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myf355spider

Exterior patio door jamb rot replacement in stucco - weatherproofing?

myf355spider
8 years ago


Houston, TX area - humid climate with a fair amount of rain, house style is Tuscan/Mediterranean stucco


My house has Jeld-Wen Fiberlast double patio doors. I'm working on sourcing a new frame kit (jamb set) from the local Home Depot or Lowe's. The original had completely rotted through in sections. I've cut out most of the rotted wood and gotten to solid studs. The house is stucco and I'm trying to see if there is an underlying problem before I just replace the door set. Several years ago, I would get a bit of water in the house during heavy rains. I had the balcony rail-to-house interfaces caulked as well as the top of the decorative stucco trim framing above the doors. I haven't had water in the house since, but the rot has continued to grow. When pulling the door frame, I found several areas where the plastic, felt, tape and other seemingly waterproofing materials were torn and/or stapled through. In particular there were two rusty, bent "rogue" nails (one on the side and one in the header) that corresponded with the worst, most intense sections of rot. That would leave me to believe that water was following them down and into the jamb/frame. But that doesn't exactly tell me where they were picking up water from. Should I try and cut them off or tear them out? I'm not totally versed in stucco water protection. Is this supposed to be totally sealed, or breathe in layers somehow? Is there a tape I can use to repair/reseal the torn sections to the original stud framing? Any other suggestions for digging into the plywood sheathing and subfloor inside that is rot-stained (but not soft) without disturbing the exterior stucco?


I've talked to local general professionals in the past and never appreciated their competence with stucco and specialists have been difficult to schedule. That's my next step, but I thought maybe someone on here would have some experience.


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Exterior shot from 3 years ago.

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Interior shot after damaged drywall removal


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Interior studs/subfloor shows evidence of previous water intrusion, but isn't soft and I haven't noticed any dampness in 3 years.


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Paint peeling on original jambs (taken 3 years ago) and showing stucco decorative trim. Is the panel groove of the higher wall channeling water into the frame by chance?

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After pulling rotten jamb sections


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Notice rusty nail end spike, which is the center of the rot damage. Also slits in plastic.



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Header partially cut out


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Rogue nail imbedded into header


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Right side jamb. Most of the nail heads that secured the original jamb to the studs had rusty heads and appear to have been channeling water into the studs.



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More signs of damaged weatherproofing - closeup of above.


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