Vertical cracks in south facing corner of a 90s built house. Thermal movement or more sinister?

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Vertical crack going through brickwork, blah, blah, blah.

Been requested to remove pics, thus thread has lost its context.
 
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None of the cracks appear serious enough to prevent the house buy - has any survey been done?
The cracks look like thermal cracks?

Are there any corresponding cracks inside the house?
1993 is almost new build and the mixture of fittings suggests someone has since 1993 had an amateurish go at the drainage - its easy to test for drainage/gulley leaks.
 
Thermal.

Needs a movement joint or will just crack again if you renew the bricks
 
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Thermal.

Needs a movement joint or will just crack again if you renew the bricks

So, helibar and stitching would not offer a permanent solution?
 
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The problem is the whole wall, the bricks, the mortar, not any particular component or point in time. The wall is susceptible to future expansion and contraction.
 
I still don't understand why the same happened to the conservatory dwarf wall in the shaded area.
 
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Thermal.

Needs a movement joint or will just crack again if you renew the bricks
Agree, common to put bed joint reinforcement in bays and other smaller panels to prevent this.

The corner one is more interesting as guidance suggests 12m between returns is OK for brickwork without movement joints.

It’s very minor and unlikely to get any worse.
 
as the crack is an even width, that indicates horizontal movement -ie thermal
 
I still don't understand why the same happened to the conservatory dwarf wall in the shaded area.
Small panels are more susceptible to differential thermal movement, especially when integrated with a larger panel.
Bed joint reinforcement is often specified in small sections to prevent this.
 
Structural engineer booked.
 
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Structural engineer failed to show.
 
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