Poorly Designed Extension, Corrected

Eight year old double story extension added to give extra width to bedrooms and upstairs living area.

Cause

The original design not great great with this one. Control are mainly added to allow for thermal expansion but can be beneficial when creating new wall next to old but not internally as the above picture illustrates.

Solution

Open control joint and inject grout. Install wall crack stitching systems and repair render to match existing.