Why is it generally not recommended to burn waxed cardboard in a fireplace because of chemicals released, but companies like Enviro-log are recycled waxed cardboard and claim they burn cleaner than wood?
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I came across someone saying they don’t use firewood anymore, they only use “recycled wax cardboard logs. Cheaper, cleaner and more economical.” Out of curiosity, I googled “recycled wax cardboard logs” and got [mixed search results](https://i.imgur.com/2wL8aJ9.jpg), some saying you should never burn cardboard pretreated with wax as there can be toxic fumes, and then others saying waxed cardboard logs are the cleanest burning thing in the world. What’s the truth?
Well to start, just because it’s recycled wax cardboard doesn’t mean all the same chemicals on other cardboard is there.
Because cardboard and wax on their own isn’t bad to burn, cardboard is fine, and wax is what we make candles out of.
The real issue with card board is when they’re painted and/or treated with other chemicals. That’s the stuff that’s no good.
Exceeepppptttt I’ve burnt cardboard indoors to start fireplaces all my life and never had a problem. As long as your chimney is working and the space is somewhat ventilated you’re not gonna have a big build up of toxic fumes, really ideally it’ll go up the chimney if it’s working properly.
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