Raise fireplace to create hearth?

pburgh

Member
Sep 8, 2010
20
Merrimack NH
I have a KozyHeat Z42 that currently sits directly on the subfloor. The fireplace sits inside a framed space that runs floor to 15' ceiling. It's the focal point of our great room. What I would like to do is lift the fireplace about 6", create a hearth in front, and wrap the entire column in some an engineered stone product.

The chimney is a straight shot up from the fireplace -- it passes through the roof and rises up about 4' to the cap and roof brace. Is the collar that sits at the roof something that can be loosened so that duct below can slide through?

Is this within the realm of DIY, or should I be calling a chimney shop? I'm a capable builder, but don't know too much about chimneys.

I can take a few photos if need be!

Thanks!
 

Chum Stains

Member
Aug 1, 2014
50
NJ
I have a KozyHeat Z42 that currently sits directly on the subfloor. The fireplace sits inside a framed space that runs floor to 15' ceiling. It's the focal point of our great room. What I would like to do is lift the fireplace about 6", create a hearth in front, and wrap the entire column in some an engineered stone product.

The chimney is a straight shot up from the fireplace -- it passes through the roof and rises up about 4' to the cap and roof brace. Is the collar that sits at the roof something that can be loosened so that duct below can slide through?

Is this within the realm of DIY, or should I be calling a chimney shop? I'm a capable builder, but don't know too much about chimneys.

I can take a few photos if need be!

Thanks!
what type of chimney? Class A?
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,894
central pa
I have a KozyHeat Z42 that currently sits directly on the subfloor. The fireplace sits inside a framed space that runs floor to 15' ceiling. It's the focal point of our great room. What I would like to do is lift the fireplace about 6", create a hearth in front, and wrap the entire column in some an engineered stone product.

The chimney is a straight shot up from the fireplace -- it passes through the roof and rises up about 4' to the cap and roof brace. Is the collar that sits at the roof something that can be loosened so that duct below can slide through?

Is this within the realm of DIY, or should I be calling a chimney shop? I'm a capable builder, but don't know too much about chimneys.

I can take a few photos if need be!

Thanks!
You would pretty much have to dissasemble the chimney pull the firebox out then refra me it. After that put everything back together
 

Chum Stains

Member
Aug 1, 2014
50
NJ
Here is a photo of the upper portion.

I can't answer what class it is.

View attachment 220122
Looks like class A to me.. If you have a ways to support it above the stove you could disconnect it, slide it up, remove your stove to install elevated hearth. Then slide it back down and reconnect.. then you could either leave the chimney height the same (meaning it would be 6'' higher) or you could possible remove the last section of chimney as long as your above the peak..

The chimney will be pretty heavy to slide up and support while you are raising the hearth so make sure you awear of that.. also you will have to wait till the snow clears because you will have to get on the roof to loosen support bracket and storm collar so that the chimney will move.. is there access to all sections of the chimney in side?
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,894
central pa
Yes definatly class a that is easier if you can handle the weight and support it somehow you could lift the chimney as a unit.
 

pburgh

Member
Sep 8, 2010
20
Merrimack NH
Thanks for the replies. I won't be tackling this until the Spring -- just fact-finding at the moment.

The framed area will be 100% accessible as I will be removing drywall... so I will be able to either design a lift to raise everything or disconnect pieces as needed.
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,894
central pa
Thanks for the replies. I won't be tackling this until the Spring -- just fact-finding at the moment.

The framed area will be 100% accessible as I will be removing drywall... so I will be able to either design a lift to raise everything or disconnect pieces as needed.
How tall is the chimney overall?