When a new floor is laid, additional height is usually to be expected.

For example, when a carpet is removed and replaced by a parquet floor, the underbody structure increases from 4mm to 15mm. In order for the doors to continue to be used, it is necessary to shorten the door.

In addition, the door frames should be trimmed to a suitable height before laying the wooden floor.

Instead of defacing the transition with unsightly silicone joints, the parquet can then be simply pushed under the frame (only partially recommended for click parquet).

Tool list

  • Diving circular saw
  • Fine multimaster or door trimmer
  • Fine sanding paper
  • Stechbeitel & Hammer

Adapt the door frames to the parquet

Video: How to shorten the door frame (door lining)

To find the right height for the door frame, you only need a piece of the top covering (e.g. a single rod oak parquet).

This piece will not be used later, as it usually gets some scratches.

The parquet rod is now placed directly on the screed on the door frame.

It is important that the parquet rod is directly attached to the frame. If there is a distance between them, the saw blade likes to deviate downwards and the frame is cut off at an angle.

If you don’t have a multimaster or anything like that, you can also go to work with a Japan saw and a little hand feeling.

Once the frame has been sawn through, remove the loose parts with a chisel (“stemmeisen”) and a hammer.

One should be careful not to damage the veneer, for example.

Once the excess is removed, the parquet rod is pushed under the frame for a sample. If everything fits, it goes to the next frame.

Machines for shortening the door frame (door lining)

Shorten the door: Bring the door leaf to parquet height

In order to use the door leaf as usual and so that it does not swipe on the parquet floor, it is facilitated by the additional flooring height.

In most cases, it is only a few millimetres of the door that need to be shortened.

The most common problems with shortening the door are:

  • Finding the right height
  • Prevent the guide rail from slipping
  • Finding a safe stand for the door leaf
  • Prevent the “diswelling” on the saw cut

So that the above problems are no longer any more, proceed as follows:

  1. When the parquet floor is installed, the door is briefly hung. The door hinge now measures how many millimeters the door can withstand. This is the height that must be shortened at least on the door leaf. If the parquet floor or underbody is uneven, several adjustments should be expected.
  2. To avoid slipping the door leaf, we set up two sufficiently wide folding blocks. These must be the same height and should be wrapped with a blanket or similar (to avoid scratches).
  3. We do not use a jigsawto shorten the door. A diving circular saw with guide rail should always be used here. The guide rail of a good immersion circular saw (e.g. Festo, Bosch, etc.) can be fastened with a screw clamp. This means that we place the guide rail on the door leaf and then fix it with a screw clamp on the left and right.

Shortening the door – video guide

In order to prevent the door leaf from being cut out when sawing with the diving circular saw, there are the following options:

  1. Glue the place with a Tesa adhesive tape beforehand (dangerous with painted doors, as the paint can be removed with)
  2. “Scratching” with a sharp cutter knife, along the rail
  3. Place the diving circular saw on the rail and start. Then dip the saw blade very easily (2-3mm) and first drive along the rail with the saw. This has a similar effect to scribbled with the cutter, but in any case hits exactly the cutting line. Now the cut can be performed in the second gear and full depth.

Once steps 1 to 4 have been completed, it is necessary to test whether the door leaf is still swiping on the parquet floor. If so, steps 1 to 4 must be performed again.

If not, put the door leaf on the painter’s bucks one last time. In order to rule out a later dispersing or tearing of the veneer, they should now break the two cutting edges with a fine sanding paper.

That’s it – the door is shortened and now it can be hooked up again.