“Fireproof” Tiles for Roofing and Walling from Pinatubo Ash
Procedure
1. Boil bloated ash and binder or mixed glue.
2. Press the mixture.
3. Cook in 200° F (93° C) heat.
4. Paint a fire resistant paint so as not to pulverize. This happen if the pressure and heat is not enough or low and with not enough binder, there seems to have dust on top.
1 part binder 4% glue
2.3% resin
2.3% starch from cassava