Possibility of increase of fire safety of VPS-58 glass fibre plastics and carbon fiber-reinforced plastic the VKU-51 brands by putting fireproof swelling-up fireproof paste of the VZO-9kh brand is investigated. Complex researches of physicomechanical, fire and heatphysical properties of fireproof paste of the VZO-9kh brand are conducted. By results of researches it is established that fireproof paste of the VZO-9kh brand corresponds to qualifying standards and can be applied to increase of fire safety of designs from polymeric composite materials.