RJ3.02    CASEIN BOUND LIMEWASHe

PRODUCT DATA SHEET

DESCRIPTION:

 A traditional natural permeable paint for the decoration of lime plaster, lime render, limestone, soft brick and porous building materials. Casein, a natural glue derived from milk, is added to improve adhesion and the 'rain-shedding' properties when used externally. Limewashes do not 'dry' like modern paints but 'set' by reaction with atmospheric carbon dioxide in the presence of moisture. For Interior and Exterior use.

ENVIRONMENTAL CONSIDERATIONS

Limewashese are environmentally friendly products made with natural sustainable ingredients. They contain no VOCs, no petrochemical based ingredients, and no lead. Water-based.

APPEARANCE

 Matt surface coating. Colours darker in tone when wet.

COLOURS:

 20 "Traditional" C8 colours + White.
18 "Classic" C7 colours and 9 "Italian" C7 colours.

AVAILABILITY:

 5 litre and 15 litre. Limewashese are mixed to order, but can normally be supplied within 24 hours.

SHELF LIFE:

 At least 3 months when kept cool in sealed containers. Protect from heat and frost.

COVERAGE

 c. 6m2/litre/coat depending on texture and porosity of surface.

HEALTH & SAFETY

 Alkali (pH 13). Protect eyes, open sores, cuts and skin. See Safety Data Sheet RJ 5.03B.

OBSERVATIONS:

 Casein Limewashe is an exterior grade limewash and is often used internally due to its superior adhesion properties and as it is less likely to brush off on clothes than Pure Limewash. It can be used on less porous surfaces including hydraulic lime based plasters and renders, although sample trials should be carried out to assess compatibility with substrate.
Coarse textured wood or sponge floated surfaces are far preferable to smooth steel-trowel polished surfaces. Coloured limewash is made using natural earth pigments. Variations due to these pigments and differing porosity of surfaces are inevitable. Much of the charm of a traditional finish is its lack of uniformity with subtle variations of colour and tone.

LIMITATIONS:

Casein limewash cannot be used on previously painted surfaces unless the existing paint is limewash.
Casein limewash should be protected from drying too quickly, and from rain, wind and frost before carbonation.
Casein limewash is not suitable for use on 'sky-facing' surfaces or weathering details and is not to be used in unprotected exposed locations.

PREPARATION:

Casein Limewashe requires a surface which is firm, clean, and porous.
It can be applied to new lime plaster and render before it has fully dried and carbonated as the permeable nature of a limewash permits carbonation of the plaster beneath to continue.
Casein Limewashe can be applied to previously limewash painted surfaces, although sample trials should be undertaken.
Previously limewashed surfaces should be thoroughly brushed and washed with a wet sponge to remove dust, dirt and all loose chalky material that is removed readily.
Any algae or mould must be treated with an algaecide or fungicide and thoroughly washed off with clean water. Do not use proprietary fungicides containing water repellents. Make good and fill with a compatible material.

Casein Limewashe should be applied to damp surfaces. Lime plaster and render, porous stone and brick must be thoroughly moistened with a mist spray prior to application.

APPLICATION:

Ensure limewash is within shelf-life period.
Casein Limewashe must be thoroughly mixed, preferably with a mechanical whisk, to ensure even distribution of pigments and ingredients immediately before and during use as it readily settles out. Protective clothing and goggles must be worn and great care taken especially when limewashing ceilings.
Surfaces must be damp. Porous pre-wetted surfaces may need additional mist-spraying during application to ensure that the limewash does not dry too quickly.
Apply the limewash to the damp surface using a brush, not a roller, working it into any cracks. It is applied in thin coats - limewash appears transparent on application and care must be taken to avoid thick build-up which will craze on drying out and may obscure detail.
Normally, 3 coats are required, occasionally more. Each coat must be protected from drying too quickly by regular mist-spraying, and a reasonable time (at least 24 hours, often longer) allowed between coats. It is normal to mist-spray the previous coat prior to the application of the next coat.

PROTECTIONS:

Limewashing can be messy, and full protections must be provided to all vulnerable adjacent surfaces. In particular, any oak or oak flooring must be fully protected, as the alkali lime permanently stains hardwoods. Newly applied exterior Limewash must be fully protected from rain, wind, direct sunlight, frost, etc until it has cured and carbonated (normally about 4 weeks).

Rose of Jericho Website

For paint colours, refer to Paints colour chart
For full product specifications, refer to our Product listing page
TECH. ADVICE: From our Technical Department on 01935 83676. Email: info@rose-of-jericho.demon.co.uk