I've always said that you need a roof over your outdoor oven, but I'm trying to prove myself wrong. Building a roof over your oven is no simple chore, and that's why so many ovens are left roofless and are damaged by rain and snow.
A couple of weeks ago I added more insulation to my brick oven, and I changed my ratio of perlite to Portland cement. Normally I use 6 parts perlite to one part dry Portland, and the perlite holds together because of the Portland,but it's not terribly robust. Over this layer I used 6 parts perlite to 2.5 parts dry Portland. This cuts way back on the insulation value because all that Portland provides highly accessible thermal boulevards for the oven heat to escape through the dome, but here, I was interested in creating a rugged exterior that wouldn't require a stucco or a roof. Time will tell, and I'll let you know how things hold up.
new rugged exterior (I hope)
oven by pond
new rugged exterior (I hope)
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