What is the best way to renovate a basement after a flood?
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What is the best way to renovate a basement after a flood?
你好，我正在进行洪水后的地下室改造，最近才在你们的网站上看了一些资料。我意识到我可能犯了一些错误，希望你能给我一些建议，告诉我该怎么做才能把未来的问题降到最低。
2017年10月，渥太华地区下了100毫米的雨，导致地下室部分完工。该住宅位于里多河以东1公里处，可能是一片沼泽地带。在任何情况下，地下水位都很高(在板下12-18英寸)。洪水的原因还没有确定，但我怀疑是地下水位的上升淹没了20世纪50年代的外部粘土抽水瓦排水系统，该系统连接着一个运行的陷阱，并被疏散到卫生管道中。一夜之间，地板上积了12厘米的水。地下室分为两部分，一部分完成了一半，另一部分未完成。我拆除了完工部分的所有地板，切割并拆除了距地面三英尺的绞盘和绝缘材料，并对整个螺柱进行了消毒。
我们决定更换卫生排水系统，安装一个回水阀。与此同时，我们在新下水道旁放置了抽水瓦。现有的板子被保留在原地，然后在通往排水沟的地方被凿掉。然后，我们考虑了地下室一半的地板选择，并决定采用混凝土地板，以抵抗未来的洪水。我们有一家公司在地下室的那一半的现有板上浇筑了一个2-3英寸的新板。紧靠地基墙的2x4螺柱墙被留在原地，但用蓝皮胶带保护。
We now have to finish the walls and seal or otherwise treat the concrete floor. I understand now that I should've removed the 2x4 stud wall before pouring the new slab. I also see that it would have been better to remove the entirety of the old slab and install a new properly insulated one. My question is can I proceed in a way that makes sense or do I need to start over? I was thinking of acid staining the floor and then applying a sealant, but I now see that this product is not LEED approved.
Thanks for your time reading and any advice you can offer.
Hi Wren
这是一个很难回答的问题，我知道看到一个项目并希望能回到过去是什么感觉。虽然如果你的平板下面有隔热层会更好，但我很难建议你现在这样做，所以这将取决于你的预算和舒适度。
As for the stud wall, if I’m reading that right, it sounds like you have the bottom plate of the stud wall embedded in the concrete floor and up against the wall as well. If so, it would be best to remove it if you still can since the concrete will continue to absorb moisture and in turn the wood will continue to absorb moisture as well and begin to rot. I get the idea of the Blueskin to protect the wood from wetting, but it may have the effect of preventing it from drying.
You’ve probably read on our site that the stud wall shouldn’t be right against the foundation wall; if it’s at all possible I would want to get that stud wall separated from the concrete. It isn’t a load bearing wall, its job is to hold insulation and drywall. So if you’re able to, maybe cut the studs at the bottom and pry it out, then separate the stud wall from the concrete by an inch or two (if you can spare the space inside) and spray foam behind it and even under it.
As for sealing the floor, I would recommend a silicate densifier. It would make for a very durable and completely non-toxic floor,you can read more about it here.
It can be tough to offer advice without a visual, so feel free to load some photos and we can trouble shoot this and come up with a solution.
Also bearing in mind that prevention is better than cure - check out our guide onpreventing basements from flooding by maintaining exterior drains, fitting sump pumps, high water alarms and battery backups to sump pumps.