Keim Soldalit is a highly specialised mineral paint system based on a binding agent combination of silica sol and potassium silicate, for use on exterior surfaces. This combination allows the application of mineral coatings not only on mineral, but also on a variety of previously painted surfaces directly without the use of any stabilising agents. Top Features & Benefits Keim Soldalit's alkaline and non-film forming solution offers the following features: Highly water repellent. Water vapour permeable, microporous. UV and acid resistant, anti-static. High weathering resistance. Non-flammable. No solvents and plasticisers added. Resists algal and fungal growth. Cradle to Cradle Certified Silver Preparation & Application Substrate PreparationAll loose, flaking and unstable material must be identified and then thoroughly removed, all surfaces must be thoroughly washed down with clean cold water to remove all surface dirt and dust. When all surfaces are clean, sound, wind dry, dust free and free from all surface contaminants, decoration using Keim Mineral Paints may proceed. Highly absorbent or friable substrates should be treated with Keim Soldalit Fixativ. A base coat of Keim Soldalit Grob is recommended for substrates which have repaired or filled areas. ApplicationKeim Soldalit should be applied as a two coat undiluted system. Can be applied by brush, roller, or air-less spray with a minimum period of 12 hours between coats. For highly absorbent/roughcast substrates, Keim Soldalit can be diluted with a maximum of 10% by weight of KEIM Soldalit Fixativ. Application ConditionsAmbient and substrate temperature above 5°C and below 30°C. Do not apply in direct sunlight or onto sun-heated surfaces, nor if it is raining or if there is an immediate likelihood of rain. Clean tools with water immediately after use. Images of Keim Soldalit in Use NBS Specifications The NBS (National Building Specification) is a UK-based specification launched in 1973 and is used by building professionals and architects to describe the materials, standards and workmanship of a construction project. Keim provides documentation specific to this product that outline the NBS specifics. You can download these documents in the 'Data Sheets' Tab.