What's the best way to insulate interior basement walls that are sweating?
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What is the best way to insulate interior basement walls that are sweating?
I am trying to determine the best way to go about insulating my prestudded basement. I have new construction with 8" thick poured basement concrete walls. My basement is a walk out, half is completely under ground with an external vapor barrier and the walk out half is expose concrete. My interior walls are all painted with Drylok.
Also I have a wood stove in my basement which basically has given me about 30% humidity. My issue is where that concrete is exposed and I apply insulation to the interior, my walls are sweating. So I know I have air getting in behind that insulation hitting the cold concrete walls, creating the sweating issue. I thought I had everything sealed up well but then I just created ice behind the insulation.
So now, I am looking at possibly adding foam board with the hope of sealing up those problem areas better and then applying a layer of batt insulation over top. One of my issues is, with the wall already prestudded is how to apply the foam board. I think I can get the foam board behind the studs in certain areas, but then in other areas I do not have enough space behind the stud to install foam board as I have between 1/8" - 1" of space behind the studs.
如果我在螺柱后面我能做到的地方安装泡沫板然后在其他地方的螺柱之间安装泡沫板我在螺柱后面做什么我不能在后面安装泡沫板，我用喷雾泡沫填充缝隙吗?我很感兴趣，有人有什么建议吗?Thanks
Insulating basement walls so they won’t develop mold means understanding where the moisture is and building it in a way that framed walls and insulation can stay dry.Firstly, I think given that you say it is new construction, the concrete is still wet. Especially if you have an exterior moisture barrier and a vapor barrier paint on the inside.
“出汗”可能部分是水分通过干衣机，也可能是墙壁是冷的，温暖的潮湿空气正在凝结。这似乎不太可能，因为你描述的湿度水平。不管怎样，混凝土地基墙保持湿润都是可以的，而且它们总是会潮湿的，除非你在地基下安装了防水膜，而这是非常不可能的。所以，接受混凝土是湿的，并建造保护墙壁免受水分的影响。Which means, above all..do not seal wood and insulation against the concrete with a sheet of plastic as there is only one possible outcome – your walls will rot. This page explains it well –
Preventing mold in basements when renovating and finishing
Given that you have an interior waterproofing layer, what will work from there is – putting rigid foam against the concrete, they your framed wall and insulation, then drywall with NO vapor barrier behind it. That way any residual moisture in the wall can evaporate through the walls and be handled byERV or HRV ventilation systemsor a dehumidifier. Keeping wood sill plates off the concrete floor is also a wise idea if it is not too late, we like to stick them up on small blocks of foam so they aren’t in contact with concrete, this also protects stud walls in the case of minor flooring.