PVC Patio Door 'sticking' at top

sadie

Registered User
Messages
681
We got Patio Doors put in last year. The top of one door is sticking at the top when you try to open it. So it is falling away from the hingeside at the top if you see what I mean.
The people who put it in (the builders not suppliers) fixed it, but then it gradually came back again. It is worse when its warmer weather. Can I fix this myself using the alan keys in the hinges or is it something else? Like do I need to try and get on to the door supplier and complain?