Measurement of vertical blinds for plastic windows. How to measure blinds for plastic windows correctly? Measurement of horizontal blinds

Blinds are an excellent solution for the interior, beautiful and effective. With the right choice of model, material and color, they can ennoble any room. When buying, it is imperative to take into account the compliance of the blinds with the size of the window. How to measure window parameters for blinds and not be mistaken?

How to correctly measure a plastic window for installation:

You can take measurements yourself or call specialists from the store where you are going to purchase blinds. The main thing in this process is accuracy and accuracy. After all, an error in measurements can result in unnecessary costs of money and time.

If you decide to take measurements for blinds on plastic windows yourself, this article is for you.

What are the important features of window measurements and ordering worth knowing?

How to correctly measure the window for blinds and not be mistaken? Observe the following rules:

  1. Use a steel tape measure only it will give a fairly accurate measurement result;
  2. Give up rounding off measurements; only exact numbers are needed, up to millimeters;
  3. When ordering blinds, specify the width first, and then the length;
  4. Check the measured parameter in several places because the window cannot be of an ideal shape, and the subsequent functionality of the blinds depends on the errors.
Each type of blinds requires a specific approach, a specific measurement technology

Measurements for horizontal blinds

Horizontal blinds were the first light filters to enter the functional home and office market. And to this day, they perfectly cope with all their tasks, easily bypassing competitors.

How to measure the opening for horizontal blinds on plastic windows? To begin with, it is worth deciding on the installation method, on which the dimensions of the canvas depend. There are three options for installation on the opening, in the opening, on the sash. In the first and second cases, the location of the control does not matter; it can be located both to the right and to the left.

How to correctly measure the window for installing horizontal blinds on the opening?

Fastening to the opening allows you to visually expand the boundaries of the window. This is an excellent design solution, also because in the event of incorrect measurements, the blinds can still be installed.

  1. Measure the width and height of the window opening in several places, take the largest indicator as a basis;
  2. Add 1 cm to the width;
  3. Add 5 cm to the height.

Measurements for installing horizontal blinds in the opening

Blinds installed in the opening are perfect for large windows. They practically do not take up space and will be one of the most practical interior solutions.

And how to correctly measure the window for installing blinds in the opening?

  1. Measure the width and height of the window opening in several places, choose the largest figure;
  2. Subtract 1 cm (or better a little more) from the width;
  3. Subtract 1 cm from the height indicator.

Measurements for installing horizontal blinds on a sash

Sash mounting is the most convenient and provides maximum efficiency of blinds as light filters. When you open the window, the blinds do not have to be folded, which greatly facilitates their use; also, with such a fastening, the window sill is completely free, and flowers and interior details can be placed on it.

So how do you measure under the blinds on the sash on plastic windows?

  1. Measure the width and height of the sash in several places, choose the largest value;
  2. Add 1cm to the width;
  3. Add 3 cm to the height;
  4. Determine the side of the control mechanism, it should be located on the opposite side from the handle.
Measurements of the sash must be carried out along the borders of the glazing bead

How to measure the window opening for vertical blinds?

Vertical blinds bring sophistication to the interior. If you have chosen the right material and color of the blinds, you can be sure that they will perfectly fit into the room.

Vertical blinds can be installed on the opening and in the window opening. The choice of installation option depends on your preference and which method best reflects the design idea.

The blinds will look great if their width is a multiple of 8 cm (one-sided opening) and 16 cm (two-sided opening).

Window measurements for vertical blinds attached to the opening

Fastening to the opening helps to hide the distortions of the window, cover the battery and pipes. However, if you have chosen this method of installing vertical blinds, you need to remember that the window sill and the battery protrude from the common plane of the wall, and the blinds must be positioned so that they open without touching these parts of the room.

So how to correctly measure the space for vertical blinds on the opening for plastic windows?

