Uninsulated liner not to code?

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Abrahampost

New Member
Sep 8, 2021
1
Vermont
Thanks in advance for the advice.

I have a VT castings Aspen stove on a 25ft exterior chimney(masonry chimney with clay tiled flue) that was installed in 2019 with an uninsulated heavy duty flex liner.

We have had no issues with draft and the first year cleaning went fine and found no issues with the setup. Fast-forward to this season and the same company found issues with the install and recommends a ton of work.

My questions are, is it against fire codes to not have an insulated liner? If my draft is fine and I clean yearly is my current setup sufficient?

My annoyance level is a bit high on this one since the company inspected the same setup in 2020 and deemed it perfectly fine, now wants to do 4k worth if work to install a new liner with insulation. This was not a diy install, the stove supplier installed the system.

Also, a bit unrelated they broke my refractory baffle and tore the superwool in the stove during the cleaning, neither issue is has been addressed by them.
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
26,199
central pa
Thanks in advance for the advice.

I have a VT castings Aspen stove on a 25ft exterior chimney(masonry chimney with clay tiled flue) that was installed in 2019 with an uninsulated heavy duty flex liner.

We have had no issues with draft and the first year cleaning went fine and found no issues with the setup. Fast-forward to this season and the same company found issues with the install and recommends a ton of work.

My questions are, is it against fire codes to not have an insulated liner? If my draft is fine and I clean yearly is my current setup sufficient?

My annoyance level is a bit high on this one since the company inspected the same setup in 2020 and deemed it perfectly fine, now wants to do 4k worth if work to install a new liner with insulation. This was not a diy install, the stove supplier installed the system.

Also, a bit unrelated they broke my refractory baffle and tore the superwool in the stove during the cleaning, neither issue is has been addressed by them.
Inn general yes most of the time insulation is required to meet code. But it depends upon a few factors.

1. Does your chimney being an exterior one have the required 1" clearance from the outer masonry surface to combustible materials.

2. Was the liner tested and specified for use with solid fuel appliances without insulation?
 
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