I have some questions on things, and feel free to input on anything,
Here is my idea.....
Building a custom smokehouse in my backyard.
Measurements are 3'x3'x6' front x5' back
Triple heat source...Propane, Wood, and Electric Hot Plates. There would be a modular terracotta floor in it that would be able to change the hole size or eliminate the hole pending on which heat source I need to use.
Side Steel Heatbox 2'x3'x2' with a piece of 4" steel leading to the smokehouse with a damper in it.
My plan right now is to build the inside of the box with 12 or 14 gauge steel inside, with mesh racks, hooks welded to the ceiling, and ten rows or angle iron welded to the sides for adjusting the racks for whatever i put in there. Every seam to be welded air tight. Then build the outside around it.
Here is my problem. Iowa weather. Thinking steel inside, then a layer or half inch plywood, then a layer of insulation between 2x4's. Screwing the steel to the studs through the plywood. Then another layer of 1/2" plywood, wrap it with leftover tyvek from the house remodel, and finish the outside with culutred stone 3' up, then hardi plank and paint to match the house. Metal roof, dampers on the top sides and on the bottom.
My concern is the insulation. Is it worth the trouble? Will it work? I see alot of plywood smoke house on here. Anyone having trouble with cresote buildup? What is the combustion point of plywood? 400 degrees? I plan on being able to smoke anything in here. Temp range 100 - 250 degrees year round.
Thoughts and input please......