Understanding The Repointing Process

Posted on: 16 November 2018

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If you own an old office building made of brick, then you should be inspecting your brick on a regular basis to make sure the mortar is in good shape. If there is some deterioration, then you should invest in repointing. Keep reading to learn what this is, and also about the signs that a repointing job should be scheduled.

What Is Repointing?

Simply put, repointing is when the brick pointing is repaired or renewed. The pointing is the exterior portion of the joints that are visible when looking at the exterior of your building. This mortar makes up the seams in between the bricks, and repointing is the physical process of removing and replacing the old mortar. 

When repointing is completed, the old pointing must be removed first. A chisel is often used with a hammer to release the old mortar to a depth of about one inch. This process is quite slow, and is completed in a way that the structural integrity of the bricks is retained. If the commercial masonry contractor is experienced, then a grinder may be utilized instead.

Once all of the old mortar is removed, a new mixture will be created, and this is usually a much softer composition. Also, the materials are kept consistent in relation to the original mortar used. Often, the age of the building is used to determine this. The mixture is spread into the open joints and it is allowed to harden and cure. 

What Are The Signs That Repointing Is Needed?

There are a few obvious signs that repointing is needed. These include the complete crumbling on the pointing where open spots are left in the seams between the bricks. Also, cracks in the pointing are a sign, and these cracks may be large and visible, or more of hairline formations. 

You may notice some moisture within your building just behind the brick walls. This is a sign that moisture has seeped in through the joints. Typically, this is possible only if the pointing has deteriorated substantially, so an inspection should be completed in this case.

If, for some reason, your brick building is covered in mildew or dirt, then it can be hard to inspect the pointing to see if repair work needs to be completed. So, make sure that you pressure wash the exterior before looking at the seams.

If you want to know more about repointing and masonry repair, speak with a commercial brick repair expert.