Repointing with NHL Lime
NHL lime, also known as Natural Hydraulic Lime, is a type of lime binder that has been in use for centuries in construction and restoration projects. It is derived from limestone that contains natural hydraulic properties, meaning it can set and harden through a chemical reaction with water, similar to hydraulic cement.
NHL lime offers several benefits in construction and masonry work:
NHL lime is vapor-permeable and allows moisture to evaporate and escape from the masonry, helping to regulate humidity levels within the building. This breathability is crucial for preventing moisture-related issues such as trapped water, mold growth, and efflorescence.
NHL lime mortar has a certain degree of flexibility, allowing it to accommodate slight movement and thermal expansion and contraction in the masonry. This flexibility helps reduce the risk of cracking and ensures the longevity of the mortar joints.
NHL lime mortar produces a softer and more natural appearance compared to modern cement-based mortars. It can be tinted or colored to match the original aesthetics of historic structures or achieve a desired look for new construction.
NHL lime is a sustainable building material that is derived from natural limestone. It has a lower carbon footprint compared to cement-based mortars, making it a more environmentally friendly choice for construction projects.
Properly prepared NHL lime mortar can provide durable and long-lasting mortar joints that are resistant to weathering, erosion, and damage. It can help protect the masonry from the effects of freeze-thaw cycles and other environmental factors.
NHL lime mortar is less prone to efflorescence, which is the white, powdery deposit that can form on the surface of masonry due to moisture migration and mineral deposits. This can help maintain the aesthetic appearance of the masonry.
NHL lime mortar is non-toxic and does not release harmful chemicals or pollutants into the environment. This makes it a safe and sustainable choice for building projects.
NHL lime can be used for various applications in construction, including as a mortar for brickwork, stonework, and plastering. It offers versatility in terms of mix ratios, applications, and finishes.
NHL lime is a versatile, sustainable, and durable building material that offers several benefits for construction and restoration projects. Its breathable and flexible properties, compatibility with historic buildings, natural appearance, and environmental sustainability make it a preferred choice for us, when we are seeking to maintain the integrity and longevity of masonry structures.