Author Topic: Insulating a mash tun  (Read 823 times)

Offline zorch

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Insulating a mash tun
« on: May 17, 2016, 02:59:13 PM »
I have a gas fired RIMS setup, and lately I've been thinking about insulating my mash tun in order to save on fuel.
I know others out there do this, but I'm unclear as to what materials work best.
Anybody have any recommendations?

Offline klickitat jim

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Re: Insulating a mash tun
« Reply #1 on: May 17, 2016, 03:03:28 PM »
I made a slip on coozie out of an old foam yoga mat. Its rare that my temp drops enough that I need to hit the fire, but if I do I just remove the insulator and flame on. Mine isn't rims, its direct fire.

Offline zorch

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Re: Insulating a mash tun
« Reply #2 on: May 17, 2016, 03:09:22 PM »
I made a slip on coozie out of an old foam yoga mat. Its rare that my temp drops enough that I need to hit the fire, but if I do I just remove the insulator and flame on. Mine isn't rims, its direct fire.

I suppose I used the RIMS acronym incorrectly... My mash tun is also direct fired.  I just use a pump to recirculate during the mash, but it does have a PID controller that kicks the flame on automagically when the temp drops.

So ideally I'd like a material that I can leave on the whole time (and won't burst into flames...).

Offline Stevie

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Re: Insulating a mash tun
« Reply #3 on: May 17, 2016, 03:39:40 PM »
A buddy made a jacket for his tun using a sheet of stainless and some "fireproof" insulation. I used quotes because some of the insulation around the valve did end up burning. I guess fireproof means ignition-proof in this case.

Offline brewinhard

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Re: Insulating a mash tun
« Reply #4 on: May 17, 2016, 04:53:25 PM »
Sorry, no direct fire here. Just a schwag 10 g cooler that I wrap in a huge beach towel. Rarely lose 1degF over 60 minutes.

Offline klickitat jim

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Re: Insulating a mash tun
« Reply #5 on: May 18, 2016, 12:42:42 AM »
That being the case I think I would just buy gas. I think a miracle material would set you back more than a few gallons of propane

Offline HoosierBrew

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Re: Insulating a mash tun
« Reply #6 on: May 18, 2016, 12:57:39 AM »
Sorry, no direct fire here. Just a schwag 10 g cooler that I wrap in a huge beach towel. Rarely lose 1degF over 60 minutes.


Same here. I wrap mine in a sleeping bag. Temp loss is ~ a dF, too.
Jon H.