We have uPVC patio doors to the rear of the property. One of the door has slightly dropped towards the middle at the top so that the gap between the edges of the doors at the top is less than the gap bottom. This has created a gap at bottom where draft air can flow through. Is there an adjustment I can make myself or will I have to get a professional installer in to have a look at it?

Mark Brookes, November 2008

you can do it yourself at the bottom of the doors they have adjusting wheels if they are inline patios you can raise or drop each side depending on type fitted if you cant access from sides you will have to lift panels out to adjust remove antilift out blocks first

malc, November 2008