They are designed to absorb expansion and contraction of building materials.
Building faces expand and contract due to warming and cooling from seasonal variation, or due to other heat sources. An expansion joint or movement joint is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials, and vibration, or to allow movement due to ground settlement or seismic activity.
In our Knauf Exterior Wall with AQUAPANEL® Technology brochure on the page 71 there is a bar code which leads you to the leaflet “OVERVIEW: PLASTER PROFILES FOR THE KNAUF EXTERIOR WALL WITH AQUAPANEL® TECHNOLOGY”. You can download the brochure in the following link: www.aquapanel.com/downloads
Or you can access the information here.
If different materials than specified in the brochure, these have to be tested.