How to choose the width of the roller blinds on the window, how to trim yourself

Proper measurement of the width of the roller blinds is a guarantee of the acquisition of a functional element of the interior decor. The rolled cloth does not take a lot of place, does not demand special leaving, and also well passes light and air.

Width calculation

The dimensions of the curtains depend on the size of the window, the shape of the shutters. The length of the rolled web is not so important when choosing, because it is standard and adjustable. The standard height of the canvas is 180 cm, the width of the curtains is from a minimum of 25 cm to a maximum of 300 cm. The measurement is always done in width, which is indicated on the package including the shaft.

For standard windows, you can pick up ready-made curtains with instructions and the indicated attachment point, but for non-typical windows or windows of irregular shape, the width of the canvas must be selected independently or you can make an individual order.

To correctly measure a plastic or wooden window for installing curtains you need:

  1. Measure the width and length of the glass to determine the minimum required size of the roller blinds.

  2. Calculate the depth of the glass bead (parts between the glass and the window door). With a bead depth of 1.5 cm or less, the Mini curtain system will be suitable. If the size is larger, the Uni system will do.

The rolled canvas, which is attached directly to the sash, shade the room well and remain unnoticed in a twisted form.

MINI system

To calculate the width of the roll sheet "Mini" for mounting on the sash is necessary:

  • measure the width and height of the glass in mm. Add 40 mm to the result obtained, and 120 mm to the height.
  • determine the location of the mechanism for raising the web of roll, the best option - the side.
  • choose a mounting method, it can be sticky tape, screws, bracket.

The standard width of the roll web for mounting on the leaf is 9 centimeters wider than the width of the glass. Curtains "Mini" is fixed on the sash without drilling, and with the help of plastic fasteners, velcro, staples.

UNI system

The system "Uni" fits into any interior. The roll is hidden in the box, it can be mounted on any level, on the sash or on top of the window opening. Mounted with screws.

To calculate the width of roller blinds for mounting over the opening you need:

  • to measure the external dimensions of length and width, according to this data, taking into account the dimensions of the guide roller blinds, select the model.
  • The height is equal to the sum of the external size of the window and the height of the box is 7 centimeters (UNI 2).

The standard width for mounting on the wall above the window opening is 10 centimeters wider than the width of the window opening so that the canvas is opaque.

Measurement of a rolled curtain, UNI 1 system

Measurement of a rolled curtain, UNI 2 system


Table of minimum and maximum sizes

Type of curtainsWidthHeight
Standard system (wall / ceiling mounting)
Minimum size 2530
Maximum size (shaft 25, 38 mm)150, 300270, 300
MINI system
Minimum size2520
Maximum size150180
UNI system
Minimum size2520
Maximum size150180

How to change the width of the roller blinds (video instruction)

A way to trim the width of the curtains (photo instruction)

With the task of trimming the width of the curtains can cope on their own and without special tools. To remove all measurements you need to use the length of a ruler or building tape.

Shorten the width of the roll as follows:

  1. Cut the shaft. To do this, you need to subtract the thickness of the bracket from the width of the roll. Measure out the desired length of the shaft, cut off the excess and install a special plug on it.
  2. Spread the curtain, mark the desired width using the slats.
  3. Cut fabric cloth with a knife.
  4. To install the material on the shaft, remove the film from the self-adhesive strip of the shaft. Check that the roller is wound onto the shaft from the side of the window opening. Check where the curtain lifting mechanism will be. The curtain must be fixed on the shaft strictly in the horizontal direction to avoid distortions. Bend 5 inches to the top of the roll so as to form a fold. Attach the shaft in the fold self-adhesive up.
  5. Roll the shaft to the top of the blade, turn the spool around, leaving the free edge on ¼, fix the bottom rail.
  6. The installation on the bracket has the following sequence: first an edge is inserted with the mechanism, then another.

It is not difficult to initially make the correct width measurement based on the attachment point to the window, if you initially select a model curtain system and take measurements from the window opening or casement. But if there is a need to trim the width of the blinds, then this can be done independently.

Watch the video: How to Correctly Shorten Window Blinds HD (April 2024).

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