environment.

What are the disadvantages of vinyl plank flooring?

Firstly, it can be difficult to install and may require professional help. Secondly, vinyl plank flooring is not as durable as other types of flooring such as hardwood or tile. It is also prone to scratching and denting from heavy furniture or objects being dragged across the surface.

How long can water sit on vinyl plank flooring?

As long as you wipe up the spill quickly, your floors will not be compromised or damaged, but water-resistant vinyl planks cannot hold up to long-standing spills like plumbing leaks, an overflowing bath, or a flooded basement from a thunderstorm.

What is the life expectancy of vinyl plank flooring?

Generally speaking, vinyl sheet flooring will last anywhere from 10 to 20 years, while vinyl plank and tile flooring will last 15 to 20 years. The thickness of its wear layer vastly impacts vinyl flooring's lifespan, so pay attention to this detail when purchasing your flooring.

Can I use Swiffer wet pads on vinyl plank flooring?

If your flooring is waterproof, you can use a wet Swiffer safely, and can get a deeper clean than you'll get with a dry mop. Make sure that you use pads that feature a neutral household cleanser, rather than any harsh chemicals that could damage the flooring.

Can you put heavy appliances on vinyl plank flooring?

Since most furniture will not go under just one plank, it is perfectly safe for bulky furniture and refrigerators to go on vinyl plank flooring. Vinyl plank flooring will not be damaged or cracked by home appliances' weight due to its strong durability.

How do I know if I have water damage under my floor?

If sections of your floor feel bouncy or soft underfoot, it could indicate water damage beneath the surface. This is often caused by prolonged exposure to water that weakens the subfloor, which can lead to costly structural repairs if left untreated.

How to tell if mold is under vinyl flooring?

Smell. A musty odor is a tell-tale sign that mould may be growing beneath your vinyl flooring. This smell is distinctive, often described as earthy, like rotting wood or wet socks. If a specific area of your home starts to smell odd, especially around vinyl floors, it's time to investigate.

Will a one-time water leak cause mold?

A single water leak can lead to mold growth if not fixed quickly. Mold loves moist places and can start growing in 24 to 48 hours. Even small water damage can cause mold to grow. It's key to fix water damage fast to lower the water leak mold risk.

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