What is the maximum amount of mortar that can project into the grout space before it must be removed?

The maximum amount of mortar that can project into the grout space before it must be removed is set at 1/2 inch. This specification is important for ensuring that the grout can adequately fill the designated space and bond properly with the materials it's intended to secure. Excess mortar can interfere with the grout's effectiveness, leading to potential issues such as inadequate adhesion, structural integrity, and moisture control.

By limiting the projection to 1/2 inch, it allows for sufficient room for the grout to flow and fill all voids, which is essential for the overall stability and longevity of the masonry work. Proper adherence to this guideline ensures that the finished installation meets established building codes and standards, promoting durability and safety in construction projects.