Brick is a charming and enduring material that has been used by builders for centuries. However, when the mortar between the bricks starts to crack and deteriorate, prompt repairs need to be done to ensure that the brick remains intact and lasts for years to come.

How to fix cracked mortar between bricks

The type of repairs the mortar needs will depend on the size and scope of the cracks. A scattering of small, surface level cracks in the mortar is normal and not usually cause for concern, although fixing cracked mortar in bricks will help slow down further deterioration. If the mortar between your bricks just has some hairline cracks in a few places, then brick caulking could be an option to fix them and prevent them from getting bigger. Even small cracks can lead to water infiltration, so applying a waterproof brick caulk will seal the cracks and stop moisture from seeping in. Although brick caulking is a great quick fix for small superficial cracks, it isn’t going to work for larger cracks or crumbling mortar. 

How to fix crumbling mortar between bricks

Larger cracks and crumbling mortar in multiple areas need to be swiftly addressed to avert any further damage to the brick and mortar. Repointing and tuckpointing are two methods for fixing brick mortar that is cracked and crumbling. Repointing is the process of repairing damaged mortar by removing it and filling it with new mortar. Tuckpointing is a similar process where the deteriorated mortar is removed, and the mortar joints are filled with mortar that closely matches the color of the bricks. A second, narrow line of mortar in a contrasting color is then applied down the center of the mortar joints. Repointing is a good option if you just need to repair the bricks, but tuckpointing increases the aesthetics of your structure by giving your brick a crisp, clean appearance that helps give it a fresh look.

What to use to repair brick mortar

When you find yourself in need of brick mortar repair, it is important to utilize the right tools and materials for the job. Because older brick and mortar were made from softer materials, it is imperative that you use the right type and strength of mortar, so your brick and the integrity of your structure aren’t compromised. There are four main types of mortar mix – N,O, S, and M. Each type has different ratios of sand, cement, and lime to create mortar that has differing levels of flexibility, bonding properties, and compressive strength. Choose a mortar mix that will work for the type and age of your structure, the location of the repairs being made, and your local climate. Specialized tools such as an angle grinder with diamond blade, a tuckpointing trowel, a hawk board, and a jointer tool will be beneficial if you decide to tackle the project yourself.

How much does tuckpointing brick cost?

Because of the precision and expertise needed for tuckpointing brick, it’s a good idea to think about hiring a professional tuckpointing company. If you decide to have a professional handle the job, know that you will most likely receive an estimate based on the square footage of the area you need fixed. Repointing costs are cheaper, at around $3 to $15 per square foot. Brick tuckpointing requires more labor, which typically makes up the majority of the cost, and ranges from $5 to $25 per square foot. Factors such as the height, size, and shape of your home, as well as the condition of the brick, can affect the final costs.

While some basic maintenance and repairs are easily completed by handy homeowners, there are a lot of components to consider when choosing the right fix, tools, and materials. Consider hiring a professional to complete the job to ensure that further damage isn’t done that affects the integrity and stability of your brick.