How to choose the width of the roller blinds on the window, do-it-yourself cropping methods

Width calculation

The dimensions of the curtains depend on the size of the window, the shape of the wings. The length of the web is not so important when choosing, because it is standard and adjustable. The standard web height is 180 cm, the width of the curtains is from a minimum of 25 cm to a maximum of 300 cm. Measurement is always done according to the width that is indicated on the package, taking into account the shaft.

For standard windows, you can choose ready-made curtains with instructions and the indicated mounting location, but for atypical windows or irregularly shaped windows, you must select the latitude of the canvas yourself or make an individual order.

For the correct measurement of 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 for the roller blind.

   

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

   

The rolled web, which is mounted directly on the sash, shades the room well and remains unnoticed when twisted.

MINI system

To calculate the width of the “Mini” roll web for installation on the sash:

• measure the width and height of the glass in mm. Add 40 mm to the result of the width, and 120 mm to the height.
• determine the location of the mechanism for raising the web, the best option is on the side.
• choose the method of fastening, it can be adhesive tape, screws, bracket.

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

UNI system

The Uni system fits into any interior. The roll is hidden in a 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 the roller blinds for installation over the opening, you need:

• measure the external dimensions of the length and width, according to these data, taking into account the dimensions of the 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 7 centimeters (UNI 2).

The standard width for mounting on a wall above a window opening is 10 centimeters wider than the window opening to make the canvas opaque.

Measurement of a roller blind, UNI 1 system

Measurement of a roller blind, UNI 2 system

Table of minimum and maximum sizes

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

The way to cut the width of the curtain (photo instruction)

The task of trimming the width of the curtain can be done independently and without special tools. To take all the measurements you need to use a long ruler or construction tape measure.

You can shorten the roll width as follows:

1. Cut off the shaft. To do this, subtract the thickness of the bracket from the width of the roll. Measure the desired shaft length, cut off the excess and install a special plug on it.
   
2. Spread the curtain, mark the desired width using the rail.
3. Cut the 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 blind is wound on the shaft from the side of the window opening. Check where the curtain lifting mechanism will be located. The curtain must be fixed on the shaft strictly in the horizontal direction to avoid distortions. Bend 5 centimeters of the top of the roll so that a crease is obtained. Attach the shaft to the crease with self-adhesive up.
5. Roll the shaft to the top of the web, wrap the blind, leaving the free edge at ¼, fix the lower rail.
   
6. Installation on the bracket has the following sequence: first, the edge with the mechanism is inserted, then the other.
   

   

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