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Kast-O-Lite 30

Castable refractory 

Price $15.00 per 5 pound plus shipping.

Shipping will be calculated on your entire order of materials.


Contact me PM with your order.


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Hard refractory provides armor against both heat, flame and mechanical damage being poked and scraped by work going in and out. Kast-O-Lite 30 works well in around a 1/2" layer but some folks like 1/4",  others folks like more.

Approximate mixing is 1.2 gallons per 55 pounds or 2.79 ounces per pound.

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From Frosty

The best cure method according to the maker is to treat it just like hydraulic concrete. It water SETS, it does NOT DRY. These are two entirely different things. Read up on working, and curing a patio or shop floor. Portland cement, concrete and Kastolite set and cure very closely to the same in time and steps. Kastolite refers to concrete procedures as THE way to cure Kastolite for maximum strength and temperature rating. 

Except for water % details the comparison is across the boards close enough to the same as to be interchangeable. 

So, when it sets close it up in a 100% humidity atmosphere for up to 7 days. We do NOT need a max strength cure, we aren't subjecting it to the kinds of forces temps and atmospheric changes a commercial forging or scrap furnace does.

Frosty The Lucky.

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