Preventing Seasonal Water Damage in Missouri

Missouri sits in a weather corridor. Gulf moisture pushes north through the state in spring and summer, cold air drops south in winter, and the result is a year that can deliver a frozen pipe burst in January and a flash flood in May. Each season attacks a house in a different place, so prevention works best as a rotating checklist rather than a single project.

Winter: the season of burst pipes

Frozen pipes are the classic Missouri water emergency, and they are usually discovered when the thaw starts rather than when the freeze happens. Water expands as it freezes and splits the pipe; the leak begins once temperatures rise and flow resumes.

• Locate the main shutoff valve now and make sure it turns. In a hard freeze, knowing where it is saves a house.
• Disconnect garden hoses and shut off and drain exterior hose bibbs.
• Insulate supply lines in garages, crawl spaces, attics and along exterior walls, where freezing is most likely.
• During hard freezes, let a thin trickle run from the faucet farthest from the main, and open cabinet doors under sinks on exterior walls so warm air reaches the pipes.
• Keep the thermostat at a consistent temperature day and night rather than letting the house cool overnight.
• If you leave for more than a few days, set the heat no lower than the mid-50s, or shut the water off entirely.
• Inspect the attic and crawl space after the first cold snap for condensation or frost on pipes and joists.

Spring: flooding, sump pumps and foundation water

Spring is when soil is saturated and creeks and rivers run high. Groundwater finds the weakest point in a foundation, and sump pumps that sat idle all winter get tested on the night of the biggest storm of the year.

• Test the sump pump monthly during wet months. Pour water into the pit and confirm the float triggers and the discharge line carries water away.
• Fitting a battery backup or a second pump matters more than buying a bigger single pump.
• Check that the discharge line is clear of debris and routed well away from the foundation, and that it does not freeze at the outlet.
• Clean gutters before the rainy season. Water that overflows the gutter lands directly at the foundation.
• Extend downspouts so they discharge several feet from the house, and check that grading slopes away rather than toward it.
• Look for cracks in the foundation and mortar joints, and seal them before the wet season rather than after.
• Check window wells for debris and consider covers so they do not fill like buckets.

Summer: humidity, storms and appliance failures

Hot, humid air inside a home is the raw material for mold, and it can build up even without a visible leak. Summer also brings the storms that turn into backup events, and the appliance failures that always seem to happen on a weekend.

• Keep indoor humidity below roughly 60 percent. A cheap humidity gauge costs less than one service call.
• Run bathroom and kitchen exhaust fans until surfaces are dry, not until you leave the room.
• Check washing machine hoses for bulges and cracks, and replace rubber hoses with braided steel on a schedule rather than waiting for a failure.
• Inspect the water heater for rust, moisture around the base and any sign of a failing tank.
• Check the air conditioner condensate drain line and pan. A clogged condensate line leaks slowly into a ceiling.
• Look at the refrigerator and dishwasher supply lines for any sign of corrosion.
• After a heavy storm, walk the perimeter and check for standing water against the foundation.

Fall: getting ready before the first freeze

Autumn is the season to prepare rather than react. The work you do in October decides what January looks like.

• Clear gutters and downspouts one more time after the leaves fall.
• Drain and blow out irrigation lines and exterior faucets.
• Have the furnace checked. A furnace that fails in a cold snap creates the conditions for frozen pipes.
• Inspect the roof from the ground with binoculars for missing shingles, cracked flashing or sagging areas.
• Seal gaps around pipes and cables entering the house, which is where cold air reaches interior plumbing.
• Re-caulk around tubs, showers and exterior door thresholds where water can seep in unnoticed.

The five-minute monthly walk-through

Once a month, walk the house looking for water. Under every sink, around the water heater, at the base of the furnace, along basement walls, and around the washing machine. Look for staining, drips, swelling and that unmistakable damp smell. Homeowners who do this catch most leaks while the repair is still a small one.

While you are down there, keep an eye on the bottom of walls and the base of any appliances. Local pages for Jefferson City, Branson and Cape Girardeau describe how river proximity and Ozark terrain change which of these risks matters most in those areas.

What to do when prevention fails

Water in a Missouri home does not sit still. It wicks up drywall, runs under flooring and starts feeding mold within 24 to 48 hours. If water gets into the structure despite your best efforts, the goal shifts from prevention to speed: stop the source, extract the water and start drying the same day.

Call (888) 217-5329 and describe what you are looking at. Prevention is cheaper than cleanup, and cleanup is far cheaper than mold remediation plus rebuild.

Related help

• Basement water damage — what to do when the pump loses the fight.
• Flood damage cleanup — the steps after a storm, creek or river event.
• Emergency water extraction — how fast standing water comes out.
• Hidden water damage warning signs — what to check when you are not sure.