Mortar
Definition and meaning of Mortar in real estate.
Mortar is a workable paste composed of cement, sand, water, and lime that is used to bind bricks, stones, or concrete blocks together in masonry construction.
In more detail
It is applied wet and hardens to create a structural bond, sealing the joints between building blocks to prevent air and water infiltration. Unlike concrete, which is a structural material on its own, mortar is designed to hold other materials together and must be flexible enough to accommodate slight structural movement.
As buildings age, the mortar joints can deteriorate due to weather exposure, requiring repair through a process called repointing. For property owners and inspectors, maintaining intact mortar joints is crucial to preventing moisture damage and maintaining the structural integrity of brick or stone walls.
Key facts
| Category | Property Types & Construction |
|---|---|
| Main Ingredients | Portland cement, hydrated lime, sand, and water |
| Maintenance Process | Repointing or tuckpointing to repair weathered joints |
| Key Function | Binding masonry units and sealing out water and air |
A mason spreads mortar on a row of concrete blocks before laying the next course, ensuring the garage wall is structurally sound and protected against moisture.
Frequently asked questions
What is the difference between mortar and concrete?
Mortar contains sand and cement to bind materials together, whereas concrete includes coarse gravel aggregates, making it strong enough to stand alone as a structural element.
Why is the mortar on my brick wall crumbling?
Mortar naturally deteriorates over decades due to freeze and thaw cycles, moisture penetration, or structural settling, and crumbling sections should be repaired promptly to prevent water damage.