The short answer
How Water Gets Under LVP
Luxury vinyl plank flooring is designed to resist moisture on its surface, but it is not completely waterproof. Water can find its way through the seams between planks, especially if they are not tightly locked together. Spills that sit for a long time, or water from a leaky appliance, can gradually seep into those tiny gaps.
The edges of the room are another entry point. LVP is usually installed with a small expansion gap around the perimeter, which is covered by baseboards or transition strips. If water pools near a wall or a doorway, it can travel under the flooring through that gap. Even a small amount of water can become a problem if it is not dried quickly.
- Check seams regularly for gaps or lifting
- Wipe up spills immediately
- Inspect baseboards and transitions for gaps
- Keep appliances like dishwashers and refrigerators dry underneath
- Use floor mats in entryways and near sinks
- Look for signs of water damage like warping or discoloration
What Happens When Water Gets Underneath
Once water is trapped under LVP, it does not evaporate easily because the flooring acts as a barrier. The moisture can soak into the subfloor, which is often plywood or OSB. Over time, that can cause the subfloor to swell, warp, or rot, leading to structural issues that go beyond the flooring itself.
Trapped moisture also creates an ideal environment for mold and mildew to grow. You might notice a musty smell or see dark spots on the flooring or along the edges. If the water came from a clean source, the risk is lower, but any standing water under the floor can cause problems. If you suspect water is trapped, it is important to address it quickly.
What to Do If Water Is Under Your Floor
If you discover water under your LVP, remove as much of the flooring as needed to let the area dry. This is not always easy, and LVP can be difficult to remove without damaging it. In many cases, you will need to take up the planks in the affected area and possibly some of the surrounding ones to allow air to reach the subfloor.
After removing the flooring, dry the subfloor thoroughly using fans or a dehumidifier. If the subfloor is swollen or rotted, it may need to be replaced. This is where local water damage pros can help. They have the equipment to dry and inspect the area, and they can advise on whether the subfloor needs repairs. If you live in Layton, keep the number of a reliable water damage service handy.
Preventing Water Intrusion in the Future
Preventing water from getting under your LVP is easier than dealing with the aftermath. Wipe up spills as soon as they happen, and use mats in areas where water is likely to be tracked in. Make sure the gaps around pipes and under sinks are sealed, and check appliance connections for leaks regularly.
In areas prone to moisture, like kitchens and bathrooms, consider using a waterproof underlayment or a vapor barrier beneath the LVP. This adds a layer of protection if water does get through the seams. Also, keep the humidity in your home at a moderate level to reduce the chance of moisture building up under the floor. If a leak occurs, act quickly to dry the area before it becomes a bigger problem.
- Seal gaps around pipes and under sinks
- Use waterproof underlayment in high-moisture areas
- Check appliance hoses and connections monthly
- Keep indoor humidity between 30 and 50 percent
- Inspect flooring after any water incident
- Know where your main water shutoff valve is
Water damage does not wait
Phones are answered 24/7 for Layton and nearby communities.
Call Now (801) 383-0232Frequently asked questions
How long does it take for water to damage LVP?
LVP itself can handle moisture for a short time, but water trapped underneath can damage the subfloor within days. If you notice a leak or spill, dry the area immediately. The longer the water sits, the greater the risk of warping, mold, and subfloor rot.
Can I dry water under LVP without removing the flooring?
In some cases, you can use a wet vacuum and fans to dry the edges, but trapped water usually requires lifting the planks. Without removal, moisture can linger and cause mold. For large areas, the pros can help extract water and dry the subfloor effectively.
Will my insurance cover water damage to LVP?
Policies vary, and your insurer decides what is covered. Water damage from sudden leaks is often covered, but gradual damage may not be. Check your policy for details, and document the damage with photos. If you have questions, contact your insurance company directly.