How long does it take for water to damage laminate?

Author: Prof. Jake Glover Sr.  |  Last update: Sunday, July 12, 2026

Though laminate flooring industry specifications dictate tests for laminate flooring and water where the flooring is submerged under water for a full day, irreversible damage happens long before that. Laminate flooring with open edges will maintain its original dimensions for a few hours after submerged water exposure.

How long does it take for water to damage laminate flooring?

It takes 24 to 48 hours for large amounts of water to cause damage to flooring, making it crucial to act fast to prevent mold growth and further damage.

What happens if water gets under laminate?

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.

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

It only takes as little as 24 hours for mold to start growing under wet laminate flooring, if the water is dirty, it has come from a dishwasher, outside groundwater, a toilet or dirty carpet it can start growing bacteria even quicker, in as little as 12 hours.

How long is laminate water resistant?

Laminate flooring with a 15% swell rate is designed to resist moisture for a shorter duration. While it may provide waterproofing for a certain period, it's essential to understand the limitations. Typically, these floors can withstand water exposure for 24 to 48 hours.

Why you should tear out water damaged laminate flooring

Can laminate flooring be 100% waterproof?

Each type of laminate flooring offers a specific level of water resistance, but none are entirely impervious to moisture. Even waterproof laminate can fail if exposed to standing water or flooding for extended periods. Choosing the right option depends on the room's moisture levels and your daily lifestyle needs.

What is the life expectancy of laminate flooring?

On average, you can expect laminate flooring to last anywhere from 15 to 25 years. However, the actual lifespan of your laminate floors can vary depending on several factors, including the quality of the product, the installation, the level of foot traffic, and the maintenance routine.

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.

How do I know if there is mold under my laminate flooring?

If you notice a persistent musty odor in a room, it could be a sign of mold growth beneath the flooring. Discoloration or stains: Look for any discoloration, warping, or stains on the surface of the laminate flooring. Water damage caused by mold growth can lead to changes in the appearance of the flooring material.

How to fix a water damaged swollen laminate floor?

To repair minor swelling issues, complete the following steps:
  1. Dry out the affected area: Use a dehumidifier to drain the excess moisture from the air. ...
  2. Apply weight to the floor: Once the area has started to dry, place heavy items, such as books, on top of the affiliated planks.

What does water damaged laminate look like?

Use a flashlight, shining the beam at an angle to the planks, to be able to see color changes better. Aside from discoloration in the flooring installation, damage from water can cause planks to become loose. Over time, warping and buckling is an issue as well, due to excess moisture.

Can mold grow on top of laminate flooring?

Mold can cause discoloration or warping of laminate flooring. If you observe changes in the color or shape of the laminate planks, it may indicate moisture-related issues and potential mold growth.

How do you save water damaged laminate flooring?

How to Repair Laminate Flooring
  1. You can invest in a laminate repair kit.
  2. Dry the wet area with a dehumidifier.
  3. Minor bubbles can be burst to remove them. Firstly, place a damp cloth over the bubble. Use a knife to cut a slit in the area. ...
  4. In some cases where the damage is too large you will need to replace the plank.

Will water under laminate dry out?

Depending on the amount of water and the ventilation in the room, it can take several hours to a few days for laminate flooring to dry completely.

How fast can water damage floors?

Usually, it will take at least an hour or a full day for water damage to occur. If your house is affected by water damage, the three things that will develop quickly are mold growth, structural damage, and damage to your furniture or electronic appliances.

What does subfloor mold look like?

Subfloor mold can appear as dark spots or patches beneath flooring materials like carpets, vinyl, or laminate. It often grows on plywood or OSB substrates, common since the 1950s. The presence of subfloor mold can be hinted at by a musty odor.

What kills mold on laminate flooring?

Scrub the affected area with a mixture of hot water and soap. Use an appropriate mold and mildew cleaner to disinfect the area. You can also use a diluted bleach solution (mix 1 cup of bleach in 1 gallon of water). Spray this cleaning solution directly onto the moldy floor and allow it to sit for 10 to 15 minutes.

How to tell if water is under a laminate floor?

If your laminate floor feels soft and spongy under your feet, this is one of the major signs that your floor has been water damaged. This is because when a laminate floor gets damaged by water, the underlying plywood will absorb moisture and swell, making the floor feel spongy.

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.

How fast does mold grow after water damage?

mildew and mold will develop within 24-48 hours of water exposure. Even worse, it will continue to grow until steps are taken to eliminate the source of moisture, and effectively deal with the mold problem. Use the diagram on the facing page to assess the extent of mold in your home.

What are signs of mold sickness?

Although symptoms can vary, the most common symptoms seen in people exposed to mold indoors include:
  • Nasal and sinus congestion.
  • Eye irritation, such as itchy, red, watery eyes.
  • Wheezing and difficulty breathing.
  • Cough.
  • Throat irritation.
  • Skin irritation, such as a rash.
  • Headache.

Does home insurance cover mold?

Homeowners insurance doesn't usually cover mold damage or removal unless it's the result of a covered peril. If the mold in your residence was caused by something sudden or accidental, such as a bursting pipe or some other covered incident on your policy, you may be protected.

Is it expensive to replace laminate flooring?

Labor. Labor accounts for a substantial portion of the overall cost to install laminate flooring, which runs $4 to $8 per square foot. For a typical 200-square-foot project, which costs between $1,500 and $3,500, you could expect to pay around $1,000 to $2,000 for the installers.

What is the downside to laminate flooring?

Not moisture-proof

Being made of wood, laminate flooring is not impervious to the effects of moisture. Therefore, it's not suitable as a hard flooring for bathrooms and should be used with caution in kitchens or laundries. Light surface water for cleaning shouldn't cause issues, but saturation must be avoided.

What will damage laminate flooring?

Laminate flooring, while cost-effective and popular, can experience problems such as buckling, warping, and fading. These issues often arise from water damage, prolonged exposure to sunlight, and inherent design limitations.

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