I'm performing maintenance on an old structure (70+ years old). This structure has a type of tile I've never seen before. The idea I have for sealing the outside is to apply something like plaster or stucco to the outside to seal places where wasps enter the tile, etc. The tile has mortar between the tile. I'm not looking for something that adds structural strength (reinforcement) to the tile, but it's a nice bonus. I'm guessing to trowel the mixture on to the exterior walls (14' high?), wait for the mixture to cure, then use something like a Wagner sprayer to paint it all white. What I don't know is: - what material to use - is this a good idea - is there some other approach I should consider TIA Mike

Are you talking about ceramic tile? If so, how thick is it, what is it on and where are the wasps going? Also if so, it would seem more logical to fix any deteriorated grout (which would be about the only place wasps could enter). You wouldn't be able to just slather some cementatious material over ceramic tile without first attaching lath. Without further info, I would say it is a terrible idea.

stucco/plaster/mortar for exterior?

Jul 01, 2015 21 Replies

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dadiOH 11 years ago

Portland cement & sand. Easiest if you just buy bags of pre-mixed stucco/mortar.

If you just want a thin coat (stucco usually winds up around 5/8 thick) you might consider thinset mortar. I wanted to plaster over a block garden wall a few years ago and used it because I find it much easier to apply than regular stucco mortar.

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TomR 11 years ago

I don't know, but I am sure that if you do Google and YouTube searches for something like "stucco brick wall" you will see lots of good information on what the use, how to apply it, etc.

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