Why Does Water Seep Through Brick Walls Into the Home?

Brick is a natural material with tiny pores that soak up water like a sponge. When rain hits the wall, some water is absorbed directly into the brick face. In a humid subtropical climate with hot rainy summers, this happens often.

The absorbed water then moves through the brick toward the interior. It can also pass through tiny cracks in the mortar joints. Over time, repeated wetting and drying weakens the brick and mortar, making seepage worse.

Once water enters the wall, it can soak into the wood framing, insulation, and drywall behind the brick. This leads to rot, mold growth, and staining. The water can also travel downward and collect at the base of the wall, causing floor damage.

If the ground around the foundation slopes toward the house, water pools and presses against the wall. That increases the amount of moisture that seeps through. Clogged gutters and downspouts that dump water near the wall also add to the problem.

Start by checking your gutters and downspouts. Make sure they are clear and direct water at least a few feet away from the foundation. Also inspect the exterior for cracks and gaps, and seal them with appropriate caulk or mortar.

If you live in a rainy area, keep an eye on the walls during heavy rain. Water damage can escalate fast. A professional inspection can help pinpoint the exact entry point and recommend the right repair approach.

• Clean gutters and extend downspouts
• Seal cracks in mortar and brick
• Repair or replace damaged flashing
• Improve grading around the foundation
• Check interior walls for damp spots and stains