Call Us: 01189 469 148 | Email Us: info@quatradirect.co.uk
Call Us: 01189 469 148 | Email Us: info@quatradirect.co.uk
Lime mortar is a versatile building material traditionally used in the construction and repair of buildings and other structures. We create this flexible, durable and breathable mortar by simply mixing lime, sand and water.
When building a new structure, one of the most important decisions you will make is the type of mortar you will use. Lime mortar, in particular, is gaining popularity among builders and architects due to its unique properties and benefits. In this blog, we will explore why you should consider using lime mortar in your new build, and what you need to know to make an informed decision.
As mentioned above, lime mortar is a building material that is formed by mixing lime, sand, and water. This compound has been used for centuries in construction and is known for its success in structures such as the Egyptian pyramids. Additionally, the Roman Empire adopted lime-based mortars and extensively used them in their famous Roman Concrete. This material is known for its high strength, flexibility, and longevity. It has been proven to withstand the test of time and will last thousands of years if properly maintained.
Lime mortar is proven to be more durable than cement-based mortar. We know this based on history and its ability to withstand the test of time. Lime mortar and lime render have been used for centuries, and there are many examples of lime-based structures built back in 4000 B.C. This is a testament to its durability. In new build homes, lime-based materials can be expected to last for decades, if not centuries, with proper maintenance.
Lime mortar is more flexible than cement-based mortars, which makes it ideal for use in older buildings where the walls and structure may be prone to movement. This flexibility also reduces the risk of cracking, which can be a major issue with cement-based mortars.
Unlike cement-based mortars, which are more rigid and brittle, lime mortar is more flexible, allowing them to accommodate the natural movement of buildings thus reducing the risk of cracking.
This is important in new build homes because settling can cause cracks in walls. Lime-based materials can prevent or minimise cracking, whilst also self-healing over time, which can extend the lifespan of the building.
Lime mortar is porous and breathable, which means it allows moisture to escape from the building, preventing dampness, decay, mould and rot. This is important in older buildings, where moisture can often be trapped in the walls and cause damage over time. Unlike cement mortar, lime mortar allows moisture to evaporate from the walls.
Lime render and mortar have a unique appearance that is highly valued in architecture. Lime-based materials have a natural, matte finish that can enhance the beauty of a building. They are also highly customisable, as different colours and textures can be achieved through various finishes and techniques.
Whether you prefer a traditional look or a more modern look, you can find a lime mortar that will complement your design.
Low embodied energy: Lime is produced by heating limestone at around 1,100 degrees Celsius, whereas cement production requires high temperatures of around 2000°C. Cement manufacturing consumes a lot of unnecessary energy, subsequently, the production of lime mortar and lime render requires much less energy than the production of cement-based products.
Low carbon footprint: Lime has a lower carbon footprint than cement. The production of cement produces a significant amount of carbon dioxide; a greenhouse gas, as a by-product. Lime, on the other hand, absorbs all of its produced carbon dioxide during the curing process, making it a carbon neutral material.
Recyclable and biodegradable: Lime mortar and lime render can be easily recycled and reused. Additionally, lime is biodegradable, meaning it does not harm the environment and will eventually break down.
Lime is a natural material that can be sourced locally and is abundant in many regions. Its production is also less energy-intensive than many modern building materials, which makes it a more sustainable option. Furthermore, lime-based materials are fully recyclable and biodegradable, which reduces their environmental impact.
Lime, also known as calcium oxide (CaO), is a basic oxide that readily reacts with water (H2O) to form calcium hydroxide (Ca(OH)2). This reaction is exothermic, meaning that it releases heat.
When lime is exposed to carbon dioxide (CO2) in the air, it undergoes a process called carbonation, where it reacts with CO2 to form calcium carbonate (CaCO3). This reaction is also exothermic.
The self-healing property of lime comes from this process of carbonation. When lime-based materials, such as lime mortar, are exposed to water and carbon dioxide in the atmosphere. The lime in the material reacts with the CO2 to form calcium carbonate and this process seals any microcracks in the material, effectively healing it.
The carbonation process is a slow one and can take months or even years to fully complete, depending on the level of exposure to CO2 and the presence of moisture. However, once the process is complete, the resulting calcium carbonate is very stable and protects the material from further deterioration.
In conclusion, lime mortar and lime render offer many benefits for new build homes, including breathability, flexibility, sustainability, aesthetics, and durability. These materials have stood the test of time and continue to be an excellent choice for construction. If you are building a new home, consider using lime-based materials for a healthier, more sustainable, and more beautiful living environment.
Whether you’re building a traditional or modern structure, lime mortar is a great choice for those who value durability, flexibility, and aesthetics. With the right preparation, using lime mortar in your new build can be a wise investment that will pay off for years to come.
