The short answer
How Ocean Water Rises
When strong winds push ocean water toward the shore, the water level can rise well above normal tides. This surge of water can move inland and does not need a direct hit from the storm to reach your building. Surge depth depends on the storm's strength, the shape of the coastline, and the slope of the land.
For a store, the floor is the first thing at risk. Surge water can enter through door thresholds, loading docks, floor drains, or even small gaps in the foundation. Once inside, the water spreads across the slab or subfloor, soaking carpet, wood, or tile adhesive. The longer the water sits, the deeper it penetrates into the structure.
- Check your store's elevation relative to nearby water bodies
- Look at local flood zone maps from your city or county
- Identify entry points like doors, vents, and utility line openings
- Know the difference between surge water and inland flooding from heavy rain
- Consider how far inland surge water has reached in past storms
- Review your lease or property records for flood history
Signs Water Has Reached Your Floor
You might not see standing water right away. Surge water can seep under baseboards or through cracks in a concrete slab, leaving the surface dry while moisture soaks the padding underneath. Look for damp spots, a musty smell, or buckling in wood or laminate planks. These are early clues that water has touched the floor.
If the surge recedes quickly, the floor may still hold moisture in hidden layers. Use a moisture meter if you have one, or press a plastic sheet against the floor overnight to check for condensation underneath. Any sign of dampness means the flooring material and the subfloor need attention before mold sets in.
What to Do Right After Surge Water Enters
Act quickly, but do not walk into standing water if you suspect electrical hazards. Turn off power to the store at the breaker panel if it is safe to reach. Remove loose items from the floor, including boxes, displays, and furniture legs that can wick water upward. Open windows and doors to let air move through the space.
Do not try to dry the floor with heat right away, as that can warp wood or make adhesive release. Instead, use fans and dehumidifiers to pull moisture out slowly. If the water came from the ocean, it carries salt and contaminants that can leave residue on surfaces. That residue needs cleaning, not just drying.
- Turn off electricity if it is safe to do so
- Lift and move any items sitting directly on the floor
- Open windows and doors to increase airflow
- Use fans and dehumidifiers to dry slowly
- Do not use heaters directly on wet flooring
- Wear gloves and boots if the water may be contaminated
When to Call Local Water Damage Pros
Some water is manageable with a mop and fans, but surge water often brings more than you can handle alone. If the floor is soaked through to the subfloor, or if the water sat for more than a day, the structure may need professional attention. Local water damage pros can assess how far the moisture has spread and what materials are salvageable.
The work usually involves extracting standing water, pulling up damaged flooring, and drying the structure with specialized equipment. In some cases, the floor can be saved; in others, sections need replacement. The pros will tell you what they find and what the next steps look like, but the decision on repairs rests with you.
Preparing Your Store for Future Surges
If your store is in a surge-prone area, think about what you can change before the next storm. Raising valuable inventory off the floor, installing flood-resistant barriers at doorways, and sealing cracks in the foundation can reduce damage. Keep a written plan for shutting off power and moving items to higher ground.
If you live in Redmond, keep your shutoff valve location written down. Your local building codes may also have rules about flood-proofing commercial spaces. Review your insurance policy to understand what types of water damage are covered. Policies vary, and your insurer decides what is covered.
- Elevate shelves and equipment above likely water levels
- Install backflow valves on floor drains if allowed
- Seal gaps around pipes and cables entering the building
- Keep a battery-powered sump pump ready if your store has a basement
- Store important documents in waterproof containers
- Review your flood insurance coverage each year
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (425) 407-5186Frequently asked questions
How much surge water does it take to damage a store floor?
Even a quarter inch can ruin carpet padding or cause wood planks to swell. More than an inch often reaches the subfloor. The damage depends on the flooring material and how long the water stays.
Can surge water come up through a concrete slab?
Yes, if the slab has cracks or is not sealed, water can push up from the soil below. Hydrostatic pressure forces moisture through tiny openings. A vapor barrier under the slab helps, but it is not always present.
Should I wait for the surge to recede before checking the floor?
No, check as soon as it is safe to enter. The longer water sits, the more it soaks in. Move items off the floor and start drying right away, even if water is still receding outside.