best mortar to fill exterior crack in wall

[tonygg]

Hi, I have a crack in the brickwork of an old (80 yrs ?) house.Its maybe 10mm wide in places, mainly mortar is cracked and an odd brick.

The bricks are engineering bricks I think.
Had a structural engineer who said its historic.

Whats the best mortar to repair it with please ?
Ive been looking at something called hybrid resin mortar that looks very strong, would that be suitable ?


Thanks

[Mr Punter]

This may explain the damp issues in your other thread.  Any mortar will be better than the crack.  Does not need to be strong or hard.

[PeterW]

2 hours ago, tonygg said:

Whats the best mortar to repair it with please ?
Ive been looking at something called hybrid resin mortar that looks very strong, would that be suitable ?

In 1930s bricks I would be using a softer lime repair mortar not resin as that’s for reinforcing joints. 1:1:6 cement, lime, sand and mix well but make sure the joints are well raked out and damp when they are done.