When it comes to flooring, few things cause more damage than water. Whether it’s a burst pipe, a dishwasher leak, or just over-mopping, excess moisture can permanently affect the look and structure of your floorboards.
To put this to the test, we submerged four popular flooring types — timber, engineered oak, laminate, and hybrid — under water for a full seven days.
While most homeowners will never face a week-long flood, the experiment reveals how each material reacts to prolonged exposure, helping you understand which type best suits your property and lifestyle.
The experiment
Four different floorboard samples were submerged in water for seven days:
- Timber (Blackbutt hardwood)
- Engineered European oak
- Laminate (HDF core)
- Hybrid (WPC – wood plastic composite)
The aim was simple — observe how each material handles saturation, discolouration, and structural changes over time.
After seven days, the boards were removed, inspected, and set aside to dry for another week to assess how much they recovered.
Timber flooring: natural beauty, natural limits
Timber has long been loved for its warmth and character, but it’s also one of the most vulnerable flooring types when it comes to water.
After seven days underwater, the Blackbutt timber board was almost unrecognisable. The once-light surface turned dark and patchy, with visible black stains running through the grain.
Those stains weren’t on the surface — they formed under the protective coating, meaning the moisture had penetrated from the sides and base.
Signs of water damage in timber floors:
- Black or grey staining under the coating
- Slight warping or “cupping” (edges raised higher than the centre)
- Cracks forming along the joints
- Dull or cloudy finish
If you see dark marks that don’t wipe away, it’s a sign moisture is sitting below the surface, slowly breaking down the timber fibres.
Even with professional drying, timber rarely returns to its original condition. In this test, the board was permanently darkened and the finish cracked, confirming that timber floors and water simply don’t mix.
Engineered European oak: elegant but exposed
Engineered oak, made from a veneer of natural timber bonded to layers of plywood, performed slightly better than solid timber — but still suffered major damage.
Both the submerged and “dry” sides absorbed water, with the veneer darkening and the edges swelling. Every tiny scratch or gap in the coating became a pathway for moisture.
Key takeaway: Any imperfection in a timber veneer can act like an entry point for water. Once it gets in, staining and separation can occur quickly.
In a real-world scenario, these results reflect what might happen after a few years of regular over-mopping — not just a flood. Gradual exposure to water, even in small amounts, can produce the same dark stains and cupping seen in the test.
If you notice early signs of water ingress, it’s best to call a professional to assess whether refinishing or partial replacement is needed.
Laminate flooring: durable surface, weak core
Next was laminate flooring, made from a high-density fibreboard (HDF) core with a laminated surface. The top layer looked surprisingly intact after seven days — but the real damage was underneath.
The board had swollen and softened along its edges, where the HDF core absorbed water. Once laminate swells, it typically never returns to shape, leaving a permanent lift or ripple along the joins.
Interestingly, the laminated coating stayed in good condition, showing how effective that top layer is at resisting direct surface moisture. However, the core beneath it — the structural foundation — was compromised.
In short: Laminate floors are highly resistant to spills on the surface but vulnerable to prolonged moisture around the joins.
Once water seeps beneath the boards, swelling is almost inevitable. In this test, the laminate earned second place overall for surface durability, but lost points for structural weakness.
Hybrid flooring: the clear winner
Finally, the hybrid flooring (WPC) sample — made from a waterproof composite of plastic and wood fibres — came out looking almost new.
Even after seven days underwater, the board showed no swelling, staining, or delamination. The only visible marks were minor scratches from earlier drop tests.
Because hybrid flooring contains no organic timber core, there’s nothing to absorb water. That makes it one of the few flooring options truly suitable for wet areas like kitchens, laundries, and even bathrooms.
Result: Hybrid flooring was the only sample that maintained its original structure and appearance — making it the clear winner of the 7-day water test.
What happens after drying?
After being left to dry for another week, the results became even clearer:
|
Flooring Type |
After 7 Days in Water |
After Drying |
|
Timber |
Severe black staining, surface cracks |
Cupping and discolouration remained |
|
Engineered Oak |
Fully soaked, darkened, stained |
Warping continued as it dried |
|
Laminate |
Swollen edges, intact surface |
Edges stayed raised, core soft |
|
Hybrid (WPC) |
No damage visible |
Retained original appearance |
While some timber boards slightly flattened out as they dried, the staining and structural damage didn’t reverse. Hybrid flooring, on the other hand, looked almost identical before and after drying — proving its water resistance beyond doubt.
What this means for your property
This test wasn’t about promoting one product — it was about understanding real-world resilience.
Most homeowners won’t ever submerge their floors for a week, but minor water exposure happens constantly — cleaning, spills, or leaks near appliances.
Here’s what the test reveals for property owners:
- Solid and engineered timber floors look stunning but need careful maintenance. Use minimal water when cleaning and deal with leaks immediately.
- Laminate flooring offers durability at a lower cost but isn’t ideal for wet zones.
- Hybrid flooring provides the best of both worlds — realistic timber appearance with water resistance that’s perfect for Australian homes.
Preventing water damage in everyday life
Even if your flooring isn’t hybrid, you can take practical steps to reduce the risk of water damage:
- Wipe spills immediately — don’t let moisture sit.
- Use mats near entryways and under sinks.
- Avoid steam mops or overly wet cleaning methods.
- Check your dishwasher, washing machine and fridge for leaks regularly.
- Maintain a consistent indoor temperature and humidity level to reduce expansion and contraction.
These small actions can extend the life of your floors and preserve their appearance.
Final verdict: hybrid floors lead the way
While every flooring type has its strengths, this seven-day test makes one thing clear: hybrid floors are the most water-resistant and low-maintenance option currently available.
Timber and engineered floors remain beautiful, natural choices — but they demand care and respect for their limitations.
Laminate is a practical middle ground, performing well under surface stress but vulnerable to prolonged moisture.
Hybrid flooring, with its composite construction, stands out for resilience and stability — even in extreme conditions no household should face.
