Correcting Downspout Drainage

What happens here

The presenter examines a downspout system previously installed. He points out that the existing drain box is incorrectly angled and shaped, causing rainwater to miss the drain and instead run off the side, accumulating directly next to the building's foundation. He demonstrates how the water was flowing past the drain and explains that this flawed setup was a significant contributor to the basement flooding issues, especially when coupled with the previous patio layout.

Goal: Fix existing downspout drainage issues to prevent water from reaching the foundation.