Best way to insulate boiler

Best way to insulate boiler

PostBy: tigboy On: Tue Nov 18, 2008 1:47 pm

Hi, everyone. Does anyone out there make rigid insulation to withstand boiler heat? I built my boiler with flat sides to accept rigid insulation. My plan was to have pcs. slide in from ends using a angle iron track.Any maintenance would be simplified by sliding pcs.out of the way. I went to local plumbing place and was told any rigid insulation would melt.I didn't want to use fiberglass ins.like they recommended. Any ideas ?????
Chuck
tigboy
 
Stove/Furnace Make: Harman,Vermont Castings
Stove/Furnace Model: Mk III and Vigilant II

Re: Best way to insulate boiler

PostBy: Dallas On: Tue Nov 18, 2008 1:57 pm

I used a rigid fiberglass with foil on the outside, with my wood burning boiler. It worked fine. I duct taped the seams together.
Dallas
 
Hand Fed Coal Stove: Modified Russo C-35
Other Heating: Oil Hot Air
Stove/Furnace Make: Russo
Stove/Furnace Model: Modified C-35

Re: Best way to insulate boiler

PostBy: djackman On: Tue Nov 18, 2008 3:09 pm

Don't know if it's really "insulation" but I have Micore300 under the hearth for my woodstove.

http://www.gypsumsolutions.com/brand.asp?prod=71

Probably could stand the heat of a water jacketed boiler... 1200degC melting point :shock:
djackman
 
Stove/Furnace Make: 1980 vintage Tarm
Stove/Furnace Model: FT22 (aka 202) installed!

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Re: Best way to insulate boiler

PostBy: tigboy On: Tue Nov 18, 2008 10:13 pm

Hey Dallas,
I was wondering about that same insulation with the foil on outside.Couple of questions:
How thick of ins. did you use?
Was it touching stove, or air gap?
How well did it work?
The boys at the plumbing store told me it would melt with temps. between 190*-230*.
Thanks Chuck
tigboy
 
Stove/Furnace Make: Harman,Vermont Castings
Stove/Furnace Model: Mk III and Vigilant II

Re: Best way to insulate boiler

PostBy: Dallas On: Tue Nov 18, 2008 10:27 pm

As I recall, it was about 2" thick. It was right against the steel of the sides, back and top. It made a big difference, as it was in a small basement of a split level. Without the insulation, it was like an oven down there. Fiberglass won't melt at any of the temperatures you're looking at.
Dallas
 
Hand Fed Coal Stove: Modified Russo C-35
Other Heating: Oil Hot Air
Stove/Furnace Make: Russo
Stove/Furnace Model: Modified C-35

Visit Hitzer Stoves