Aloha!

[C5dad]

If you know anyone at the local power plant/sugar mill, you can have them check with their maintenance department on where they get the insulation. You may be just so lucky to score some "off spec" stuff because it got wet - you'd be surprised what maintenance departments/purchasing tosses!

Chris

[Sananguero]

Thanks for the info guys, I started checking around and finally found someone that could order the stuff, but there on vacation for a week... typical hawaii... hehe.... ok well considering it is extremely wet on the BIsland maybe I should pick something else to cover with. What would be the best material to make a waterproof coat with?

[Sananguero]

Aloha everyone,
Getting nearer to finishing off the dome. Will post some more recent pics soon. I have decided to insulate the dome with vermicrete due to the fact that its easier for me to get and will be cheaper. I still would like to finish the outside with lava rock, but realize I need something that is waterproof to seal the vermicrete layer. What is the recommendation that you folks would have? We get a lot of rain in Hilo/Puna, wettest city in America! thanks in advance

Karl

[dmun]

In wet climates, I think you should take your cue from the local structures. My guess is that there aren't many lava-rock roofs there.