Win a copy of Permaculture Design Companion this week in the Permaculture Design forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • paul wheaton
  • Jocelyn Campbell
  • Mike Jay Haasl
  • Burra Maluca
garden masters:
  • James Freyr
  • Joylynn Hardesty
  • Steve Thorn
  • Greg Martin
  • Carla Burke
  • Dave Burton
  • Pearl Sutton

Firebrick and Cob

Posts: 80
transportation tiny house woodworking
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
We are building our first RMH, here you see the start of our Brick Heat Riser! It is a very simple process of legos however we have a question about joining the bricks together. We have read that you shouldnt get Firebrick wet? If we use cob (Clay, Sand, Straw) and put this on the firebrick, that would get the firebricks wet. Wouldnt they crack when we burn a fire in it?
[Thumbnail for FOT46F.JPG]
Temp Brick Riser
Posts: 2482
Location: FL
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You can get the firebrick wet to a certain degree. Using cob in contact with the firebrick won't cause erosion of the firebrick so long as you let the project dry before firing.
If you absolutely must fire the project early, a slow fire would be best. You would be using the heat from the small curing fire to dry all materials. Getting the fire roaring hot while there is still a high level of moisture in the cob would be inadvisable.
I agree. Here's the link:
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!