What happens if my LVP (luxury vinyl plank) gets water underneath it from a spill?

Small spills that get underneath LVP typically aren't a major concern if addressed quickly, but standing water can cause problems depending on your subfloor type and how the flooring was installed.

Immediate water intrusion from spills usually happens at seams, around transitions, or near walls where the planks meet. Quality LVP has tight locking mechanisms that resist water penetration, but no floating floor is completely waterproof at the seams. If you notice water has gotten underneath, the first step is to clean up the surface water immediately and use fans or dehumidifiers to promote air circulation.

The bigger concern is your subfloor material. If you have a concrete subfloor, small amounts of water underneath LVP will typically dry out without damage. However, if you have a wood subfloor (plywood or OSB), trapped moisture can cause swelling, warping, or mold growth. This is why proper installation includes moisture barriers and ensuring your subfloor is completely dry before installation.

Signs that water damage may be occurring include planks that feel spongy underfoot, visible gaps opening between planks, musty odors, or planks that start to lift at the edges. In Ottawa's climate, with our freeze-thaw cycles and varying humidity levels, it's especially important to address moisture issues quickly before they worsen.

Prevention is key - ensure your LVP installation includes proper transitions at doorways, quarter-round molding sealed against the wall, and quality underlayment with moisture barrier properties. Most professional installations in Ottawa include these moisture protection measures as standard practice.

If you're experiencing recurring water issues or notice signs of subfloor damage, it's worth having a flooring contractor assess whether sections need to be lifted and reinstalled. For a professional evaluation of water damage or proper LVP installation with moisture protection, Ottawa Floor Install can assess your specific situation.

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