Time frame: Fixing a door will take you about 2 hours to complete.
Difficulty: 6 out of 10
Essential Tools you will need to fit internal doors:
Drill and drill bits
Latch and handle
You may need a doorstop too.
Method of fitting an internal door
1. Purchase a new door which is the same depth as the old one, or you may find yourself having to remove and replace the door stop. If the new door is slightly bigger, you can always plane it down a bit. Remove your old door, leaving your old hinges on the frame if they’re still in working condition. If not, remove them and replace them with new hinges in the same place as the old ones.
2. With the door standing upright against the existing frame, make sure that there’s a 3mm gap between the two. You can use your existing hinges to measure this space on the hinges’ side of the door, by just leaning the door against them.
Fitting the latch on your internal door
2.Draw a vertical line in the middle of the door face as in the picture above. Now measure the latch and mark this on the door. Also, measure the distance between the end of the latch and the hole in the middle of it (picture above). Mark this on the door too. Get your flat drill bit and measure the length from the end of the latch to the hole that’s in it. Mark that distance on your drill bit because you don’t want to exceed that when you make the hole.
6.Carefully chisel your way around the line you marked for the latch. Remember to chisel the right depth (according to the latch) into the wood. When this is done, replace the latch and screw in securely. The latch should sit smoothly on the surface of the door face. There should be no difference in depth between the two.