Revisions log for question
Why has the siding on the house warped?

In the pictures provided, you can see that the siding has gone up. I noticed that this happened after the frost (reached -30 Celsius for a week). The house is residential, heated by a boiler (there are radiators). The siding is not swollen, namely raised (it is clearly visible in the photo), and not everywhere, but only on a few windows.

The house is part brick and part block. Inside the house, there are no new changes to the walls. What is it: siding or something with the wall?

• facade
• siding