Inevitable effect of corrosion on the body of the car, is it worth it in the garage or racing down the road. There are several ways to protect the metal against atmospheric corrosion: passive, which consists in isolating the metal from contact with atmospheric exposure to air, active, in which the protective agent forms on the surface of the metal against atmospheric corrosion resistant coating: transforming which maps already had time to oxidize layer of metal in the ground, stable against the effects of oxygen, water and salt, cover the road. The passive means of protection are also a variety of putty to protect the underbody. Of coatings of mastic differ in that they are prepared on the basis of bitumen, and sometimes a rubber or resin. In addition, they added graphite, fiber, oils. Mastic is applied to the bottom of the car body with a thick layer. Forbes may not feel the same.
This provides stability of the coating to mechanical stress of flying from the wheels and stones, but not least, reduces noise due to damping effect of mastic. However, be aware that the sealant in the gap does not fall, and therefore its application to gap must be processed by a corrosion-resistant composition, such as "Movilem," NPM-ML. The most widely used mastic "Avtoantikor epoxy to the bottom", "Avtoantikor to bottom rezinobitumny", "Anticorrosive bitumen to the bottom "," Mastic asphalt corrosion "," Mastic shale car MCA-2 ". The most durable coating provides a first paste ("Avtoantikor epoxy to the bottom"), but its application is associated with great effort. At the same time the use of MSA-2 is easier, but does not give the same effect – the protective properties of its 1.5 … 2 times weaker. Experience has shown that contrary to earlier popular belief about the impossibility of epoxy and bitumen mastic to repair modern diplazolnyh coatings are quite suitable. However, the repair of defective parts must be completely clean to metal, primed "Avtogruntom" or GF-200 GF-021, or "Avtogruntom tsinkonapolnennym" and only then make mastic coating vperehlest.