Benefits of using Lime Mortar

Movement is accommodated in the bed joints, reducing the need for vertical movement joints; which greatly improves the aesthetics of buildings.

The building will have more tolerance to movement particularly in high buildings / structures

Lime will improve breathability, which allows moisture vapor to move freely through the mortar joint effectively reducing the likelihood of frost damage in the brickwork.

Sustainability

In the manufacturing process lime produces less carbon dioxide than cement, due to being burnt at lower temperatures; saving on fuel consumption and emissions of pollution and greenhouse gases. Co2 emissions are around 20% lower than in cement manufacture. Lime mortar will also absorb Co2 during the hydration process (carbonation) and over a period of time become carbon neutral.

Recycling

Due to the lower bond strength the bricks / masonry can be easily cleaned and recycled at the end of the building’s life. Lime mortar also offers several usage and mix advantages over sand/cement mortars and site mixed lime mortar:

• Reduces the need for movement joints.• Uses less energy to produce than cement. • Re-absorbs CO₂ when it cures and sets. • Allows masonry to be recycled at end of life. • Provides a breathable form of construction. • Provides a water shedding barrier for walls. • Enhances brickwork and masonry • Consistent mix proportions. • Consistent quality and colour of mortar. • Correct choice of sands. • Mortars can be re-worked for up to 24 hours. • Reduces wastage when using silo option • Productivity savings • Mortar is produced as and when needed.

Performance

Lime mortars are considerably more flexible than Portland cement mortar; which means that movement joints are not necessary in most circumstances. Lime mortar provides good vapour permeability, which enables the building to “breathe”. Mortar should not be used if the temperature is at 5°C and falling seeworking with lime mortar in Winter Conditions or check with Limetec for advice.

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