Hi My double glazed single back door opens from the inside and i need to adjust it up abought 5mm so i can get a matt under it , It has three hinges but do not know how to do this task please could some one help me thankyou.
Look for a allan key adjustment top or bottom on the knuckle part of the hinge sometimes under a plastic cap, turn with allen key it will lift the door, do all three equal amount.