Brickwork spalling

[Rekusu]

What ho one and all,

I have a brick cavity boundary wall (it is mine) that originally, was the wall to the garage. The neighbours side is fine (that was the external wall) but my side (it was the internal) is not so good. The wall is now external on both sides.

My side, many of the bricks are spalling and a lot of the mortar, in patches is loose and easy to poke with a cold chisel. In the past, I had applied a water sealing coat, but it does not last long. It is not decorative, so I am reluctant to remove all the spalling bricks and rake out all the mortar, particularly as a lot of the mortar is pretty solid, but patches are just like dust.

My question is, what is the easiest way to tidy it up and give it a new(ish) lease of life without creating a major job?

Thanks and toodle pip

 

[foxhole]

Mortar rake down any loose sections and repoint .Sealing may be cause of spalling trapping moisture which would otherwise evaporate off the surface ,

 

[Rekusu]

Thanks. Just slightly daunted by the amount of work; around 2.4m high and 10m long. Fortunately, most of it just needs a wire brush.

When I say 'sealing', it was a 'breathable' masonry paint, just to make it a grey wall rather than the random coloured red brick.