Installing windows on existing stucco house


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Old 02-26-23, 12:38 PM
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Installing windows on existing stucco house

Hi, I have installed a wood/aluminum clad patio door on my current house. The door install was not too bad but the stucco repair including stucco trim was labor intensive because the door and windows have eyebrow trim.
I would like to replace south facing windows with wooden windows with fin to match the patio door. I'm wondering if it would be practical to just remove a section of the foam trim and then repair/replace after window install. Based on the door install I believe you need about 3 to 4" of stucco removed to get the flashing under the house wrap. See below pictures, pices with X would be removed entirely.

The reason i don't want to remove all of the trim including eyebrow is because I have to make the eyebrow from trim pieces. I removed entire eyebrow when I did the door and recreated it from a template and pieces of trim and it was labor intensive. That was a 6' eyebrow and this one is 10'. Also I think my stucco finish was sprayed and its a bit difficult to match so the less I have to match the better.

Someone told me they had their whole house done w/o removing stucco and I looked at this method but I don't think it can be done with trim around the window because it requires an external metal flashing piece above/below the window to direct water around the window and its quite a bit of fabrication. I included a cross section diagram of this from Pella install doc. So I'm assuming I will have to use fin method.

Thanks for any advice



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Old 02-26-23, 01:17 PM
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If it has foam trim, it is called EIFS, not (traditional) stucco. It's a "synthetic stucco".

The proper method of installation would involve cutting back at least 6" of EIFS so that the window can be correctly flashed, then the EIFS gets patched back in. And yes it's labor intensive. Not what you wanted to hear, I know, but there is no other code approved way to do it. It has as much to do with proper EIFS installation as it does with proper window installation. So there are no shortcuts.
 
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Old 02-26-23, 02:34 PM
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Yes, for the door I bought the normal big box foam trim pieces, installed them and stuccoed over them with the fast drying stucco by loading a trowel with stucco and pushing it onto the trim and pulling off then light knockdown. I recall using a stucco bonding agent also. Got a fairly good match. I would have gladly called a pro for the stucco but at that time probably the job too small - may be I'll try getting a pro to do the stucco repair this time.

Is this method Ok?

I read a lot of online info on stucco repair but did not see any examples that look like mine, probably for the reasons you said so that mystery solved.
I also have 1" foam insulation which complicates matters a bit but original installers seem to hold back the foam a few inches from the door (and I assume windows also) and fill the gap between foam and window with stucco. Foam gets cut back a bit more than original to allow room for new install flashing but I don't think thats a problem.

Also the stucco around the door was paper thin so they could use a standard jamb width door because of foam.

Finally, for the kitchen is it unusual for the bottom of the window to be flush with the the tile? I don't need a wood window here but I don't want vinyl. Should I build up the bottom of the rough opening 4" or so to avoid possible moisture issues?
 

Last edited by AlexH; 02-26-23 at 02:54 PM.
 

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