Typical roofing materials include steel asphalt shingles stone and wood all in various forms.
Using old tire rubber for roofing.
Manufacturers purchase massive quantities of old tires an average roof requires anywhere from 250 to 1000 tires and dissect the hard rubber rings into small chunks which are fed into a granulating process.
Old tires can be converted into roofing material.
By the mother earth news editors september october 1976 converting old tires into roofing material is an eco friendly construction technique.
Passenger car tires are 55 to 45 per cent light truck tires are 50 to 50 per cent race tires are 65 to 35 per cent and off highway tires 20 to 80 per cent.
During my research i also found the typical percentages of the synthetic rubber and natural rubber rubber mix in various types of tires.
The rubber fragments are then scraped clean of any steel and nylon threads.