How to repair a gap on the exterior wall

Repair of a gap in the exterior wall is done in the way described below:

Clean the gap with a dusting brush to remove the loose sand, mortar etc.

Place masking tape above and below the gap.

Apply universal filler with gun.

Shape filler with a moist finger tip.

Let it dry.

After a few hours, apply matching exterior masonry paint with a paint brush.

If the gap is too wide, then use sand/cement mortar mix in 3:1 ratio.