How to dry up water under vinyl flooring

How to Dry Up Water Under Vinyl Flooring

It’s always a bit of a sinking feeling (no pun intended) when you realise there’s water under your vinyl flooring. Whether it’s from a burst pipe, a leaking washing machine, or a spill that didn’t get cleaned up in time, trapped moisture under vinyl can turn into a real headache if ignored. I’ve dealt with this personally, and if you’re in the same boat, here’s what worked for me — step-by-step.

Start With the Obvious: Where’s the Water Coming From?

Before doing anything else, stop the source of the water. If it’s a leak from an appliance, pipe, or even a window, fix that first. There’s no point drying things out just to have it happen again a few days later.

In my case, it was a slow leak under the fridge. I didn’t notice it until the flooring started to bubble slightly. If you see that happening — or feel squishiness underfoot — it’s probably moisture.

Clear the Area

Move any furniture or rugs out of the way so you’ve got space to work. Vinyl doesn’t breathe, so any moisture trapped underneath won’t dry on its own. You'll need access to lift it, or at least to the seams.

Carefully Lift the Vinyl

This part depends on how your flooring was installed. If it's click-lock vinyl planks (floating floor), you can usually pop them up starting from a wall edge. Take your time. Use a flat tool like a paint scraper to lift the edges gently.

If it’s glued down — especially sheet vinyl — it’s a bit more work. You may have to cut out the affected section and plan to patch it later.

Get the Water Out

I used a shop vac (wet/dry vacuum) to remove as much water as possible. Towels work too if you don’t have one. Press them down firmly to absorb anything that’s soaked into the subfloor.

Once that’s done, I set up a couple of fans and a dehumidifier in the room. You want constant air movement. If the weather’s dry, crack a window too.

Leave everything running for at least 24–48 hours. Check the subfloor with your hand — it should feel completely dry, not even cool or slightly damp.

Inspect the Subfloor

This is important. If you see any signs of mould, or the wood feels soft or smells off, you might have to replace that section. I was lucky — my subfloor was still solid after drying, but I know people who’ve had to rip out half the room.

Reinstall or Replace the Vinyl

Once everything’s dry, reinstall the planks you lifted. If some pieces got warped or damaged, you might need to replace them. This is why it’s good to keep a few extra planks after installing vinyl — something I learned the hard way.

Seal the edges, especially in bathrooms or laundry areas, using waterproof sealant to prevent future issues.

Final Thoughts

This isn’t a fun job, but it’s definitely manageable if you catch it early. Take your time, dry everything thoroughly, and don’t take shortcuts — moisture left behind can lead to mould and more expensive repairs down the line.

As seen in the Manchester Evening News and the Independent.