How to Check for Water Damage
The Hudson Valley has had a particularly wet stretch of summer weather. Poughkeepsie recorded 6.62 inches of rain during July 2026, compared with the normal July total of 3.78 inches. Three inches fell within a 24-hour period from July 28 through July 29. During that storm, the National Weather Service issued a Flash Flood Warning for southwestern Dutchess County, including Poughkeepsie, Beacon, Wappingers Falls, Fishkill, Pleasant Valley, and surrounding communities.
That is a lot of water for roofs, foundations, gutters, drainage systems, windows, and exterior materials to manage in a short period of time.
Even after the rain stops and standing water drains away, damage may not be immediately visible. Moisture can collect in attics, behind walls, beneath flooring, around windows and doors, or in basements and crawlspaces. A new stain, musty odor, swollen piece of trim, or tripped breaker may be the first indication that water has reached an area where it does not belong.
August is a good time to walk through your home and look for signs of water intrusion. Use this checklist to identify possible damage, consider where the water may be coming from, and determine which professional to call when you find a problem.
Before You Begin
Photograph visible damage and affected belongings before beginning cleanup, especially if you may need to contact your insurance company.
Use caution around standing water. Floodwater may contain sewage, chemicals, sharp objects, and other hazards. Do not enter water when electrical outlets, appliances, wiring, or equipment may be involved.
Never turn electrical power on or off, use an electrical tool, or touch wet electrical equipment while standing in water. If you cannot safely reach the electrical panel, call an electrician.
Roof, Attic and Chimney
Begin at the highest level of your home. Roof leaks may be visible in the attic before stains appear on the ceilings below.
Look for:
Damp, flattened, or discolored insulation
Darkened roof decking or rafters
New water stains
Dripping or active moisture
Rust around nails or metal fasteners
Musty odors
Moisture around vents, skylights, valleys, or other roof openings
Do not assume that a stain directly identifies the location of the leak. Water may travel along rafters, framing, pipes, or insulation before dripping into the attic or living space.
Check the ceilings and walls surrounding the chimney. Look inside the fireplace for dripping, standing water, rust, deteriorating masonry, or staining.
Water near a chimney may be connected to damaged roof flashing, deteriorated masonry, or a missing or damaged chimney cap.
Who to call: Contact a roofer for roof or flashing leaks. Call a chimney professional for masonry, chimney-cap, or fireplace issues.
Basement and Crawlspace
Basements and crawlspaces are often among the first places to show signs of water entering through the foundation or lower portions of the home.
Look for:
Puddles or standing water
Damp foundation walls
Water lines or staining
Wet insulation
Musty odors
Moisture around basement windows
Water around plumbing penetrations
New or expanding foundation cracks
Efflorescence, which may appear as a white, powdery residue on masonry
Try to determine whether the water is coming from a leaking pipe, a basement window, the foundation wall, or the floor.
Pay particular attention to stored boxes, furniture, carpeting, and other absorbent materials. These items may hold moisture even after the surrounding surface appears dry.
Bowing walls, movement, or significant cracks may indicate a problem that requires more than waterproofing.
Who to call: Call a plumber for leaking pipes. Contact a waterproofing or foundation contractor for water entering through walls or floors. Consult a structural professional if you notice bowing, movement, or significant cracking.
Walls, Ceilings, Windows and Doors
Water does not always appear directly below its source. It may travel behind drywall or along framing before becoming visible.
Inspect walls and ceilings for:
Brown or yellow stains
Bubbling or peeling paint
Soft or crumbling drywall
Sagging areas
Dampness around trim
New cracks
Visible mold or persistent discoloration
Around windows and exterior doors, check for:
Damaged or missing caulk
Swollen or separated trim
Peeling paint or stain
Soft wood
Damp window sills
Water along door thresholds
Staining below the opening
The location and timing of the damage may provide clues. Moisture below a bathroom or kitchen may point to plumbing. Staining that appears after rain may be connected to the roof, siding, flashing, window, or door.
Who to call: Call a plumber if the damage is near pipes, kitchens, or bathrooms. Contact a roofer or exterior contractor if it appears after rain.
Floors, Trim, Cabinets and Mold
Water can collect beneath flooring, behind baseboards, inside cabinets, and within wall cavities. Even when the visible surface feels dry, moisture may remain trapped underneath.
Watch for:
Buckling, cupping, or lifting floors
Loose flooring
Swollen baseboards
Separating trim
Warped cabinet panels
Soft or crumbling materials
Visible mold
Persistent musty odors
Open cabinets beneath sinks and around plumbing fixtures. Check the bottom panels, back walls, and nearby flooring for staining, swelling, or dampness.
The EPA recommends drying water-damaged areas and materials within 24 to 48 hours whenever it can be done safely. Fixing the source of the moisture is also essential because mold and water damage may return when the underlying problem remains.
Who to call: Contact a water-damage restoration company if materials remain wet or moisture may be hidden. Call a mold-remediation professional if mold is widespread, hidden, or keeps returning.
Plumbing and Appliances
Not every water problem is caused by rain. A seasonal home inspection may also uncover a plumbing or appliance leak that was already developing.
Inspect around:
Water heaters
Washing machines
Dishwashers
Refrigerators with water lines
Sinks and cabinets
Toilets
Tubs and showers
Visible plumbing connections
Sump pumps
Look for active dripping, moisture beneath appliances, stained cabinet floors, corroded connections, damaged supply lines, or water around drains.
A puddle near an appliance does not always mean the appliance itself is responsible. The water may be coming from a supply line, drain, nearby plumbing fixture, or condensation.
Who to call: Call a plumber for leaking pipes, drains, fixtures, or water heaters. Contact an appliance technician if the leak is coming from inside an appliance.
Electrical Areas
Water and electricity are a dangerous combination. Check the surrounding area carefully, but do not touch wet electrical components.
Call an electrician when water has reached, or may have reached:
Outlets or switches
Light fixtures
Electrical wiring
Appliances
Furnaces or air-conditioning equipment
Sump pumps
Circuit breakers
The electrical panel
Other warning signs include:
Buzzing or crackling sounds
Sparks
A burning odor
Flickering lights
Warm or discolored outlets
Frequently tripped breakers
An electrical shock or tingling sensation
Do not enter standing water to reach the main electrical panel. Do not restore power to wet circuits, appliances, or equipment until they have been inspected by a qualified electrician.
Who to call: Contact a licensed electrician. Do not touch wet electrical equipment or enter standing water.
Address the Source Before Making Repairs
Replacing damaged drywall, insulation, flooring, trim, or cabinets will not solve the problem if the source of the water remains.
Before beginning cosmetic repairs:
Identify and repair the source of the water.
Photograph and document the damage.
Remove standing water safely.
Dry the affected area completely.
Check for hidden moisture or mold.
Determine which materials can be saved.
Replace materials that are damaged beyond repair.
Some minor surface moisture may be manageable for a homeowner. Extensive flooding, sewage contamination, electrical exposure, structural movement, widespread mold, and moisture hidden inside walls or flooring require professional assistance.
Once the source has been corrected and the area is completely dry, Page Lumber can help you plan for building materials that need to be repaired or replaced.