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That was not caused by rain but refrozen snowmelt from the roof.

I understand, but if you get a lot more rain with your gutter drains frozen shut it can cause serious flooding, specially if you already have a leaky foundation/basement.

Well, that's true. But it hasn't rained here for maybe a couple of months. We have a good amount of snow, however. There is no basement in this house. The socle of the house is waterproofed from the outside from its lower edge underground to the upper edge.

As far as I can tell, this is the only gutter drain frozen shut at the moment. The roof is almost completely free of snow on the south side. There shouldn't be much more snowmelt coming from the roof.

Ah, thats good. It sounds like your house is better made to weather the uh, weather than many here in the states. I hardly know anyone who doesn't have flooding issues.

A correction, the waterproofing is a rubber plate extending from the lower edge of the socle to about ground level, not the upper edge. It would be quite ugly that way.

There's also probably a difference in weather patters between the south of Finland and Illinois. Rainfall is quite evenly distributed here. Heavy downpours here are probably not as heavy as in Midwest USA. Of course, you can have serious problems because of the local contours of the terrain here as well. And there is often flooding in river valleys in certain areas with very flat terrain.

There were only a handful of icicles hanging from the gutter drains but there were a couple hanging from the eaves about 10 cm towards the wall from the edge. This means that the gutter drain has flooded near that point. There is a cold storage room above a warm storage room on the side of the house where the overflooding has happened. The attic is quite easily accessible from the cold storage room. I will just have to take one panel off of the wall to have a direct view of the problem. I don't believe there has been much damage but I should install cables for the next winter.

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