1 Comment to “Rocket Mass Heater: Bricks Finished”

  1. Thomas

    Dec 10th, 2010

    Very cool! You know, if you want a source of cheap perlite, it’s a 100% waste product in a lot of 50’s bungalows torn down every week here in Vancouver – you find it a food deep in the ceiling. You can take as much as you want usually. The problem is, there’s a decent chance of there being a certain amount of asbestos in it. But heck, that’ll just improve the insulation value :-).

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