Anodized aluminum patio door installed over copper flashing
I’ve seen some similar questions but thought I’d ask my specific issue.
I have a very large Fleetwood aluminum patio sliding door that was installed over copper flashing with no material in between. The bottom of the window track/frame is anodized with a black coating.
我们今天只了解到在Bituthane胶带等之间不使用真正的障碍的错误。然而，灰泥已经走到外面（仅棕色涂料），内部的板岩和修剪。
It will be very expensive to remove everything and start again. However it looks like we could gently pry up the bottom rail and insert building paper most of the way back. Or another material (not sticky, that won’t be able to slide under).
This area gets a lot of rain in the winter but is dry for several months (N California).
Question is, can anyone say with any certainty what kind of problems to expect in 5, 10, 20 years? Of course it will be cheaper to address it now while the contractors are still at the jobsite etc. But still a few $K and more delays.
Thank you, community
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Replies
None expert opinion, but I think it will be better to sort this issue now by removing and reinstalling the slider.
Typically a door would be set in sealant on top of the flashing, which could be separating the materials, and would prevent the easy insertion of another material. I would expect the contractor to follow the manufacturer's instructions for installation, such as the bed or beads of sealant. If they did not, then they should reinstall the door correctly for no extra charge.
You'll get galvanic corrosion, which is just a fancy way of saying that the aluminum will rot out more quickly due to dissimilar metals acting like small battery.
All you need is an interface material between. Sometimes this is stainless steel, but in most cases it's some kind of electrically insulating material like the tape you mentioned. For a retrofit, you might try rigid HDPE sheet to see if you could slip it in between existing, installed, materials. I've never tried this though, so I don't know how well it would work.
The anodized coating will actually provide some protection, but any scratches are places where corrosion will start. It's difficult to really say how bad of an issue this might be in the future, but I would try to do as much as you can to remedy the problem now.
Bill
确定无疑？否。涉及的水分和盐量，阳极涂层的质量以及铝（阳极）的厚度都起作用。在缅因州海岸，它可能会持续5至10年。如果您是内陆并且有一个不错的屋顶悬垂，它可能会持续数十年。但是由于故障意味着要替换门，也可能会造成水损坏，因此在您走得更远之前，咬着子弹并重新安装门可能是有意义的。
非常感谢您的答复，这非常有帮助！