Hydraulic Lime Mortar

Why Use Hydraulic Lime Mortar?

Lime has been used in the construction of buildings for over 2000 years, and used on the most iconic historical landmarks across the world. For example, the Great Wall of China, the Houses of Parliament and Rome Colosseum. These historical buildings are still here today, due to its unique beneficial properties.

houses of parliament


Lime mortar has many advantageous properties over cement; it is weaker than the bricks, masonry and stones, yet it is able to support the full weight of the structure. This gives the building the ability to flex and move without the purpose of movement joints. There are many other benefits for using it too.

Breathability 2

A common problem with modern houses is they are becoming less and less breathable. Lime allows moisture to evaporate and wall to breathe.

 Absorbs Co2

Lime has a very unique benefit to any other building material currently available. When curing process starts it re-absorb CO2 from the atmosphere.

Recycle Masonry  2

It allow masonry to be recycled at the end of the buildings life.

Reduces Expansion Joints

Modern buildings using cement will generally have an expansion joint every 8 metres. By using lime you can have an expansion joint every 20 metres.


Lime mortar has a low modulus of elasticity, which allows for slight movement and thermal expansion throughout the life of the building.

Ready Mixed

Our mortars are ready mixed at our state of the art factory. This removes the possibility of inconsistent colour and strength that can occur during site mixing.

Which Hydraulic Lime Mortar Should I Use?

Ashlar is used for a finely dressed (worked) masonry, which is a very thin joint between blocks and generally used for 3mm to 6mm joints.

NHL 3.5

NHL 3.5 strength can be used for permeable masonry materials which is mainly used above ground. Generally, it is used for bricks, facings, commons, blockwork, bedding, sandstone, limestone, flint, terracotta, cavity, solid walls, pointing and repointing.


NHL 5 strength is commonly used for the foundations of buildings, coastal locations, or for parapets, coping’s and chimneys in external areas.

Why Use Coloured Hydraulic Lime Mortar?

Our coloured lime mortar will give you the perfect match for pointing your old house, or a significant aesthetic improvements on your new build. Our bespoke ready mixed colour matching service is easy and fast. Our heritage range are bespoke to conservation areas for listed buildings in London, Bath, Cotswold and a variety of other counties across the United Kingdom.

Traditional London
Bath Stone
Cambridge Dark Grey
Glasgow Grey
Padstow Brown

­New Heritage Lime Mortar Range

Our Heritage lime mortar offers the best of both worlds for your home – beauty and performance combine to offer a finished product we know you’ll love and enjoy. If you’re looking to do repairs or a new build with the wow factor, look no further, it is suitable for any property; these beautiful, heritage colours are made using highest quality materials and simple to use.

lime mortar
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