For centuries, brick and stone have been fundamental materials in the construction of houses, standing the test of time with their durability and aesthetic appeal. However, the introduction of modern construction practices has introduced new challenges, leading to extensive damage to our historical buildings. This article aims to shed light on these issues and offer solutions to preserve these architectural treasures.
One common problem arises from the use of electric angle grinders during the process of raking out mortar joints. While these power tools may expedite the process, they can inadvertently cause harm to delicate brickwork. Additionally, the replacement of lime mortar with impermeable cement exacerbates the situation, as it traps water within the wall structure. Over time, this trapped moisture wreaks havoc on the integrity of the bricks or stones, resulting in their deterioration. During winter, the dampness within the walls expands upon freezing, leading to cracking and flaking of the masonry.
Therefore, it is vital to exercise caution before embarking on any repointing endeavours. Take a moment to evaluate the necessity of the task and the reasoning behind it. More often than not, the perceived need for repointing stems from persuasive contractors seeking to convince homeowners of its necessity, even when it may not be required. In truth, genuine cases that demand repointing are relatively rare.
If repointing is indeed essential, it should be carried out meticulously and with the appropriate materials. Manual raking out of the old mortar, paired with the use of lime mortar that matches the desired hardness and grit content, is essential for proper preservation. However, it is essential to note that this process can be relatively expensive depending on the size and style of the building.
By understanding the challenges faced by traditional building materials like brick and stone and implementing appropriate measures, we can safeguard the architectural heritage that has stood as a testament to our history and craftsmanship for generations to come.
