Damp help? Salt or something else?

[Kara S]

Hi. I have bought an 80’s bungalow and there is salts or something else 2 bricks below dcm. 
Is this a major problem? 
There is no damp in the home that I am aware of. 

Is there something I can do like paint them black with the bitumen? 
I have added pics. 
Please let me know your thoughts.. 

Thanks

[Mike]

Yes, looks like efflorescence. You can treat if with a weak acid solution, from a builder's merchants, of it bothers you.

[Iceverge]

In my opinion you can never stop moisture, only manage it. If you apply something like bitumen then it's lightly it'll cause an issue to pop up elsewhere. 

 

Cleaning the bricks with acid will treat the symptom but for the ultimate longevity of the bricks and the building i'd be aiming for something that took away the moisture more mechanically like a french drain.