Purchased house - white efflorescence on brickwork below dpc

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Been told the house is around 30 yrs old so nothing new, also not sure when the patio work has been done. Spots of white efflorescence are spread quite prominent on the wall containing the back garden patio, it doesn't seem to go away (dry weather etc), and if anything looks like it got a bit worse since purchased 6 months ago. There are some other spots around the external house brickwork showing this too at the same level.

Been told by a family member the brickwork need repointing? Would this be recommended per the photos, and could this efflorescence also be an issue with the patio or below it, does that need recommended work? (damp rising up from patio through the house bricks etc).

Would just want to know if it's nothing serious and what can be done about it, help much appreciated.
 

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May be salts in the material. Nothing to worry about i would say.

Def needs repointing there.
 
As above, nothing really to worry about.
There will be salts somewhere, eg in the ground/fill beneath the paving, which are being drawn up and form when the water evaporates.
As long as the bricks are not damaged by spalling, its just an aesthetic problem.
 
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