Cupboard doors separating

Goomba_BC wrote:
Hi all.
I went to check on my travel trailer today. It is stored at an outdoor facility. I live in southern BC Canada which has had some cooler weather, a few days of snow and minus temps. But overall it's been a mild winter. I have the trailer covered with an Adco cover and used Dry z air to help with moisture.

I left the cupboard doors open as I've read it helps with airflow. Anyways I tried to close on of the cupboard doors and it wouldn't shut. I checked it over and noticed the corner had separated. it happened on quite a few of them. I took photos and they are below.
Any idea what caused this? How to keep this from happening and how to fix them???

This is my second trailer and I've had a camper as well before. I've never had this happen.

Hubby the carpenter and cabinet builder suggests.....

Taking them to a cabinet shop to look at. Do not cut anything unless you have the knowledge and tools. You may not get the profile right.

If you want to try yourself and glue them...don't take them apart.
Use wood glue and bar clamps. Leave the clamps on for a few hours and then do not hang the doors for a day.