Weatherproof render/stucco

[Remember Wingmen?]

Hi guys,

I'm making a pretty basic oven and have just completed my insulation stage. I would really appreciate some advice on the making my render/stucco weatherproof. Are there any additives that I should include to give it good protection against the elements? Also, are there any advantages in making this final layer extra thick, or would a 10mm render suffice?

Thanks for all your help over the journey FB gang!

[mn8tr]

I do not have an answer to that question but I personally am counting on the liberal coats of exterior paint to protect it from the weather.

[DimTex]

After the three coats of stucco (scratch, 2 top coats) after it cures it should be weatherproof. I painted mine with exterior latex and its been fine. With thick insulation there's no heat transfer from inside to the stucco to degrade the paint.

[Where's Mikes Pizza]

Iv been told something called DryBond would be great after the first coat of stucco but before you color or last coat. I am still having a hard time finding it thought... Iv been looking for a waterproof substance as well...