The answer to 'why is my retaining wall drainage problems' is that poor drainage is a common issue with retaining walls. Inadequate or blocked drainage can cause water buildup behind the wall, leading to soil erosion, wall cracks, and even complete failure. Symptoms may include standing water, soil seepage, and visible damage to the wall.
Some common causes include improper initial installation, clogged drainage pipes, and lack of regular maintenance. Solutions may involve improving the drainage system by installing or unclogging weep holes, adding drainage pipes, and ensuring proper grading and water flow away from the wall. Smaller issues may be DIY-friendly, but larger drainage problems or structural concerns often require a professional landscaper or engineer to assess and repair.