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Natural Lime

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Quicklime | Natural Selection

Conservation Technology

Description:

High Calcium Quicklime Pebble and Powder, used for making lime putty and hot-mixed or hot-lime mortars.

Weight / Size:

-

Approx. Coverage:

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Product Info:

Technical Data Sheet
Quicklime is limestone (a rock rich in calcium carbonate) that has undergone a chemical change in a kiln, liberating it of all the carbon and water it holds, creating a very unstable material (calcium oxide) which needs to hydrate. Quicklime will do so very energetically with any moisture it comes into contact with, resulting in a strong exothermic reaction and the production of lime. The addition of water, slaking, has the potential to produce temperatures exceeding 250C very quickly. However, when creating a mortar the quicklime can reach these high temperatures as hot spots only, and the overall temperature of the mortar should not exceed 100C – the temperature at which the water turns to steam. Quicklime is available in two forms; ‘kibbled’ which is granular, containing particles from 5-15mm, and finely powdered. Both of these are chemically identical, but kibbled is more dense than an equal volume of powder, and as mortars are usually mixed by volume not weight, mix proportions should be varied accordingly. (Kibbled expands to approximately 2.7 times its original volume, while powdered expands approximately 2.1 times.) Quicklime can be used to make Lime Putty or a hot-mixed mortar. A hot-mixed mortar can make an excellent and very vapour permeable mortar, with a good ‘sticky’ consistency and high water retention. However the mixing process can take more time than alternatives and due to the heat given off the process can be quite dangerous if the correct precautions are not taken. Quicklime (Calcium Oxide) is a highly reactive and quite dangerous material, please make sure you understand the risks and have taken suitable safety precautions before ordering. This material must be stored in a cool dry environment away from direct sunlight.

Products

See the full range of products

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Natural Hydraulic Lime

Otterbein NHL 2

Otterbein NHL 2 is a natural hydraulic lime that delivers the perfect balance of strength and breathability.

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Natural Hydraulic Lime

Secil NHL 2

Secil 2 can be used for internal plastering. Can be used with fine sand for skim coat.

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Natural Hydraulic Lime

Secil NHL 3.5

Secil NHL 3,5 is ideally suited for bedding, rendering and pointing.

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Natural Hydraulic Lime

Secil NHL 5

Secil NHL 5 is normally used for flooring such as limecrete floors or in highly exposed locations such as chimney flaunching etc.

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Natural Hydraulic Lime

RoundTower NHL 3.5 Grey

Used mainly for masonry and external plaster works. The most popular material for new build work.

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Natural Hydraulic Lime

​RoundTower NHL 3.5 White

Used mainly for masonry and external plaster works. The most popular material for new build work.

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Premixed Lime

Secil CAL CS

[Consolidation Mortar] Cal CS is a lime based preparation mortar before the application of a new coating.

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Premixed Lime

Secil CAL RJ

[RJ 35] A general purpose breathable lime mortar for building or pointing stone, brick and block. Ideal for conservation, restoration and newbuild.

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Premixed Lime

Secil CAL RB

Cal RB is specially designed for the maintenance and rehabilitation of buildings, being suitable for the levelling of old masonry or new construction.

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Premixed Lime

Secil CAL AC

Cal AC is a lime based finishing plaster generally used externally.

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Premixed Lime

Secil CAL AC Fino

Cal AC Fino is a fine finishing lime plaster with smooth finish

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Premixed Lime / Cork Based Bonding Mortar

Secil Isovit Lightflex

[ISOVIT E-CORK] is formulated from mixed binders, cork aggregates and Natural Hydraulic Lime. For bonding thermal insulation board.

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Insulated Lime Mortar

Secil BeCork Lime

Secil ecoCORK Lime is a lightweight render, formulated with natural cork aggregates, Natural Hydraulic Lime, lime aggregates and additions

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Insulation Render

Termointonaco

TERMOINTONACO is a nanotechnological thermo-insulating plaster based on a natural air-lime binder and lightened amorphous micro silica with high thermo-insulating and reflectance characteristics (the ability to reflect the heat back into the living area instead of letting it escape), with excellent thermal mass, acoustic soundproofing and fire resistance.

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Super Insulation Render

TermoRasante AeroGel

The TermoRasante Aerogel is a super-insulating thermal plaster, a thermal bridging regulator, anti-condensation, anti-mould, highly breathable lime-aerogel thermal plaster. Due to its high aerogel content offers great insulation performance in a thin form factor, saving valuable space.

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Super Insulation Render

RasoThermo Aerogel

The RasoThermo Aerogel is a super-insulating, high performance lime-based thermal plaster, made from lime, aerogel and natural volcanic pozzolans, with a total of 14 carefully chosen ingredients. It provides exceptional thermal insulation in a thin, breathable layer due to its combination of premium insulating materials.

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Adhesive Mortar [eco]

Prompt Natural Cement

Used to gauge traditional lime mortars and plasters, as well in situations that require rapid setting or exceptionally high compressive strengths

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Non Hydrualic Lime

Lime Putty

Used mainly on historic buildings, soft masonry and where exact mortar matches are important

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Non Hydrualic Lime

Setting Stuff

Final skim coat for lime plaster.

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Non Hydrualic Lime

Quick Lime

High Calcium Quicklime Pebble and Powder, used for making lime putty and hot-mixed or hot-lime mortars.

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Non Hydrualic Lime

Lime Wash

Historic Decorative / Protective coat for lime plaster.

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Wooden Laths

Oak Riven Laths

Provide extra grab for the fibrous lime plaster

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Protective Covering for Fresh Mortar

Hessian Roll

Frost and Fire Protection for fresh lime mortar

Secil Mesh

Reinforcement mesh

Secil Mesh

100% fibreglass mesh with 160 g/m2 anti-alkaline treatment

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Reinforcement Fibers

FiberFlex

Used to improve tensile strength and to reduce shrinkage cracking

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Pigements

Natural Pigments

A range of pigmented natural additives traditionally used to modify the colour of lime mortars, allowing for a bespoke coloured finish.

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Tapping Brush

Churn Brush

Churn brush, leaves a flush finish with an open texture.

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Reinforcement Fibers

FiberFlex

Used to improve tensile strength and to reduce shrinkage cracking

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