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Branch Brook Dry-Out ProsWater Damage Help · Newark, NJ

What Happens to a Home That Isn't Boarded up After Damage?

Last updated October 26, 2026

The short answer

More Water Gets Inside

When windows or doors are broken, rain and wind push water directly into rooms. Even a small gap lets moisture travel along walls and under floors, reaching areas that were dry before. The longer the home stays open, the more water soaks into wood, drywall, and insulation, spreading damage far beyond the original spot.

Standing water after a storm can also rise in low areas, soaking carpets and furniture that might have been saved. Puddles left on surfaces begin to seep into seams and crevices, making cleanup harder. Boarding up helps block new water from entering while you wait for the drying process to begin.

Mold and Rot Take Hold

Damp, dark spaces inside an open home are ideal for mold to start growing within a couple of days. Mold can spread across walls, ceilings, and belongings, releasing spores that may irritate your eyes, nose, or throat. Rot also begins in wet wood, weakening floor joists, studs, and framing over time.

Once mold sets in, it often requires removing and replacing porous materials like drywall and carpet. The longer the home stays unsecured, the deeper the contamination goes. Keeping the home boarded up limits air moisture and gives you more time to arrange for a proper drying and cleaning process.

  • Mold can grow on damp drywall in as little as 48 hours
  • Wet wood starts to soften and lose strength
  • Insulation soaks up water and becomes heavy
  • Carpets and padding trap moisture against the subfloor
  • Odors from rot and mildew can linger for months
  • Moisture can seep into electrical boxes and outlets

Structural Parts Weaken

Openings in the building envelope allow wind to push against interior walls and roof sections that were not designed to handle that pressure. Loose shingles, siding, or framing can shift further, causing new gaps and cracks. Water that reaches load-bearing wood accelerates decay, making floors sag and walls bow.

The home's foundation can also suffer if water pools against it. Saturated soil pushes against basement walls, and standing water may leak through cracks. Boarding up helps protect the structure from additional wind and rain while you arrange for a professional assessment of the damage.

Animals and Debris Enter

An open home invites raccoons, squirrels, birds, and stray cats looking for shelter. They can tear through insulation, leave droppings, and bring fleas or other pests inside. Their nesting materials can block vents and drains, creating new moisture problems.

Windblown leaves, branches, and trash can blow into rooms through broken windows or doors. These materials hold moisture and add to the mess you will need to clean. Boarding up keeps animals and debris out, so the cleanup process stays more focused on the original water damage.

  • Animals can chew wires and damage pipes
  • Droppings and urine create health hazards
  • Nesting materials can block air vents
  • Leaves and dirt mix with water to stain surfaces
  • Branches can scratch floors and walls
  • Debris can hide sharp objects underfoot

Safety Risks Increase

A home without boarding is more dangerous to walk through. Wet floors become slippery, and broken glass or exposed nails can cause cuts. Saturated ceilings may collapse without warning, and weakened stairs can give way under weight. Boarding up the home helps keep people, especially children, from wandering into hazardous areas.

For your own safety, avoid entering a damaged home until a professional has checked the structure. If you feel unwell or have trouble breathing, see a doctor. The pros can assess what needs to be done, from water damage documentation to water damage cleanup, to help you move forward safely. Policies vary, and your insurer decides what is covered.

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Frequently asked questions

How long can a home stay unboarded before it gets worse?

Within a couple of days, moisture can trigger mold growth and wood rot. The longer the home stays open, the more water, animals, and debris enter. Boarding up soon after damage gives you a better chance of limiting additional harm and making cleanup more manageable.

Can I board up the home myself?

You can cover small openings with plywood if it is safe to do so. For large gaps or high windows, it is safer to let the pros handle it. They have the tools and experience to secure the home properly without causing more damage.

What should I do if the home is already open and wet?

Act quickly to cover openings with plastic or plywood if you can do so safely. Then contact local water damage pros to begin drying and cleaning. Document the damage for your records, and check your policy to understand what may be covered.

Call Now (973) 846-1705