rob zos wrote:if i were to use rubble [bricks and concrete] as mass for my mass heater could it give off any poisonous fumes when heated
as long as the concrete does not have any rubber, plastic or other type of flammable or any galvanized metals, then no, it should not give off fumes. re-using rubble seems to be a great way to reduce waste, and still use it for good. I plan on reusing broken concrete block for my RMH, and I'll let you know if it gives any fumes off, but realistically what can it really give off for fumes?? Flammables give of fumes when burned and rocks, sand, cement shouldn't? A thought anyway.
