Identify Failed Caulking on Siding Joints

What happens here

The video begins by showcasing existing horizontal siding on a house. The initial observation is directed towards the overall wavy appearance of the siding panels, which is a visual indicator of their natural expansion and contraction due to environmental factors like temperature and humidity changes. Following this, the focus shifts to specific vertical butt joints where two siding panels meet. The video explicitly points out instances where caulk was applied to these butt joints, and critically, how this caulk has failed, exhibiting clear cracks and splits. This failure demonstrates that the caulk could not withstand the movement of the siding panels.

Goal: To understand the negative consequences of caulking horizontal siding butt joints.