FREQUENT MASONRY PROBLEMS
The use of an inadequate mortar, poor drainage of water or the presence of vegetation near the wall leads to localized accumulation of water. When the wall fails to dry and is subjected to a freeze-thaw period, the brick is prone to bursting.
Since the waterproofing of a cracked brick is significantly reduced, the wall is therefore subject to water infiltration. In the long run, if the bricks are not repaired, water infiltration will cause other, much more serious masonry problems.