3 Ways To Adjust A Upvc Door Wikihow from www.wikihow.com
Doors are an essential part of every home, but sometimes your doors just won't close. This is generally going to be a very small measurement, a ¼ or a ½ inch swing the door to see if it clears the jamb and closes properly. If it only misses by 1/8 inch or less, the problem can likely be solved by tapping the plate in the right direction with a hammer.
If you will close the door up until it would normally latch, and then follow a body style line from the door.
I had a pesky door in my bathroom that kept closing on its own. To fix a bent hinge, open the door and shim underneath to support its weight. Determine whether the hinges are loose or have worn pins and repair them before continuing. It's possible to fix these tricky doors with a few hand tools and some.