  1. Measure the width and height of the window;
  2. Add 20 cm to the width;
  3. Add the required number of centimeters to the length if you are installing blinds on the ceiling, this will be the height from the top of the window to the ceiling; if installation will be made on a wall, add 10 or more centimeters;
  4. Add to the resulting length the distance from the bottom edge of the window opening to the place where the louvers should end.

Measurement of the window for the installation of vertical blinds in the opening

By installing vertical blinds in the window opening, you can not make allowances for the window decor if there is furniture in front of the window. Blinds that fit into the window opening do not interfere with the environment. However, remember that this mounting option is only suitable for a fairly even window, because all errors in the lines of the window opening will be very clearly visible when you install the blinds.

How to measure the size of future vertical blinds installed in the opening on plastic windows?

  1. Measure the width and height of the opening in several places, select the maximum values;
  2. Subtract 1 cm from the width;
  3. Subtract 2-3 cm from the height.

Measurements for installing roller blinds

Roller blinds are compact and practical. They are rolled up and, when opened, do not take up space at all. In addition, due to the existence of different types of fabric, roller blinds can darken the room up to 100%.

Roller blinds are installed on the wall, in the opening and on the sash.

In any calculation for roller blinds, add 0.5 cm to the height to take into account the cornice

How to measure the window opening for installing roller blinds on the wall?

So how do you measure roller blinds that will overlap plastic windows?

  1. Measure the width and height of the window opening in several places, select the maximum value;
  2. Add at least 10 cm to the width;
  3. Add 20 cm to the height.

Measurements of the window for installing roller blinds in the opening

How to measure roller blinds for installation in openings on plastic windows? As in the case of vertical and horizontal blinds, this method should be used only if your window is flat enough, otherwise all its defects will become visible.

  1. Measure the width and height of the window opening in several places, calculate the maximum values;
  2. Subtract 1 cm from the width;
  3. The length can be left unchanged, since if the roller blinds turn out to be slightly longer than necessary, they can simply not be deployed to their full length.

Window measurements for installing cassette roller blinds

This method of attaching roller blinds will allow you to most effectively regulate the lighting in the room.

Many manufacturers of horizontal blinds offer different models of window decoration products.
How to get this splendor in your apartment?

  • you can entrust the professionals with all stages of the installation: measurement, installation;
  • you can independently measure and then order products according to individual data;
  • it is also not a bad option - to purchase finished products, selected according to the appropriate parameters - length, width, a suitable method of fastening. If you decide to install the blinds yourself, buy or order the production of blinds with their subsequent installation by professionals, then you need to correctly measure and calculate the data for installation, which will help you with this article.

Manufacturing firms or blinds installers require serious payment for their services for quality work. Therefore, many residents rely on their own strengths and skills when measuring and installing purchased ready-made blinds.

In order to correctly measure windows for any kind of blinds, you must first decide on the type of blinds (vertical or horizontal), and choose the option for their installation.

Choosing the option of attaching blinds to a window opening

  • over the window opening (the cornice is attached to the wall above the window);
  • inside the window opening;
  • installation inside - on the sash. Which of the three methods is better is up to you, focusing on the design of the window and the type of blinds you choose.
    Vertical blinds are mounted on the wall over the opening, less often - directly in the window opening.
    Rolls, or rolls, are attached in any way.
    On Russian plastic windows, it is advisable to put blinds on each sash, because thanks to this method, maximum maneuverability will remain in the window area, while the blinds fixed in the window opening will need to be opened and closed every time in order to slightly open the window for ventilation.

If you are the lucky owner of a wide European-type window with beautiful overhead slats in the sashes, the method of attaching blinds to the window opening, or over the opening, will suit you.
Blinds mounted in the opening exactly end-to-end can stand out beautifully on contrasting walls with an open edging of plastic or wood.

One can talk about the beauty of one way or another for a long time, but it is better to make a visual comparison. The illustration below shows how the window looks when installed outside, inside an opening, or on a sash.


If the clear perimeter of the window casing harmoniously complements the interior, then it is better to put blinds inside the sash
How the window size visually changes with different installation methods The location of the blinds mounting block above the plastic window also visually lengthens the window

So, the list of required window measurements will depend on the chosen installation method.

