RJ3.03   LIMEWASH WITH TALLOWe

PRODUCT DATA SHEET

DESCRIPTION:

 A traditional natural permeable paint for the decoration of lime putty renders and porous building materials. Tallow is added to the hot slaking lime to improve the "rain-shedding" properties of limewash. Some of the tallow reacts with the alkaline lime to form an insoluble calcium soap; the rest of the fat is dispersed by this soap and binds the mixture together. Limewashes do not 'dry' like modern paints but 'set' by reaction with atmospheric carbon dioxide in the presence of moisture. Generally for 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 are darker in tone when wet.

COLOURS:

 20 'Traditonal' C8 colours + White.
18 'Classic' C7 colours + 9 'Italian' C7 colours.

AVAILABILITY:

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

SHELF LIFE:

The tallow tends to coagulate and Tallow Limewash is best used within 2 weeks of manufacture.
Keep cool in sealed containers, and protect from heat and frost.

COVERAGE

 Approx 4 m2/litre/coat depending upon texture and porosity of surface.

HEALTH & SAFETY

 Alkali: (pH13). Protect eyes, open sores, cuts and skin. See safety data sheet RJ 5.03C.

OBSERVATIONS:

 Limewash with Tallowe is an exterior grade limewash used for the decoration of lime putty renders, porous building materials, and previously tallow-limewashed surfaces. Casein limewashe is normally preferred on less porous surfaces and hydraulic lime renders. It is occasionally used internally on lime plaster as it is less likely to brush off on clothes. It is less permeable than Pure Limewash (RJ3.01) and Casein Limewash (RJ3.02).
Coarse textured wood or sponge floated surfaces are far preferable to smooth steel-trowel polished surfaces. Sample trials should always be carried out to assess compatibility with substrate.
Coloured limewash is made using natural earth pigments. Colour and tone 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:

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

PREPARATION:

Limewash with Tallow requires a surface which is firm, clean, and porous.
It should not be applied to new lime render before it has carbonated, as Tallow Limewash is less permeable than Pure or Casein Limewash and will slow the rate of carbonation of the render beneath.
Limewash with Tallow can be applied to previously tallow-limewash painted surfaces, but not to other paint types. 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.
All algae or mould should 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.
Limewash with Tallow 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 the shelf-life period.
Limewash with Tallow 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- the 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