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How Do I Prevent Water Entry After Storm Damage?

Last updated October 31, 2026

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The short answer

Start with a Safe Survey

After a storm, your first step is a careful visual inspection from a safe position. Do not climb onto a wet or damaged roof. From the ground, look for missing shingles, sagging roof sections, or debris punctures. Check windows for broken glass and frames for gaps. Also, note any downed tree limbs that could have caused damage to your siding or roof.

Walk around your property's perimeter. Look for pooling water against the foundation, which can seep in through cracks. Ensure your gutters and downspouts are clear of leaves and branches, as clogs cause water to overflow and soak into walls. If you have a basement or crawlspace, check the exterior walls for new moisture or signs of water intrusion from the saturated ground.

Apply Emergency Temporary Covers

For visible roof holes or broken windows, you need a temporary barrier. Heavy-duty tarps, secured with wooden battens or sandbags, are effective for roofs. Cover the damaged area completely, extending the tarp over the roof's peak to prevent wind from lifting it. For broken windows, use plywood cut to fit the opening, fastened securely from the outside.

Do not use plastic sheeting alone, as wind can tear it. Your goal is to create a water-shedding surface until a permanent repair can be made. If water is seeping under doors, use towels and sandbags to create a dam. These temporary measures are crucial to stop the immediate flow of water into your living spaces.

  • Use heavy-duty, waterproof tarps, not thin plastic sheets.
  • Secure tarps with wooden strips screwed into solid roof sheathing.
  • For windows, cut exterior-grade plywood to size and screw it into the frame.
  • Place sandbags against door thresholds and basement window wells.
  • Clear debris from roof valleys and gutters before placing covers.
  • Check seals around vents and chimneys; use roofing cement for small gaps.

Address Interior Plumbing Leaks

Storms can stress plumbing systems. Check under sinks, around toilets, and near your water heater for new drips or moisture. A sudden drop in water pressure after a storm can indicate a broken pipe. Know the location of your main water shutoff valve and turn it off if you find a significant leak. This prevents pressurized water from worsening the damage.

Also, inspect appliances like your washing machine, dishwasher, and refrigerator ice maker. Hoses can fail under pressure changes. If your area in Federal Way experiences power surges during storms, it can affect appliance water valves. Shutting off the water supply to individual appliances is a good precaution if you suspect a problem until a plumber can perform a thorough inspection.

Manage Groundwater and Foundation Seepage

Persistent rain saturates the soil, increasing hydrostatic pressure against your foundation. Water can then seep through cracks or porous concrete. If your basement or crawlspace is taking on water, use a wet-dry vacuum to remove standing water. For a crawlspace, ensure your vapor barrier is intact and consider using a portable pump if flooding is recurrent.

Improving drainage away from your home is a long-term solution, but after a storm, focus on diversion. Extend downspouts at least five feet away from the foundation using splash blocks or temporary extensions. If water pools in specific spots, you may need to dig a shallow trench to channel it away. This reduces the immediate hydraulic pressure on your basement walls.

When to Seek Professional Help

If you cannot safely access the damage, if the leak is extensive, or if water has entered electrical systems, stop and contact local water damage pros. They have the equipment and expertise for safe water extraction and structural drying. Attempting complex roof repairs or entering flooded areas with live electricity poses serious safety risks.

  • Stop if you see sagging ceilings, exposed wiring, or smell gas.
  • Professionals use moisture meters and thermal cameras to find hidden water.
  • They set up industrial air movers and dehumidifiers for proper drying.
  • Delayed drying can cause mold growth within 24 to 48 hours.
  • They can advise on necessary repairs to building materials.
  • An inspection report can be useful for your insurance adjuster.

Talk to someone now

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

How long do I have to prevent mold after water entry?

Mold can begin growing within 24 to 48 hours in damp conditions. Your priority is to stop the water source and dry the area completely as fast as possible. Remove wet items, increase ventilation, and use fans. For large areas or hidden moisture, professional drying is often necessary to prevent a mold problem.

Will my homeowner's insurance cover storm water damage?

It depends on the source of the water. Damage from wind-driven rain entering through a damaged roof is often covered. Flooding from ground water or overflowing bodies of water typically requires separate flood insurance. Policies vary, and your insurer decides what is covered. Always document the damage and contact your insurance company promptly.

What should I do if water damaged my drywall or ceiling?

If drywall or plaster is sagging or soaked, it often needs to be removed to dry the cavity behind it. Wet drywall loses its structural integrity and can harbor mold. A water damage professional can assess what materials can be dried and what must be replaced for a safe repair.

Call Now (253) 785-9361