Fix for buried stucco
I have a 1960s coastal california home (95062) (3c). The home is wood frame with a stucco exterior. The home sits above a crawlspace.
灰泥目前被埋在整个房屋周围约2-3英寸的泥土中。我相信解决方案是挖掘，切成灰泥，与茎墙接触一英寸左右，然后再重新放置该地点，从而降低到处的污垢以保持适当的排水。
My main problem is the reality of how much dirt I’ll be moving here. Probably a small amount for a construction crew but its a lot for a weekend warrior. Additionally, putting in a pipe for a french drain or similar system does not leave an obvious place to daylight the pipe.
Would digging down and installing a foot or so of aggregate around the perimeter of the building be beneficial? The building has a 16″ overhang around the perimeter which keeps most rain off the stucco but of course not wind-driven rain.
I believe this solution is better than what I currently have but still not ideal.
I’ve attached a before and after image so you can see what I’m suggesting.
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Replies
史蒂夫，
I'm not sure substituting aggregate for what is there now make any appreciable difference once the stucco is cut back.
My thoughts on the aggregate would be that is dries faster than dirt and helps to keep moisture even further away from the stucco. Point taken on the biggest difference being the cut back stucco, however.
Do you have any problems that you are aware of from this construction detail?
If you don't have them adding gutters may be a good improvement.
You could easily make a problem where none existed.
No problems that we are aware of yet. However, the walls are currently uninsulated and we are planning to insulate. My understanding is that stucco in the dirt isn't good to begin with and insulating the walls can actually make everything worse as it slows the walls drying time if they are sucking up moisture through the stucco.
The house has gutters and the discharge points are ok.
史蒂夫，
I agree that one way or another eliminating the moisture wicking into the wall through capillary action from the buried stucco is a good idea. A couple of other benefits to replacing the soil with aggregate are that it leaves a gap to deter insects infestations, and reduces splash-back.
但是您要观看的是，它不会创造一条向您的基础引入水的路径。理想情况下，紧邻房屋的表面应倾斜，并对水分持谨慎态度。
您可以进行kerf剪切并安装小闪光，以使您毛细管休息。
Be careful with gravel against un-sealed foundation. I helped fix a wet basement where the home owner has done exactly this. Had to remove all the gravel and back fill with compacted and sloped limestone screening.
Make sure there is a WRB under your stucco before you insulate. If you don't have one follow the guidelines here:
//m.etiketa4.com/article/insulating-walls-in-an-old-house-with-no-sheathing