Brick & Stone Repointing
Brick and stone repointing is a masonry restoration process that repairs the mortar between building material back to its original condition. Houses throughout Boston and greater Boston area require repointing or pointing to reestablish the integrity of their structure. Repairing the cracks and replacing the mortar between stone or brick walls will prevent moisture from causing further damage and loss to your property value.
AMN is a trusted restoration/repointing contractor in the greater Boston, area specializing in repointing both stone and brick structures, as well as other masonry services .
What is Repointing?
Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks, allowing the undesirable entrance of water. Water entering through these voids can cause significant damage through frost weathering and from salt dissolution and deposition. Repointing is also called pointing, or pointing up, although these terms more properly refer to the finishing step in new construction.
Steps for Repointing
Examining the structure
Before starting any actual work, we will first examine the masonry units, mortar, and the techniques used in the original construction. Then try to identify the true problem and causes of the deterioration or cracks.
Next step is to examine the materials and its various properties such as strength and permeability.
After testing, we start by removing the old mortar prior to filling the nw mortar. There are different ways to lay the mortar close to the edge of the brick. Depending on your needs, we can bring the mortar to the very edge, flush with the face of the brick or leave it recessed back to allow water to shed off the building. There are three types of recessed mortar: bucket handle, weatherstruck, and simply recessed. The bucket handle is when the mortar is in a curve shape away from the face of the brick. Weatherstruck is when the mortar starts close to the bottom brick and recesses back as it goes up towards the upper brick. The third, recessed, is when the mortar sits back from the face of the brick. There is also tuckpointing, when there are two types of mortar used and the surface one matches the color of the masonry.
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