• 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 skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • jordan barton
  • Pearl Sutton
  • Leigh Tate
  • paul wheaton
stewards:
  • r ranson
  • Nicole Alderman
  • Greg Martin
master gardeners:
  • Carla Burke
  • John F Dean
  • Jay Angler
gardeners:
  • Nancy Reading
  • Mike Barkley
  • Christopher Shepherd

Repurposed granite countertop for bench top?

 
Posts: 19
Location: Sleetmute, Alaska
4
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Would a repurposed granite countertop make a decent bench top for a RMH system or would it likely crack from thermal shock?
 
Rocket Scientist
Posts: 4542
Location: latitude 47 N.W. montana zone 6A
1597
cat pig rocket stoves
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi T;  welcome to Permies!
Yes, a granite counter top will work on top of the mass no problem.
The surface of a mass generally runs around 100 F  or so.  I suspect granite could take 300-400 F before cracking.
It would not do well over the core.

Are you building a RMH yet ?  Or still thinking about it.
I highly recommend getting a copy of the Rocket mass heater builder guide, readily available on Amazon.  

And here are a couple of other rmh sites.  https://donkey32.proboards.com/   and http://batchrocket.eu/en/     Both have great information!
5a916-dragon_of_flames_by_elegantartist21-d4pya6u.jpg
[Thumbnail for 5a916-dragon_of_flames_by_elegantartist21-d4pya6u.jpg]
A proper flame pattern
 
gardener
Posts: 3636
Location: Cincinnati, Ohio,Price Hill 45205
490
forest garden trees urban
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
A lot of counter tops are fake stone,  glued together composit stone or they are stone but they have waxes,  sealants or other treatments that might  undergo catastrophic change in the face of high heat.
 
If you have a bad day in October, have a slice of banana cream pie. And this tiny ad:
The Wheaton Eco Scale
https://permies.com/t/scale
reply
    Bookmark Topic Watch Topic
  • New Topic