What's the Difference Between Repointing and Tuckpointing?

Brick masonry can withstand the elements and is one of the most durable building materials available. However, you must maintain and care for it. A strong brick wall can remain for a century without needing to be repaired; however, mortar joints begin to show signs of wear after 20-30 years. If mortar joints are crumbling or exhibiting degradation, they must be rectified immediately.

Understanding tuckpointing vs repointing is important when evaluating brick masonry repairs.

What is Mortar?

Mortar is made from sand, cement, and water, which react chemically to make a hard material. Mortar is the "glue" that joins masonry pieces such as brick, stone, and terracotta together so that the assembly sheds water. When putting together masonry, the mortar is applied full depth and tooled. While mortar is long-lasting, it does deteriorate with time, necessitating care to keep the wall weathertight.

Why Mortar Deteriorates?

Weather and Structural Movement

Weathering removes the mortar's outer face, such as freeze/thaw cycles. As a result, the mortar can crack when exposed to the differential movement of seismic activity and building settlement.

Moisture Intrusion

Unmaintained roofs can transfer water into the wall system, resulting in efflorescence or salt depositions on the wall's surface. This same wetness can cause dirt to accumulate and biological development to occur, hastening the deterioration of the mortar.

Poor Previous Repairs

A previous poor repointing job with insufficient mortar or a lack of joint preparation might cause damage to the substrate masonry units.

Mortar Compatibility Issues

Only certain elements need to be repointed. This is good since original mortar joints are preferable to repointed joints. However, the new mortar must match your existing joints. Otherwise, you will have a mismatched look.

Choosing the appropriate mortar goes beyond just getting the right color. Although it may appear paradoxical, if the new mortar is excessively strong, it might affect the integrity of the masonry building and potentially cause further damage. Therefore, the mortar chosen for the work should be the same strength, if not slightly weaker, than the original mortar.

Repointing vs. Tuckpointing

Repointing is the functional repair of deteriorated mortar joints to restore structural integrity and prevent water penetration. It involves removing damaged mortar and replacing it with new mortar to reseal the joints and protect the masonry.

Tuckpointing is a more specialized process that improves both durability and appearance. After the joints are repointed, a thin, contrasting line of mortar is applied to create the look of clean, uniform joints.

In simple terms, the difference between tuckpointing and repointing is that repointing focuses on structural repair, while tuckpointing adds a decorative finish in addition to protection.

Tuckpointing is said to be the process of filling mortar joints in brickwork with two distinct colors of mortar. One of the two hues used is designed to seem like real bricks. As a result, it blends in and appears seamless. The second color employed is contrasting and is intended to represent mortar joints. By incorporating the alternate color between the initial brick-colored mortars, the mortar joints appear fine rather than thick.

Tuckpointing was invented in the late eighteenth century in England. The process was developed to mimic the appearance of rubbed brick, a more expensive building material that swiftly gained popularity at the time. Tuckpointing was used by homeowners who wanted to replicate the appearance of these high-end rubbed bricks without spending so much money. The true definition of tuckpointing is no longer commonly used, but it has not been completely forgotten and is still linked to the modern repointing method.

Signs Your Mortar Needs Repair

As previously stated, the mortar joints on a masonry construction might show signs of wear in as little as 20 to 30 years. Look for evidence that your mortar joints need to be repaired, such as,

• More than 6mm mortar erosion is seen.
• There are spots or entire sections of disintegrating mortar visible.
• Hairline cracks can be seen in the mortar.
• There may be fractures or gaps between the actual bricks and the beginning of the mortar.

When to Repoint

Before repointing, determine if the building has to be cleaned. Cleaning before repointing guarantees that all damage is obvious when there is a lot of soiling, lichen, moss, vines, and so on.

When to Tuckpoint

At this time, you may want to rush out and inspect every inch of your brick home or commercial building. But, before you do, consider the following warning indications that your house may require quality tuckpointing services soon:

• Your brick construction has fractures or signs of disintegration.
• The mortar has flaws or gaps in it.
• You detect a yellowish covering or a weathered/flakey surface on the mortar.

Chimney Masonry Repair

That's all there is to it. Repointing and tuckpointing are nearly the same process, except that tuckpointing includes a thin decorative line in the center of the joints. Both procedures are essential for maintaining the structural integrity of your brickwork.

Vertical has been in the chimney care business for over 35 years, and we have devoted our time and energy to bring safety to your home. Take your chimney to a higher standard with Vertical and contact us today to get a free quote!