cheap excellent material for oven walls

[vintagespeedwerks]

cant find it online at homedepot, but here is what lowes shows.

Hardibacker 3' x 5' x 1/4" Ceramic Tile Backerboard
Item # 11640
Model # 220001
$10.98

Same stuff??

[Crimson]

yep same stuff

[blewis999]

i am not building an oven, but wanted to comment. I was using a track torch to cut some 1/4 inch steel diamond plate. The plate was already in place, so 3 inches under needed to be protected. the hardi backer worked for 20 feet of direct oxy torch 3 inches above.

Don't know if this helps, just my experance.

[Banditperformance]

3" AWAY slag blast. Wow, that's pretty impressive acctually. I feel much better about getting hardi for my oven interior

[bzer1]

I would caution you on one thing when using the backerboard. This is a compressed fiber product which means that it will create it's own dust. I would suggest sealing the surface to make sure that loose fibers don't get into you freshly coated parts. Personally I would be tempted to use ceramic to coat it as that will hold up to repeated heat cycles without a problem.

[rap169]

anybody have any problems with dust from this board?

[rap169]

im thinking about using it since sheet metal has gone through the roof. I priced some 18ga galvanided at 60 bucks a sheet. ouch!

[krusty2111us]

It only took 3 1/2 sheets of 18g galv 4 x 10 to do the interior of my 4 x 4 x 4 oven. With a good amount of excess metal for a smaller oven. A little pricey, but I think the product will last longer. One of those; "Way the cost of initial expense vs repeated expense". Just my 2 pennies

[Banditperformance]

I'm using Hardi Backer initially, then when money allows, I'll cover the hardi with light gauge tin. My oven is really raping my bank acct right now so If I can get it opperational, then tin the inside later, that will be best I think

[ublinkd]

I'm using Hardi Backer initially, then when money allows, I'll cover the hardi with light gauge tin. My oven is really raping my bank acct right now so If I can get it opperational, then tin the inside later, that will be best I think

I second this approach! I will be starting mine early next year and plan to do exactly what you are talking about. I am up for saving some money!