Wetting behaviour of monocrystal and polycrystalline silicon carbide substrates with melts of 16 silicate glasses was investigated. Different glasses demonstrate various levels of wetting, from no wetting to full wetting. In all cases, wetting of silicon carbide with melts of silicate glass had a chemical nature. Sometimes the drop of molten glass began to bubble. Preliminary treatment of silicon carbide monocrystals affects the wetting behaviour. Varnishing of a primer layer on the silicon carbide substrate may enhance or deteriorate wetting.