Why Use Lime in Your Building Project?

Lime is a natural, breathable building material that offers outstanding performance in both heritage building restoration and eco-friendly property development. Whether you’re repairing a period property or designing a breathable home from the ground up, lime mortars, renders, and plasters are a superior, environmentally responsible alternative to cement.

These natural lime-based building materials:

• Regulate internal humidity and prevent trapped moisture

• Reduce condensation and the risk of mould and other related issues

• Allow solid walls to breathe, enhancing energy efficiency

• Adapt to minor structural movement, reducing cracking

Breathable Lime Plasters and Eco-Friendly Renders

Our eco-friendly lime render systems are designed to withstand the elements while maintaining excellent vapour permeability. These breathable finishes are ideal for solid wall insulation upgrades, traditional lime rendering on stone buildings, and external restoration of listed properties.

Likewise, our breathable lime plasters are perfect for both restoring historic interiors and creating healthy, toxin-free living spaces in modern homes. Whether you need lime plaster for old buildings or natural plaster for new constructions, Unity Lime has a solution that can be tailored to your needs.

Traditional Lime Mortars and Limecrete Flooring Systems

We supply a wide range of lime mortars, including hot-lime mortars, lime putty mortars, and natural hydraulic lime (NHL) blends—all suitable for repointing historic masonry and, rebuilding stone walls, or restoring cob and earth structures.

In addition, our limecrete flooring systems provide a sustainable, low-carbon alternative to concrete, offering breathability and flexibility ideal for retrofit projects, passive house designs, and heritage building upgrades.

A Proven Material with a Rich History

Lime has been used in architecture for thousands of years—dating back to a time long before cement existed. From the ancient Egyptians and Greeks to Roman engineers and medieval stonemasons, lime has played a central role in historic building techniques across civilisations. Its natural durability and self-healing properties have made it the preferred choice for structures that stand the test of time.

Today, there is renewed interest in traditional lime mortar for heritage homes, driven by conservation best practices, sustainability goals, and building health standards. Lime’s low environmental impact, recyclability, and performance make it a smart choice for anyone looking to build or restore using natural materials.