Having read and listened to much about RMHs, I am at the point where I need to build one in time for winter.
I plan to mostly follow Erica and Ernie's 6" annex design (possibly with an insulated brick heat riser), though part of me feels I've read so much now I am delaying myself by overthinking the many options.
From a dual wish to save money and placate building regulations, may I have people's opinion on the suitability of using firebricks (photo attached of surplus stock a local guy has), instead of reclaimed red brick (which is quite expensive around here)?
As I am struggling to find any 2nd hand stove pipe here in Ireland, and having read the bendable ducting stuff creates too much air drag, does anybody have any suggestions for cheaper alternatives to brand new stove pipe?
The type of reclaimed brick you want kinda falls into a middle grade between soft lightweight fire brick and Hard Dense Fire/kiln brick it is dead soft
leaving a mark behind when rubbed on concrete /pavement.
Here in the States most of the houses are heated with Fossil Fuel Fired Forced-air Furnaces, This often translates to a complete scraping and Total
replacement after a fire, I have had great luck finding a fire damaged house -look-for boarded up windows and a huge skip/dumpster out in front ,
sometimes I am Dumpster-diving, sometimes I am invited in to go for the Forced-air ductwork. As Forced air is retarded and more trouble than its worth-
I Understand it is very rare on your side of the Atlantic. Demolition crews rarely if ever save old piping and you are using it inside your Thermal Mass Bench
as forms -for you longevity is not an issue. keep looking ! Big AL
Success has a Thousand Fathers , Failure is an Orphan
LOOK AT THE " SIMILAR THREADS " BELOW !
Location: County Kerry, Ireland
posted 3 years ago
Thank you Allen.
Central heating here is nearly always water filled radiator's connected by 15/22mm copper pipe, the contents being heated by a boiler and then pumped around. So, it does seem likely that brand new stove pipe will be needed. The pipe alone will be many hundreds. I wondered if metal air ducting would be of sufficient heat resilience, perhaps after a certain run past the manifold?
The cheap (only due to random surplus) fire brick looks like this: https://www.dropbox.com/sc/ya4br0utj3havxg/AADrdEfQdHvD4Kooev3fSlyRa. I'm somewhat sure I'll be able to work out how to use the odd dimensions to make the needed channels, but wondered about it having the right heat tolerance's and performances - I read a previous post of yours that said that some fire brick is fairly poor for this job.
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''