Smoker insulation?

[boozzer]

OK been awhile but finally got my smoker in the shop and ready to start welding and had a few questions to run by you all. Insulation, I leave in Nebraska so the weather changes every 10 min. Here is what i am thinking. in stead of going with 1/4" Plate I am going to go with a 3/16" with water heater insulation then a thin plate for the exterior for the smoke box. 1/8" for the lid the same way and the Fire box will be 1/4" with no insulation. Thoughts? on water heater insulation or is there something that might be a little better heat reducer or more economical? you can view my plans on my profile.

 

[daveomak]

Boozzer, morning....  My 2 cents....  3/16" with insulation and a skin is overkill...  think about 12/14 gauge with 1" rockwool insul.... put the  money in a really good insulation... then skin with something light... 26 gauge or so....  while at it, insulate the firebox... The skin will be difficult to weld so I would use self drilling screws and high temp silicone sealant... 

Just throwing out some ideas.... Dave

 

[boozzer]

thank you Dave one thing I should of mentioned. This will be a traier unit made out of a old pull behind air compressor. didnt know if that would make a difference

 

[qobsession]

About Selecting Thermal Insulation

A material's resistance to temperature and its ability to block heat are important factors to consider when

choosing thermal insulation. R-value measures the material's capacity to slow heat flow; the higher the R-value,

the better the material insulates. The chart below shows R-value for 1" thick insulation. To calculate the

R-value of additional thicknesses, divide the material's thickness by its K-factor. K-factor measures the heat

flow rate from one side of the insulation to the other; the lower the K-factor, the better the material insulates.

Use the chart to find the insulation material that best suits your application.

If insulating below 0° F, use polyethylene, foam rubber, aerogel, or polyimide insulation.

About Selecting Thermal Insulation

A material's resistance to temperature and its ability to block heat are important factors to consider when

choosing thermal insulation. R-value measures the material's capacity to slow heat flow; the higher the R-value,

the better the material insulates. The chart below shows R-value for 1" thick insulation. To calculate the

R-value of additional thicknesses, divide the material's thickness by its K-factor. K-factor measures the heat

flow rate from one side of the insulation to the other; the lower the K-factor, the better the material insulates.

Use the chart to find the insulation material that best suits your application.

If insulating below 0° F, use polyethylene, foam rubber, aerogel, or polyimide insulation.

About Selecting Thermal Insulation

A material's resistance to temperature and its ability to block heat are important factors to consider when

choosing thermal insulation. R-value measures the material's capacity to slow heat flow; the higher the R-value,

the better the material insulates. The chart below shows R-value for 1" thick insulation. To calculate the

R-value of additional thicknesses, divide the material's thickness by its K-factor. K-factor measures the heat

flow rate from one side of the insulation to the other; the lower the K-factor, the better the material insulates.

Use the chart to find the insulation material that best suits your application.

If insulating below 0° F, use polyethylene, foam rubber, aerogel, or polyimide insulation.

 

[qobsession]

Sorry about the above guys.

It will not let me paste the chart of most insulation types.

 

[qobsession]

If anyone can help me i have a chart of all the insulation type and values. It does not like the table.

 

[qobsession]

 

[qobsession]

The 6th time is the charm. Mineral Wool wins.