Moisture Issues in Brick Walls
How Much Moisture Is OK in Walls?
Most homes have moisture in their walls. It’s unavoidable, as moisture can enter through the air, ground, or from activities like cooking and showering. The key is to keep moisture levels within acceptable limits to prevent damage to your home.
Generally, moisture content in brick walls should not exceed 16%. Higher moisture levels can lead to a range of issues, including:
- Mold growth
- Mildew growth
- Deterioration of wall materials
- Structural damage
- Health problems
Causes of Moisture in Brick Walls
There are several common causes of moisture in brick walls, including:
- Leaking roofs or gutters: Water can seep into walls through cracks or gaps in the roof or gutters.
- Rising damp: Moisture can rise from the ground into walls through capillary action.
- Penetrating damp: Water can penetrate walls directly through cracks or holes, or through porous brick.
- Condensation: Moisture in the air can condense on cold surfaces, such as walls, leading to dampness.
- Internal moisture sources: Activities such as cooking, showering, and drying clothes can release moisture into the air, which can then condense on walls.
How to Prevent Moisture Problems in Brick Walls
There are several steps you can take to prevent moisture problems in brick walls, including:
- Keep gutters clean and in good repair: Clogged or damaged gutters can cause water to overflow and seep into walls.
- Install a vapor barrier: A vapor barrier can help to prevent moisture from rising from the ground into walls.
- Seal cracks and holes in walls: Use a waterproof sealant to fill any cracks or holes in walls, both inside and outside.
- Control condensation: Use exhaust fans in kitchens and bathrooms to remove moisture from the air.
- Limit moisture sources: Avoid activities that release excessive moisture into the air, such as drying clothes indoors.
Conclusion
Moisture in brick walls is a common problem, but it can be prevented and treated by following the tips outlined above. By keeping moisture levels within acceptable limits, you can help to protect your home from damage and health problems.