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161. moisture testing laminate flooring - what you need to know

Protect Your Laminate Flooring: How to Test for Moisture Levels

Moisture is one of the biggest threats to laminate flooring, as excess moisture can lead to warping, swelling, and mould growth. Testing laminate flooring for moisture helps you detect problems early and prevent costly damage. Whether you’re installing new laminate or checking an existing floor, here’s how to test for moisture effectively, the tools you’ll need, and tips for keeping your floors safe.

Why Moisture Testing is Important for Laminate Flooring

Laminate flooring is sensitive to moisture, and even small amounts can cause significant issues over time. When laminate absorbs moisture, it can swell and lose its shape, which may result in lifting or buckling. In some cases, high moisture levels can also lead to mould growth, especially if moisture is trapped under the floor. By testing for moisture, you can catch these problems before they become major concerns and ensure that your floor stays in excellent condition.

Tools Needed for Testing Moisture in Laminate Flooring

Testing laminate flooring for moisture is straightforward if you have the right tools. Here’s what you’ll need:

  • Moisture Meter: The most accurate way to measure moisture in flooring is with a moisture meter. Look for a pinless (non-invasive) meter, which can measure moisture without puncturing the floor’s surface.
  • Plastic Sheet or Ziploc Bag: If you don’t have a moisture meter, the plastic sheet test is a DIY alternative to gauge moisture levels.
  • Masking Tape: Use this to secure the plastic sheet or bag to the floor for the DIY test.

Methods for Testing Moisture in Laminate Flooring

There are two common methods to test laminate flooring for moisture: using a moisture meter or performing the plastic sheet test. Here’s how to do each method:

1. Using a Moisture Meter
A moisture meter is the most reliable way to test moisture levels in laminate flooring.

  • Step 1: Power on the moisture meter and set it to the appropriate mode for wood or laminate flooring.
  • Step 2: Place the meter flat on the surface of the laminate and press gently.
  • Step 3: Read the moisture level on the display. Ideal moisture levels for laminate are generally below 12%, but check the manufacturer’s guidelines for specific recommendations.
  • Step 4: Test multiple areas of the room, particularly near windows, doors, and other high-risk moisture spots.

2. The Plastic Sheet (or Ziploc Bag) Test
The plastic sheet test is a simple, DIY way to gauge if there’s moisture coming up from beneath the floor.

  • Step 1: Place a clear plastic sheet or Ziploc bag flat on the laminate surface in an area you suspect may have moisture.
  • Step 2: Secure the edges of the plastic with masking tape to create an airtight seal.
  • Step 3: Leave the plastic sheet undisturbed for 24 hours.
  • Step 4: After 24 hours, check the underside of the plastic. If there’s condensation on the plastic or the floor appears darker, there may be moisture present.

Understanding Moisture Levels in Laminate Flooring

Knowing the acceptable moisture levels for laminate flooring is essential to determine whether action is needed. For most laminate floors, moisture levels should be below 12%. Anything higher may indicate an issue, such as moisture seeping up from the subfloor or high humidity in the room.

  • Normal Levels (Below 12%): The floor is within a safe moisture range.
  • Moderate Levels (12-16%): Monitor these areas closely, as there’s a slight risk of moisture damage.
  • High Levels (Above 16%): Moisture is too high, and immediate action is required to prevent damage.

How to Address High Moisture Levels

If testing reveals high moisture levels, it’s essential to address the issue promptly to protect your laminate flooring. Here are some steps to consider:

1. Improve Ventilation
Poor ventilation can contribute to high indoor humidity. Use exhaust fans, open windows, or run a dehumidifier to improve air circulation and control moisture levels.

2. Use a Dehumidifier
In areas with high humidity, especially basements or bathrooms, a dehumidifier can help maintain ideal moisture levels. Set it to maintain humidity between 40-60% for best results.

3. Address Subfloor Moisture Issues
If moisture is seeping from the subfloor, it may be necessary to install a moisture barrier, especially if your laminate is installed over concrete. Moisture barriers can help prevent moisture from rising into the laminate, reducing the risk of damage.

4. Fix Any Leaks or Spills Promptly
Water leaks or spills should be cleaned up immediately. Check for any plumbing issues, as undetected leaks can lead to significant damage over time.

Conclusion

Testing laminate flooring for moisture is a crucial part of maintaining a safe and healthy environment for your floor. With a moisture meter or a simple plastic sheet test, you can quickly identify problem areas and take steps to reduce moisture levels if necessary. By keeping moisture in check, you’ll help your laminate floor last longer and stay in excellent condition, free from warping, buckling, or mould growth.

Easipay Carpets can help you get brand new flooring without the high up-front cost – by simply letting you spread the cost of the flooring over time instead. There’s no interest on our plans so you aren’t spending a penny more than you would buying it outright and we include underlay, door trims, carpet grippers and laminate beading for free. Prices start from just £10 per week! 

It starts with a free home appointment and quote, to get booked in at a time that suits you, tap the “Get Started” button below and fill out the contact form!

Still Got Questions? Here's 10 FAQs!

Laminate flooring typically requires moisture levels below 12% for safe installation and use.

Testing once every few months, or whenever you notice signs of moisture, can help prevent damage.

Excess moisture can cause warping, buckling, swelling, and even mould growth if not addressed.

 

A moisture meter provides the most accurate results, but a plastic sheet test can be used as a DIY alternative.

Yes, a dehumidifier can control indoor humidity, helping to prevent moisture build-up in laminate flooring.

Regular moisture testing, proper ventilation, and using a moisture barrier during installation are key steps.

No, steam mops introduce excess moisture and heat, which can damage laminate flooring.

High humidity can cause laminate to absorb moisture, leading to expansion, warping, and lifting.

While not as precise as a moisture meter, a plastic sheet test can indicate potential moisture issues.

Use a dehumidifier, improve ventilation, and inspect for any leaks or moisture seeping from the subfloor.

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