What is a drawback of masonry construction?

The long-term deterioration of mortar joints in masonry construction is a significant drawback because it can affect the overall structural integrity and durability of the building. Over time, mortar joints can be subjected to environmental stresses such as moisture exposure, temperature fluctuations, and freeze-thaw cycles, which can lead to cracking, erosion, or even loss of bond between the bricks or stones. This deterioration not only undermines the aesthetic appeal of the masonry but can also create potential pathways for water infiltration, contributing to further decay and structural issues. Regular maintenance and repointing may be required to mitigate these issues, but this adds to the long-term costs and upkeep associated with masonry buildings.

The other options highlight various aspects of masonry construction. While high costs, poor insulation properties, and heavy weight are relevant considerations, they do not directly lead to ongoing deterioration issues as the mortar joints do. The long-term deterioration of mortar joints represents a unique challenge in maintaining the integrity of masonry structural systems over time.