Hello - we installed a Hearthstone Greenmountain 40 a few years ago. Mostly we love it but have had various issues with the chimney over the years - most started before we converted the chimney to burn wood.
The chimney was used by the oil burning furnace located in the basement for decades and coal prior to that. The clay pipe liner was in decent shape so we had it cleaned and continued to use it as is for a few years. But whenever it rained the section of the chimney visible in the attic became wet. The first thing we did to try and address this was to replace the copper flashing. That helped but it didn’t eliminate the water completely. In any case we moved on to the next phase of our larger renovation project.
Eventually we removed the oil furnace and repurposed the chimney by lining it with an oval double walled insulated liner so that we could install a wood stove as a supplemental heat source.
The stove worked fine but some moisture continued to plague us in and around the chimney penetration on the attic. The next action we took was to add a crown to the chimney. This helped but it wasn’t completely addressed until we had another contractor spray the brick and the crown with water proofing. This has kept water from the attic 100%. A small crack has developed in the crown so we assume that we will caulk and paint when we in sweep in the spring. So that’s the history.
So this winter I was surprised by ice forming on the surface of the asphalt shingles. I’ve included some photos. We generally use the stove when it’s forecast to be below 30 overnight. We use the catalytic mode. And we choke it all the way down to help the burn last overnight.
The chimney pipe is about 36’ from stove to cap - in a straight line.
Any ideas on where the ice/condensation is coming from?
The chimney was used by the oil burning furnace located in the basement for decades and coal prior to that. The clay pipe liner was in decent shape so we had it cleaned and continued to use it as is for a few years. But whenever it rained the section of the chimney visible in the attic became wet. The first thing we did to try and address this was to replace the copper flashing. That helped but it didn’t eliminate the water completely. In any case we moved on to the next phase of our larger renovation project.
Eventually we removed the oil furnace and repurposed the chimney by lining it with an oval double walled insulated liner so that we could install a wood stove as a supplemental heat source.
The stove worked fine but some moisture continued to plague us in and around the chimney penetration on the attic. The next action we took was to add a crown to the chimney. This helped but it wasn’t completely addressed until we had another contractor spray the brick and the crown with water proofing. This has kept water from the attic 100%. A small crack has developed in the crown so we assume that we will caulk and paint when we in sweep in the spring. So that’s the history.
So this winter I was surprised by ice forming on the surface of the asphalt shingles. I’ve included some photos. We generally use the stove when it’s forecast to be below 30 overnight. We use the catalytic mode. And we choke it all the way down to help the burn last overnight.
The chimney pipe is about 36’ from stove to cap - in a straight line.
Any ideas on where the ice/condensation is coming from?
![[Hearth.com] Chimney mystery](/talk/data/attachments/333/333677-24ca7e3b4a4725d36bd277c7da3836be.jpg?hash=oCHMlaJn_g)
![[Hearth.com] Chimney mystery](/talk/data/attachments/333/333678-ec0f067436a435a4f1b3617dc2f6dfb4.jpg?hash=199bu_XV9e)
![[Hearth.com] Chimney mystery](/talk/data/attachments/333/333679-13136176a07d2dd1015a9f2ceb431fcd.jpg?hash=xouKe6mUIP)
![[Hearth.com] Chimney mystery](/talk/data/attachments/333/333680-f0cd5b5acbfd741bea1cb6fafdce9fbe.jpg?hash=Fr3bC0RHNw)
