Lichenite
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Lichenite
Mosses, lichen and algae have now become a major maintenance headache throughout the UK for Local Authorities, Housing Associations, industry and commerce. read more
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Mosses, lichen and algae have now become a major maintenance headache throughout the UK for Local Authorities, Housing Associations, industry and commerce. On certain older buildings in country areas these growths have been welcomed, in fact, are actively encouraged because of their pleasing effect.
However, in cities and on modern buildings, mosses, lichen and algae have the opposite effect. Their appearance on brickwork, concrete, asbestos, stonework and masonry finishes is regarded as most unacceptable. Mosses, lichen and algae disfigure facing bricks and are a contributory factor to spalling of brickwork and concrete. In addition they cause erosion of the mortar joints. Like all plant life, they hold an attract moisture, storing it within the brickwork or surface on which they are growing, giving rise to problems of water penetration.
Mosses, lichen and algae need very little to germinate and grow – moisture, light and minute quantities of mineral salt and they can contaminate virtually any surface including brickwork, stonework, concrete, render, roof tiles, cladding, walkways, tarmac etc. On certain older buildings in country areas these growths have been welcomed, in fact, are actively encouraged because of their pleasing effect. However, in cities and on modern buildings, mosses, lichen and algae have the opposite effect and their appearance is most unacceptable. They disfigure facing bricks, stonework and roof tiles and are contributory factors resulting in spotting of these surfaces. Like all plant life, they hold an attract moisture, storing it within the brickwork or surface on which they are growing, giving rise to problems of water penetration. Furthermore all these growths excrete acids which further degrades the substrate.
LICHENITE was developed following large-scale trials under widely varying conditions in many different parts of the country. Local Authorities and Housing Associations have treated thousands of dwellings, with the result that whereas growths returned within six months, treatment with LICHENITE has kept buildings completely free from mosses, lichen and algae for years.
LICHENITE is a clear, colourless solution containing unique biocides dissolved in an aqueous medium. It is a free-flowing liquid at all normal temperatures with a very faint odour. It has unlimited shelf life if stored under normal conditions. Protect from frost and store in a dry location. It is non-flammable. Wash brushes, spray equipment etc used for application in plenty of water.
LICHENITE is cleared for use as a masonry biocide. HSE No. 3936.
Application
One coat application gives a coverage of 4-6 square metres per litre, depending on the extent of growth and porosity of the surface.
LICHENITE should be applied liberally by low pressure spray or large paint brush. Allow to react for 72 hours, after which time the dead growth should be removed with a stiff bristle brush or broom. In areas of heavy contamination a second coat of LICHENITE should be applied after the growths have been removed. Large areas of growth should be removed first by power washing. The substrate should then be treated with LICHENITE to kill the roots.
The effectiveness of the treatment under normal conditions is approximately 5 years but this is considerably extended by the use of HALOSEAL or ROOFCOAT FR10. Do not apply LICHENITE during periods of hot sunshine, frost or wet weather. Growing plants should be protected from overspray. If spillage or overspray occurs, wash off with plenty of clean water.
Areas of Use
- Moss, lichen and algae growth on brickwork, stonework, concrete – these growths aggravate the problems of water penetration which lead to frost attack and spalling. Treat with LICHENITE and protect with one coat of HALOSEAL. For parapet walls, garden walls, coping stones and soldier courses, apply two coats of HALOSEAL.
- Moss and lichen growth on roof tiles and asbestos roofs – LICHENITE to be used to kill growths followed by one coat of HALOSEAL as protection against regrowth.
- Algae on render – LICHENITE to be used to kill existing growths prior to re-rendering, redecoration or cladding. Use BIOCHECK ALLWEATHER for redecoration to prevent regrowth
- Algae and moss growths on paths, walkways, drying areas, forecourts, tennis courts, cause slippery surfaces which can be a danger to tenants, particularly the elderly. Treat with LICHENITE, remove dead growths and apply a second coat.
- Woodwork – use LICHENITE to treat growths. Clean down and prepare surfaces and protect with HALOSTAIN TC.
- Moss on flat roofs, porches and corrugated asbestos – will eventually cause breakdown of roofing materials. Treat growths with LICHENITE then apply ROOFCOAT FR10 for repair and protection against roof leaks.