Ponderosa and old chimney

[Dfolk]

I have home that was built around 1900 with a 12”x8” chimney that is about 23’ tall. The fireplace had been closed off and when I opened it up it appears to have had a 6” pipe going up it at one time but it had been removed. I want to put a ponderosa woodstove that is pretty old as well in. Let me know the dos and don’t on this. I’m currently considering removing the mantle and replacing with cement board and running 6” single wall pipe up the chimney.

 

[begreen]

Single-wall pipe can not be run up the chimney. It must be an insulated, stainless steel liner in this case.

There are other serious issues here. It looks like there is wood right alongside the brick on the right side. The Ponderosa being an unlisted stove needs 36" clearance in all directions. This can be reduced to 12" with proper ventilated wall shielding.

 

[Dfolk]

Single-wall pipe can not be run up the chimney. It must be an insulated, stainless steel liner in this case.

There are other serious issues here. It looks like there is wood right alongside the brick on the right side. The Ponderosa being an unlisted stove needs 36" clearance in all directions. This can be reduced to 12" with proper ventilated wall shielding.

https://www.lowes.com/pd/Forever-Ve...less-Steel-Double-Wall-Chimney-Pipe/999958249

These don’t say they are insulated are they right for the application? Thanks!

 

[begreen]

That is an uninsulated liner. It needs an insulation blanket purchased and then added on site. The do make preinsulated liners if that is preferred.

Pre Insulated Chimney Liner Kit | Insulated Flexible Chimney Liner Kit - Rockford Chimney

Free shipping on Pre Insulated flexible chimney liner kits. The Pre Insulated chimney liner is UL Listed & features 1/2" insulation to keep flue gases hot.

www.rockfordchimneysupply.com

The stove is highly radiant. It will cast out a lot of heat from all sides. It will need a proper hearth and combustibles protection for any wood within 36". What is the plan for this?

 

[Dfolk]

That is an uninsulated liner. It needs an insulation blanket purchased and then added on site. The do make preinsulated liners if that is preferred.

Pre Insulated Chimney Liner Kit | Insulated Flexible Chimney Liner Kit - Rockford Chimney

Free shipping on Pre Insulated flexible chimney liner kits. The Pre Insulated chimney liner is UL Listed & features 1/2" insulation to keep flue gases hot.

www.rockfordchimneysupply.com

The stove is highly radiant. It will cast out a lot of heat from all sides. It will need a proper hearth and combustibles protection for any wood within 36". What is the plan for this?

For the floor the thought was to put 2” thick concrete pillar caps and either remove the mantle and put cement board on it some sort of air cooled heat shield but am open to options on all this.

 

[begreen]

A proper ventilated heat shield at the back is a good plan. That will reduce the rear clearance down to 12". The stone cap hearth is ok, but it will need to extend 18" beyond the stove in all directions according to NFPA.

Floor protection for an unlisted wood stove.

I recently completed my first wood stove installation. I was having trouble finding examples of floor protection for an unlisted stove following the protocols described in the NFPA-211, so I figured I would share what I ended up building. First, here are the NFPA-211 specifications for an...

www.hearth.com

Has the insurance company been checked with to see if they are ok with this installation? Many will not permit an unlisted stove.

 

[Dfolk]

Thank you! After looking at the risk I’m going a different direction and closed off that chimney