The short answer
How Water Gets Inside
Brick looks solid, but it is actually porous. Rain, sprinklers, or a plumbing leak can push water through tiny openings in the brick or mortar. Once inside the wall cavity, the moisture has nowhere to go, so it soaks into wood studs and insulation.
Cracks in mortar joints are a common entry point. Even hairline gaps can let water in during heavy rain. Flashing that fails around windows or rooflines also directs water behind the brick. You may see efflorescence, a white chalky powder, on the surface, which is a clue that moisture is moving through.
- Cracked or missing mortar
- Damaged flashing around windows or roof
- High ground soil against the wall
- Leaking pipes inside the wall cavity
- Poor drainage from gutters or downspouts
- Condensation from humid air
Why It Matters
Hidden water can compromise the wall's strength over time. Rotting wood loses its load-bearing ability, and rusted metal fasteners can fail. That can lead to cracks in the brick face or even a bulging wall, which is a serious structural concern.
Moisture also invites mold, which can affect indoor air quality. If you or anyone in your home feels unwell from mold exposure, see a doctor. Catching the problem early saves you from bigger repairs later, so do not ignore the warning signs.
What to Do First
Start by stopping the water source. If it is a plumbing leak, shut off the water supply to that area. If it is rain, check gutters and downspouts to ensure they are clear. You can also look for obvious cracks in the mortar and seal them temporarily with caulk.
Then, call in local water damage pros for a thorough inspection. They can use moisture meters and thermal cameras to find hidden pockets of water. They will also check the extent of the damage to the framing and insulation, so you know what repairs are needed.
Repairing the Wall
Repair usually involves opening the wall to let it dry. The pros may remove wet insulation, dry the cavity with air movers and dehumidifiers, and treat any mold. Then they replace damaged wood and reattach the brick or siding.
The cost depends on how much of the wall is affected and how deep the water traveled. It often ranges from a few hundred to a few thousand dollars, but that depends on the size of the area and the extent of structural damage. A detailed assessment gives you a clearer picture.
- Drying out the wall cavity
- Removing wet or rotted wood
- Treating mold growth
- Replacing insulation and vapor barriers
- Repairing or repointing brick and mortar
Water damage does not wait
Call (386) 272-5697 any time, day or night, and describe what happened.
Call Now (386) 272-5697Frequently asked questions
How can I tell if my brick wall has water damage?
Look for white stains on the brick, a musty smell indoors, or soft spots on drywall. You might also see peeling paint or dark streaks. If you suspect moisture, a professional inspection with a moisture meter can confirm it.
Can I fix water damage in a brick wall myself?
Small surface cracks you can seal, but hidden water damage is tricky. Drying the cavity properly takes equipment you may not have. For anything beyond a minor touch-up, it is safer to have the pros handle it to avoid leaving moisture behind.
Does insurance cover water damage in brick walls?
Policies vary, and your insurer decides what is covered. Sudden leaks from a burst pipe might be covered, but gradual seepage from poor maintenance often is not. Check your policy and talk to your agent about your specific situation.