I have vinyl siding on my new home. Starting about a week ago, one segment of siding detached on one end and is drooping. The other side is attached just fine.
I tried snapping it back into place, as it looks like each is just supposed to stay in place by snapping into each other. That lasts for about a few hours, and it starts to sag in the middle and eventually the same end detaches and droops again.
My father in law suggested using a galvanized nail and hammer in the siding, but seems like a brute force bandaid. Is he right? What should I do to fix this?