paintwork
Differences
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paintwork [2021/03/28 20:55] mark [Avoiding creating problems] |
paintwork [2021/03/28 21:02] (current) mark [How to fix] |
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| Where modern masonry paints have already been used, remove any loose or flaking paint by scraping or wire brushing. Any mould or fungus growth must be removed using a proprietary anti-mould treatment according damaging stonework or flooding the inside of the building. Normally a pressure water wash is only allowed up to 200psi; any higher and consent is required. Make sure that the wall has dried out completely before repainting starts. | Where modern masonry paints have already been used, remove any loose or flaking paint by scraping or wire brushing. Any mould or fungus growth must be removed using a proprietary anti-mould treatment according damaging stonework or flooding the inside of the building. Normally a pressure water wash is only allowed up to 200psi; any higher and consent is required. Make sure that the wall has dried out completely before repainting starts. | ||
| - | === For Traditional Construction === | ||
| - | Limewash and lime-harling are specialised products and although less simple to use than modern masonry paint, give a most attractive appearance. You should get specialised advice before using these materials. | ||
| === Paintwork on traditional mortar (Lime harling) === | === Paintwork on traditional mortar (Lime harling) === | ||
| - | Paint should be replaced by limewash. | + | Paint should be replaced by limewash. Limewash and lime-harling are specialised products and although less simple to use than modern masonry paint, give a most attractive appearance. You should get specialised advice before using these materials. |
| + | === Re-painting For Modern Construction === | ||
| + | For Heritage Building built in 20th Century a different approach is needed. | ||
| + | There are three main types of masonry paint available today. | ||
| + | a) Water-borne ones use modern acrylic emulsions and are easy to apply by brush, roller or spray. | ||
| + | b) Solvent-borne ones use a synthetic rubber resin and last well, but release a lot of Volatile Organic Solvents (VOCs) when they dry to the manufacturer’s instructions. e.g. Pliolite ® resin paints VOCs – Volatile Organic Solvents, which contribute to atmospheric pollution. e.g. the Scottish Lime Centre, 01383 872 722 , www.scotlime.org | ||
| + | c) A group are called ‘silicate’ paints and although not traditionally used in this country, have been used in Europe for over a century with good results. | ||
| === Paintwork on modern cement === | === Paintwork on modern cement === | ||
| Where possible, modern cement render should be removed and replaced with traditional lime harling. Having done that, use the advice below regarding paintwork on traditional mortar. | Where possible, modern cement render should be removed and replaced with traditional lime harling. Having done that, use the advice below regarding paintwork on traditional mortar. | ||
paintwork.1616957702.txt.gz · Last modified: 2021/03/28 20:55 by mark
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