1. Cracked mortar joints: Over time, the mortar between the bricks may crack due to weather exposure, water penetration, and normal wear and tear. These cracks can cause the bricks to shift and loosen.

  2. Loose bricks: If you notice that some of the bricks in your wall are loose or wobbly, this may indicate that the mortar has deteriorated, and the bricks are no longer adequately supported.

  3. Water penetration: If you notice water stains or damp patches on the inside walls, it could be a sign that the mortar has lost its effectiveness and is allowing water to penetrate the bricks.

  4. Weathered mortar: The mortar between the bricks can become weathered and eroded over time, leading to an uneven surface and an unsightly appearance.

  5. Discoloration: Discolored or darker areas on your brickwork can indicate that the mortar has deteriorated and may need repointing.

  6. Soft mortar: If the mortar between the bricks feels soft or crumbly to the touch, it is a clear sign that it has deteriorated and is no longer providing the necessary support to the bricks.