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How to Remove Water From Under Laminate Flooring?

Last updated October 31, 2026

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The short answer

Immediate Steps to Take

First, turn off the water source if a leak is active, and mop up any surface water with towels. Remove furniture and rugs from the area so you can access the flooring without causing more damage. If the laminate is swollen or buckled, do not force it back into place; that can crack the planks.

Next, check for standing water under the laminate by lifting a corner plank gently. Use a pry bar or flat screwdriver to pop the tongue-and-groove joints loose. Work from the wall outward to avoid breaking the locking mechanism. You may need to remove several rows to reach the water source.

Extract Water from the Subfloor

Once the planks are up, use a wet/dry vacuum to pull water off the subfloor and underlayment. If you do not have a wet vacuum, soak up the water with old towels, wringing them into a bucket. For large areas, a submersible pump can help if water has pooled underneath.

After extracting the visible water, place fans at floor level to circulate air across the subfloor. A dehumidifier also helps pull moisture from the air and the wood. Keep the area ventilated for several days, and check the subfloor for dampness with a moisture meter if you have one.

  • Remove baseboards and quarter round molding to lift planks
  • Use a wet vacuum or towels to soak up standing water
  • Set up fans and a dehumidifier to dry the subfloor
  • If underlayment is wet, remove and replace it
  • Check for mold growth on the subfloor before reinstalling

Dry the Laminate Planks

Laminate planks are made of compressed wood fibers, so they absorb water quickly and can swell permanently. Separate the planks and stand them on edge, leaning against a wall. Dry them with fans and a dehumidifier, but do not use heat, which can warp the boards.

Even after drying, planks may not fit back together if they have swollen. If the edges are raised or the boards feel soft, you will need to replace them. Compare the dried planks to new ones; if they are misshapen, discard them and buy replacements.

When to Replace the Subfloor

If the subfloor is plywood or OSB and it has been soaked, it may need replacement. Press on the subfloor with a screwdriver; if it feels spongy or crumbles, it is damaged. Also look for dark stains or a musty smell, which indicate mold or rot. In that case, cut out the damaged section and install new plywood.

If the subfloor is concrete, dry it thoroughly and check for cracks or efflorescence. Concrete can take weeks to dry, so use a dehumidifier and fans. If mold has started growing, you may need to treat the area with a mold-killing solution, but do not attempt this if you have health concerns; see a doctor if you feel unwell.

Prevent Future Water Damage

Find the source of the water and fix it before reinstalling flooring. Common causes are leaks from appliances, pipes, or a roof. If you live in Quincy, keep your shutoff valve location written down so you can stop leaks fast. Also, check the humid continental climate can bring coastal storms, so inspect your home for water entry points after heavy rain.

When you reinstall the laminate, use a new underlayment and leave expansion gaps around the edges. Wipe up spills immediately and avoid using a wet mop on laminate. For ongoing protection, consider using area rugs in high-moisture zones like kitchens and bathrooms.

  • Fix the leak source before reinstalling flooring
  • Use a new underlayment to protect against moisture
  • Leave expansion gaps to prevent buckling
  • Wipe spills immediately and avoid wet mopping
  • Check for water entry points after heavy storms

Water damage does not wait

Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

Can I dry laminate flooring with a hair dryer?

No, heat can warp laminate planks. Use fans or a dehumidifier to dry them slowly at room temperature. If the planks have swollen, they will not shrink back, so you may need to replace them.

How long does it take for subfloor to dry?

It depends on the material and humidity. Plywood may dry in a few days with fans, while concrete can take weeks. Use a moisture meter to check if the subfloor is dry enough for new flooring.

Will my insurance cover the damage?

Policies vary, and your insurer decides what is covered. Check your policy for water damage clauses and document the damage with photos. Contact your insurance company to discuss your situation.

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