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How Do I Prevent Water Damage From Happening in My Home?

Last updated October 31, 2026

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The short answer

Know Your Water Shutoff Valves

Locate all water shutoff valves in your home. Find the main shutoff valve, which is usually near where the water line enters your house or in the basement. If you live in Baltimore, keep your shutoff valve location written down. Also, know the individual shutoff valves for sinks, toilets, and major appliances like your washing machine. This knowledge lets you stop the flow of water instantly during a leak.

Test these valves annually to ensure they turn easily. A stuck valve is useless in an emergency. Gently turn the valve clockwise to close it and counterclockwise to open it. If it is stiff, do not force it. A plumber can service it. Marking each valve with a tag can help others in your household find and operate them quickly.

Maintain Appliances and Plumbing

Inspect washing machine hoses every few months for bulges, cracks, or brittleness. Replace rubber hoses with braided stainless steel ones, which are less likely to burst. Check under your refrigerator for the water supply line to the ice maker, as these small lines can also develop slow leaks. Do not ignore a dripping faucet, as it can indicate worn internal washers or seals.

Protect Your Home's Exterior

Your roof is your first defense against rain and snow. Inspect it twice a year for missing, cracked, or curling shingles. Check the flashing around chimneys, vents, and skylights for gaps. Clean your gutters and downspouts in the spring and fall to prevent clogs. Ensure downspouts extend at least five feet away from your foundation to direct water away from your home.

Examine the exterior walls and foundation for cracks where water could seep in. Seal any gaps around windows and doors with caulk. Grade the soil around your foundation so it slopes away from the house. This prevents water from pooling next to the basement walls. Managing exterior moisture is important in many climates to prevent water intrusion.

  • Clean gutters and downspouts each spring and fall.
  • Inspect your roof for damaged shingles twice a year.
  • Ensure downspouts extend 5 feet from the foundation.
  • Seal cracks in the foundation and exterior walls.
  • Grade soil to slope away from your home.
  • Check window and door seals annually and re-caulk as needed.

Monitor for Internal Leaks

Install water leak alarms near potential trouble spots like under sinks, behind the toilet, and by the water heater. These inexpensive devices sound an alarm when they detect moisture. For a more integrated system, consider smart water sensors that can send alerts to your phone. Regularly check under cabinets for any signs of dampness, discoloration, or a musty smell, which often point to a hidden leak.

Monitor your water bill for unexpected increases. A consistently higher bill with no change in your habits can signal a hidden leak in a supply line. Listen for the sound of running water when all fixtures are off. If you hear it, you may have a leak behind a wall or under a slab. Early detection is crucial for preventing major damage.

Seasonal and Vacation Preparedness

Before leaving for an extended vacation, take specific precautions. Shut off the main water supply to your house. This is the single most effective step to prevent a catastrophe while you are away. Also, drain your plumbing lines by opening faucets at the highest and lowest points in your home. Ask a neighbor to check on your property periodically for any visible issues.

Prepare for winter by disconnecting and draining outdoor hoses. Insulate pipes in unheated areas like basements, attics, and garages. During very cold spells, let a trickle of water run from faucets served by pipes on exterior walls. This keeps water moving and reduces the chance of a pipe freezing and bursting, which is a common cause of severe water damage.

  • Shut off the main water valve before a long trip.
  • Drain plumbing lines after shutting off the water.
  • Disconnect and store outdoor hoses before winter.
  • Insulate pipes in attics, basements, and crawlspaces.
  • Let faucets drip during extreme cold to prevent freezing.
  • Have a neighbor check your home while you are away.

Water damage does not wait

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

What should I do first if I find a leak?

Immediately shut off the water at the nearest valve. If you cannot find a local valve, go to the main shutoff. Then, call a plumber to fix the source. For any water that has soaked into materials, contact local water damage pros to assess and dry the area properly.

How often should I inspect my home for water damage risks?

Perform a visual walk-through of your home's plumbing and exterior every three months. Check appliances, under sinks, and your water heater. Inspect your roof and gutters at least twice a year, typically in spring and fall. Regular inspections help you catch small issues before they become major problems.

Will my homeowner's insurance cover water damage from a leak?

It depends on the cause. Sudden, accidental leaks like a burst pipe are often covered. Damage from long-term neglect or lack of maintenance may not be. Policies vary, and your insurer decides what is covered. Check your policy details and report any incident to them promptly for guidance.

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