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]

Originally Posted by 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

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!