A glass material for producing insulation layers is provided. The glass material can improve the radio-frequency properties of radio-frequency substrates or radio-frequency conductor arrangements. In one embodiment, the glass material for producing insulation layers for radio-frequency substrates or radio-frequency conductor arrangements is an applied layer with a layer thickness in the range between 0.05 μm and 5″mm and has a loss factor tan δ of less than or equal to 70*10−4 in at least a frequency range above 1 GHz.