Water Behind Siding: Signs It Is an Emergency

Stains, soft boards, bubbling paint and mildew can mean water behind siding. Learn which signs are urgent and what to do first before the damage spreads.

By The StormGuard Siding CrewPublished Last updated
Water dripping down vinyl siding with a panel pulled back to show rotted, mold-stained sheathing and rust streaks below
Water behind siding is an emergency when you see soft or spongy boards, stains or a musty smell inside, bubbling or peeling paint, swollen trim, or water running down the wall. Find and stop the water source first, then have the wall opened and repaired.

Warning signs of water damage behind siding

  • Dark streaks or stains below windows and trim
  • Soft, spongy or crumbling boards
  • Bubbling or peeling paint
  • Swollen trim or siding edges
  • Mildew or algae that returns after cleaning
  • Musty smells or stains inside on the matching wall

What to do first

  1. Photograph the area and the whole wall.
  2. Check gutters, downspouts and nearby roof edges for overflow.
  3. Do not seal over damp areas, because that traps moisture.
  4. Call StormGuard Siding if boards are soft or water is entering.

How the repair works

StormGuard Siding's technicians open the affected area, trace the leak to its source, replace wet or rotted sheathing and siding, and re-flash and seal the weak point so water stays out. Read more about StormGuard Siding's emergency water damage siding repair.

FAQ

How do I check for moisture behind siding myself?

Look for stains, soft spots and swollen trim, and gently press on boards below windows and corners. A professional can confirm with a moisture check when the wall is opened.

How long does it take for rot to start behind siding?

It depends on how wet the wall stays and the material, but persistently damp wood can start to degrade within weeks to months. Earlier repair is almost always cheaper.

Can clogged gutters cause siding damage?

Yes. Overflowing gutters can pour water down the wall and into joints, so the crew members check gutters when tracing a leak.

Should the siding be removed to dry the wall?

If the wall is wet, yes. Sealing it up damp traps moisture, so the technicians open it, dry it and replace anything wet before closing it.

For the repair on wood walls, see how to repair wood siding and repairing rotted siding and cedar shake.

More guides: How Much Does Emergency Siding Repair Cost in Annapolis? · What to Do After Storm Damage to Your Siding · Emergency Siding Repair vs. Replacement in Maryland. See also StormGuard Siding's emergency services and service areas, or return to emergency siding repair in Annapolis, MD.

Siding emergency? Call now.

An open wall, missing panels or water coming in cannot wait. Call StormGuard Siding, or send photos and the technicians will tell you what the technicians see and what to do next.

Call (410) 555-0142

StormGuard Siding's service area

801 Shore Dr, Edgewater, MD 21037, United States. StormGuard Siding's technicians travel to homes across Annapolis and nearby Anne Arundel communities.

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