How to choose the width of a roller blind for a window, do it yourself trimming methods

Width calculation

The dimensions of the curtains depend on the size of the window, the shape of the shutters. The length of the roll fabric is not so important when choosing, because it is standard and adjustable. The standard height of the curtain 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 made according to the width indicated on the package, taking into account the shaft.

For standard windows, you can choose ready-made curtains with instructions and a specified attachment point, but for atypical windows or windows of irregular shape, the width of the canvas must be selected independently or made an individual order.

To correctly measure a plastic or wooden window for the installation of curtains, you need:

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

   

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 roller blind system is suitable. If the size is larger, then the Uni system will do.

   

The rolled cloth, which is attached directly to the sash, shades the room well and remains unnoticed when rolled up.

MINI system

To calculate the width of the "Mini" roll cloth for installation on a sash, you need to:

• measure the width and height of the glass in mm. Add 40 mm to the width and 120 mm to the height.
• determine the location of the roll-up lifting mechanism, the best option is from the side.
• choose a mounting method, it can be adhesive tape, screws, bracket.

The standard width of the roll cloth for fastening to the sash is 9 centimeters wider than the glass. Curtains "Mini" are fixed on the sash without drilling, but 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 attached to any level, on a sash or over a window opening. Mounted with self-tapping screws.

To calculate the width of 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 wall mounting above the window opening is 10 centimeters greater than the width of the window opening so that the canvas is opaque.

Measurement of roller blinds, UNI 1 system

Roller blind measurement, UNI 2 system

Minimum and maximum size table

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

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

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

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 required shaft length, cut off the excess and install a special plug on it.
   
2. Spread out the curtain, mark the desired width with a strip.
3. Cut off the fabric with a knife.
   
4. To install the material on the shaft, remove the tape 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 fold is formed. Attach the shaft to the fold with the self-adhesive facing up.
5. Roll the shaft to the top of the blade, turn the roller 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 make the initially correct measurement of the width based on the place of attachment to the window, if you initially choose a model-system of curtains and take measurements from the window opening or sash. But if there is a need to cut the width of the blinds, then you can do it yourself.