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mahoopes 03-02-2013 11:31 AM

Painting Stucco After Filling a Crack
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I filled a fine, horizontal crack in my stucco exterior with clear caulk and allowed it to dry. Now I need to paint over the repair, but my first attempt, using acrylic craft paint, looks really obvious (see attached picture). Any suggestions? Just try again with a better color match? The location is in the entryway and does not get wet. Thanks.

oh'mike 03-02-2013 12:16 PM

I moved this to the painting section for you-----

jsheridan 03-02-2013 01:30 PM

Mahoopes, you have to be careful caulking stucco. You may have seen stucco ceilings that look like the Amazon River tributary system, that's the result of using caulk. Caulk will have a tendency, even with flat paint over it, to "shine" because of the difference between the "sealed" caulk surface and the porous stucco. For future reference, they sell a knife grade compound for patching stucco.
As to your current situation, that's a bit of a tough call. Firstly yes, try a better match, if you don't have the paint or it's unpainted. The hardness and porosity of a surface will affect color so it may be a difficult thing to match. Do you have any electrical outlets outside that you could remove and chip a piece of the stucco out to take to a real paint store, that would improve your starting point.

joecaption 03-02-2013 02:02 PM

Read the tude of the stuff you used.
Does it say paintable?
If it's 100 % silcone it can not be painted.

cdaniels 03-02-2013 02:27 PM

It's not silicone it's got paint on it.

chrisn 03-02-2013 04:45 PM


Originally Posted by joecaption (Post 1128291)
Read the tude of the stuff you used.
Does it say paintable?
If it's 100 % silcone it can not be painted.

tube maybe?

Brushjockey 03-02-2013 05:18 PM

Sometimes i have 'tude..

And you said you we're using acrylic craft paint.. on an exterior?
Why not use actual exterior paint? If you are just painting the caulk- chances are pretty good they will stand out.

mahoopes 03-02-2013 06:42 PM

:eek:Thanks all -- I feel smarter already, though belatedly. I will check the 'tude of the caulk and pray it's not silicon. I only used acrylic paint because I can color match it on-site. I do have an outlet from which i could take a sample to the real paint store, and that's a great tip, thanks. Hope I haven't messed this up irreparably!

mahoopes 03-03-2013 10:42 AM

D-oh, yes, I used silicon on the stucco crack. Thoughts on the best recovery? I see some referenced online to roughening the silicon and spackling over it . . . .

oh'mike 03-03-2013 11:21 AM

Use a sharp knife and cut it out-----nothing will stick properly to it---

mahoopes 03-04-2013 10:23 AM

No can do - it's just a hairline crack, and I smeared the silicone caulk 1/4 inch onto the stucco on each side. On my way to Sherwin Williams to get their paintable silicone caulk. Then will mask it off and clean it as well as possible to remove the acrylic paint, etc. Oy.

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