Not only is the concentrate easy to process – it is also quite simple to apply coating compounds made from SILRES® BS 710 as well: they can either be sprayed onto the substrate or spread on with a roller or brush.
The coating starts out as a liquid, but when exposed to atmospheric humidity, it cures from the outside in. The surface is no longer sticky after about four hours. A curing time of a day or more produces a strong silicone film that permanently bonds not only to many porous mineral substrates, but also to wood and epoxy resins – no need to treat the substrate with a primer ahead of time.
Adhesion tests have shown that the most suitable of these substrates are concrete, brick, plaster, sandstone, sand-lime brick and natural stone. The tensile adhesive strength of unprimed sand-lime brick, for instance, has been measured as 1.30 N/mm2 – a value frequently encountered in the construction materials industry for floor coatings on mineral-based substrates. Tests also showed that glass or painted metals need to be treated with a suitable primer in order to achieve the adhesion necessary.