Rising butt hinges unlike ordinary butt hinges, rising butts raise the door as it is opened, and lift it clear of any carpet. You can remove the existing hinges of an ordinary door, and fit rising butts in their place. A door fitted with rising butts also tends to be self closing. The leaves of a rising butt hinges are not fixed together as are those of an ordinary butt. Instead, one leaf can be removed from the hinge pin, which is fixed to the other leaf, the leaf with the pin is fitted to the frame and the other to the door. Provided you fix the pin leaf clear of the frame, the door can merely be lifted clear, should it ever be necessary to remove it. Rising butts are available in right or left hand sets, so note the side on which your door is hinged before ordering. They are fitted in much the same way as ordinary ones, but there are two points to note. First, the two parts must be positioned on both frame and door with extreme accuracy, otherwise only one will be seated properly, and too much of a strain would then be imposed on it. Second, the top of the door must be beveled off towards the frame, so that it can open properly. Fitting a letter plate. A new front door will need a letter plate. Aim to position this at a height that will allow the postman to push letters through without having to stoop. On a paneled door, set the plate in the middle rail; never the bottom one.
On a glazed front door that has no middle rail, fit a vertical flap in the lock stile. Provision for a flap to be fitted is usually made in an external flush door. In that case the position is decided for you. Letter plates are usually fixed by means of bolts that pass through the door, and are held in place by nuts on the inside. Place the door flat on a bench, and position the plate accurately and squarely. Mark in pencil on the door the outline of the opening. Drill a large hole at each corner of the opening, and cut out the shape with a pad saw or powered jigsaw. Clean up the edges of the cut with glass paper. Now place the plate back in position, and mark the position of the fixing bolts. Drill clearance holes for these bolts. Place the plate on the front of the door. Push in the bolts, and on the other side lit and tighten the nuts on the bolts. An internal flap can be added to eliminate draughts in rising butt hinges. Normally this is just screwed into place.