Forno Bravo Forum: The Wood-Fired Oven Community

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-   -   waterproof outer layer (http://www.fornobravo.com/forum/f16/waterproof-outer-layer-14540.html)

marios 10-08-2010 01:31 AM

waterproof outer layer
 
Hi guys, i was recommended to cover my dome and insulation with an exterior stucco with a waterproofing additive. I am planning on curing my oven after finishing the insulating layer (is this correct?)...my question is, should i cure after applying the waterproof stucco or should i cure after the insulation (blanket and perlite concrete) and then apply the final finish. The reason i am unsure is that by curing i am driving the moisture out and as such it dosent seem to make sense to put a moisture barrier on top to stop this process. Or will the moisture find a way out anyway even if covered with waterproof stucco?
Any help would be greatly appreciated - dont want to fall at the last hurdle!
many thanks
George

kebwi 10-08-2010 09:18 AM

Re: waterproof outer layer
 
I cured with full insulation, but with no exterior stucco at all. I got great flumes of steam. I can't imagine how that moisture would have ever escaped if I had applied my waterproof stucco first.

On the plus-side, living in wet Seattle, my three-layer Quikrete-with-acrylic-fortifier exterior has worked like a charm. The entire top of my oven is a planter bed which I intentionally water (drench) and I have yet to see a drop of water inside my oven.

marios 10-08-2010 11:41 AM

Re: waterproof outer layer
 
thank you! think i will go down the same route as you and cure with full insulation but save the outer stucco until after 10/20 firings

fxpose 10-08-2010 12:31 PM

Re: waterproof outer layer
 
I also used Quikrete QuikWall SBC with acrylic fortifier. So far I only have just a coat of it over a couple layers of base coat stucco. I will be applying a second coat soon.

marios 10-09-2010 01:27 AM

Re: waterproof outer layer
 
thank you for your replies guys - i was just wondering though, how did you protect the whole set up from the elements (rain, moisture) while you were curing , or in fact before the waterproof layer went on.
Was it just a case of maybe a blanket and waterproof tarp on top?

fxpose 10-09-2010 08:28 AM

Re: waterproof outer layer
 
Most people either use tarp or erect a canopy over the oven.
I did not have to deal with any of that because I'm in L.A. and we don't get much rain at all.


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