Can Mold Grow Under Vinyl Flooring On Concrete? (Solutions)

In this article, we are going to discuss, how to observe vinyl flooring to know if mold is growing on the concrete subfloor? And how to prevent mold from growing under vinyl flooring on concrete subfloor?”

Mold can grow under vinyl flooring on concrete. Most people who are buying a new house face this issue because they don’t know how to assess the subfloor’s condition.

You need to keep in mind a few points when buying a house with vinyl flooring installed on concrete. You must consider these points even if the vinyl flooring is newly installed.

One of the most critical points that people don’t pay attention to is how to treat concrete slabs before installing vinyl plank flooring.

Last but not least, we will have a look at “ways to fix a vinyl flooring with mold growing on the concrete below.” Give a read to the full article to have a 100% solution to your problem.

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Is Mold Dangerous?

Mold is not only unpleasant but also dangerous to health. This is why if you notice even slight growth of mold in your house then, you should get rid of it as soon as possible.

Many health problems can be caused by molds, such as allergic reactions, asthma, and lung damage. When mold spores grow, they release harmful organic toxins into the air, and it can cause respiratory problems.

Watery eyes, itchy eyes, sneezing, and coughing are all signs of growing mold under your vinyl flooring on concrete. So, get rid of them quickly.

How To Observe Vinyl Flooring To Know If Mold Is Growing On The Concrete Subfloor?

 Mold Grow Under Vinyl Flooring On Concrete

  1. Take a close look and spot the places with stains or dots having earth-like tones.
  2. Try to clean the spots with diluted bleach. If the spots/stains disappear and come back after some time, this indicates growing mold.
  3. Sniffing can also help you in indicating the growing mold. Sniff the ground, and if you smell anything like wet clothes, wet wood, or moisture, it can be a sign of water.
  4. See if people at your house have allergy symptoms that can be due to growing mold.
  5. The mold spores can be anywhere in the air, so check your closets and other nearby spaces for mold.

Another equipment that you can buy for examining moisture/humidity levels at your home’s “humidity tester.” It is cheap equipment that gives you an idea of how humid your surroundings are.

Once you have found an increased moisture level at your home, then this is the time to remove your vinyl plank to check how much area is affected by mold.

How To Prevent Mold From Growing Under Vinyl Flooring On a Concrete Subfloor?

Precaution is always better than cure. You need to ensure that all the precautionary measures are taken before installing vinyl flooring.

A professional installer considers this point and doesn’t install vinyl flooring on a wet concrete slab.

You can use a scraper to scrape off all the grown mold. Once the subfloor is cleaned and dry, you can now use sealers. There are epoxy paints and resins available in the market that can be used to prevent moisture from growing on concrete.

Install a good vapor barrier on top of all the concrete surfaces, and under the vinyl flooring cushion must be placed. After this, when the vinyl flooring is installed, you need to take extra moisture care.

All the necessary measures should be taken to prevent moisture/humidity from being present in the room. This includes making sure that vinyl planks are waterproof so that no water enters through them.

The proper drainage system of dishwashers and washing machines so that no water overflows from them and can reach inside vinyl planks in any way.

Ways To Fix A Vinyl Flooring With Mold Growing On Concrete Below

If you want to stop the growth of a mold from your concrete subfloor, then you need to get your hands on the tools below and follow some tips, which are as under:

  • Gloves
  • Safety goggles
  • Protective gear
  • Mask
  • Bleach
  • Vacuum cleaner
  • Dehumidifier

Start the process by finding out the area where the mold is growing. You have to use your protective gear and remove the vinyl plank.

You do not necessarily need to remove all the floor, but if you see the mold spreading under other vinyl tiles, you will have to remove extra tiles.

Remove the underlayment, if any, and start cleaning the concrete slab. For this purpose, bleach and a metal scrub can be used. It is also good to use any sanding equipment and clean off the surface.

Now, let the subfloor dry and make sure it has no humidity. A heat gun might be necessary over here for completely drying the concrete. Afterwards, you can apply sealer on top and then install your moisture barriers.

Your only goal is not only to clean the mold but also to prevent it from occurring. And for that purpose, you need to expand your budget by investing in a moisture barrier.

Buying a moisture barrier is necessary to prevent such incidents from happening again. You need to remove vinyl flooring to do that properly.

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Vinyl planks can be a significant investment, but they can ruin and start growing molds if exposed to water. You need to keep them safe and dry always.

Moisture caused by a large leakage can cause, i.e., flood, broken pipe, or water spill can also seep through the tiles and along baseboards. This builds moisture and results in mold.

Even a little water leak from the sink or bathroom can invite molds. Therefore, you must remove the molds from your home as soon as you notice them, and they are hazardous to your and your family’s health.

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