At the automobile plant, polyvinyl chloride plastic compound "plastisol D-11A" with a thickness of 1-1.5 mm on epoxy primer was applied to the lower surface of the body base and side members for noise insulation and protection against corrosion and abrasive wear.
In case of damage to the protective coating of the bottom without breaking the soil layer, clean the damaged areas from dirt, degrease with a rag soaked in white spirit and apply 1.5 mm thick BPM-1 mastic to the dry surface with a brush. Dry the coating in natural conditions for two days or at a temperature of 90°C - 30 minutes.
In case of significant damage to the protective coating with damage to the primer layer, clean the damaged areas of the surface down to the metal from dirt and rust and apply primer GF-073 to the dry, degreased surface. Apply mastic BPM 1 to the primed areas of the surface with a brush.
If the vehicle's service life does not exceed 1-1.5 years, the overlap of the new mastic layer over the old one should be minimal. If the vehicle is used for a longer period of time with the given underbody coating, apply the mastic over the entire surface of the underbody and wheel arches.
Clean the paintwork of the car body contaminated with mastic with a rag soaked in white spirit.
In the cold season, before using the mastic, keep it in a warm room until the temperature rises to at least 20°C. If the mastic thickens, dilute it with xylene to 3%.
(The source is on the website: «VAZBOOK.ru»)
Clean the paintwork from mastic contamination with a rag soaked in white spirit. Dry the mastic at a temperature of 100-110°C for 30 minutes or 18-20°C for at least 24 hours.