LPT: If you own a house and have a relatively new flat roof / skylights make sure the snow doesn’t sit on them for more than a day or two.

We own a house built in 2017 and this is the first time it snowed in our area this much (Central Europe, about 2-3 inches of snow). I decided to climb the roof and take down some snow myself as the skylights stopped letting any light through because there were so much snow on them that it was like having a blind overly turned on. It turned out there was a literal pool of water underneath that snow on the roof. It was like 6 cm thick and 5 meters long. The water layer was about 1 cm thick through the entire length of the pool. That was on a part of the roof that was slanted towards the gutter. I assume the warm air that escaped through the insufficiently insulated skylights melted the snow on the bottom of the layer, but the snow on top still blocked the water from sliding down into the gutter.<br><br>I’ve pulled the whole snow layer down from the entire part of the roof that had a pool of water with the skylights and now it’s clean and dry. The water didn’t have time to seep through the surface layer into the concrete but it would have eventually if I hadn’t taken the snow down. The snow layer was so heavy that I was sinking in it about 10 cm deep. I’m now afraid of walking through the ceiling but it held my weight so far.<br><br>Edit: I didn't expect this post to blow up that much. Thank you for all the awards and for educating me in the comments. Next time I'll hire professionals :) . Also, I now have proof that I'm an idiot when it comes to anything that requires common sense.