How to measure a window for installing blinds on a sash

This method is characterized by the layering of the curtain fabric on the plastic surfaces of the frame on both sides, it is such a margin that will ensure a tight fit of the fabric and exclude gaps, gaps that would look ugly from the street in the dark, and even partially violate privacy.


    1. The width of the roller blinds, blinds is determined by the distance between the slopes. 100 mm or more are added to this indicator (if there are pipes or any elements on the side of the window that you want to close, then the canvas increases to the required area);
    2. The length should be measured from the upper slope to the window sill or below (how much the canvas will be below the window sill is determined individually).
      Further, depending on the type of blinds, additional centimeters are added to the height under the "package" (the height of the assembled blinds).
      The "package" must be taken into account when installing blinds over the opening, and necessarily - in the opening. It is necessary to make sure that the assembled blinds will not interfere with the opening of the window.
      For roller blinds, add 5 cm under the package, for horizontal aluminum - depending on the height of the blinds - see the table:

    When choosing the length of the roller blinds, the size of the window sill should be taken into account. With a wide window sill, the lamellas go down to its surface, with a narrow one - to an arbitrary level
    Tip: So that the canvas does not lie on the windowsill, but only reaches it beautifully, measure the distance from the upper slope to the window sill, and subtract 20 mm - this length will look most impressive.

    Please note that there are limitations for large windows for aluminum blinds:
    in height - no more than 3.4 m, in width - no more than 2.85 m, total maximum area - no more than 6 m.

    If the blinds have to hide the window sill, you need to take into account the amount of removal of the cornice together with the blinds. If the length is not enough, special lining rings supplied with the blinds or materials at hand are used.

    Do not forget to determine the height at which the plumb line of the control cord will be - 15 cm above the lower edge of the blinds.

    Measurement of the window when installed in the opening

    In this case, it is advisable to reduce the size of the opening by 1 cm, for a more organic installation:
    from width minus 1 cm, from height minus 1 cm.

    We measure the window for vertical blinds


    Initially, you should determine the installation method. In all cases, it is recommended to mount it on the wall above the window, at a distance of at least 10 cm from the upper edge of the opening (to avoid wall chipping).
    Installation in the opening is also practiced, but in the event that the curtain rod of the blind will not interfere with the opening of the window sashes.

    When installing vertical blinds in the window opening, you need to measure all sides of the opening - left and right (height), top and bottom (width), from the obtained values ​​we take the smaller ones, if such a discrepancy in the wall panels takes place.
    Next, subtract 1 cm from the height and width.

    For installation over the opening, you need to add 8-10 cm in width on both sides, for high-quality closing of the gaps.

    Finished blinds: sizes

    Parameters of finished horizontal blinds:
    - height 150 cm
    - width 30-70 cm
    - the width of the lamellas is 16-25 mm.

    Sizes of plastic horizontal blinds: height -160 cm, width - from 40 cm and more, in 10 cm increments.There are many manufacturers of roll curtains on the domestic market, the largest players are Inspire, Lotari, Escar, Uyut, New Leader, and others. ...

    All of them offer blinds of all sizes, both through stores and on the Internet, their catalogs can always be found easily, and you can choose a product of the right size for yourself.

It is easy to measure the window for installing vertical blinds!

Installation in the window opening

If you want vertical blinds to be installed inside the window opening, you need to measure the full width and height of the opening (wall to wall) as shown in the diagram below. The measurement must be carried out at least three times in each direction and the smallest values ​​must be selected.

  • for measurement accuracy,;
  • measure in 3 locations, both "Width" and "Height", and then choose the smallest of the values. Be careful and always double-check yourself!
  • in order for vertical blinds to be installed in the window opening, it is necessary Reduce "Height" and "Width" by 2 cm.
  • such as window handles. Check if the blinds will be an obstacle when opening a window for ventilation or when fully open.

Wall or ceiling mounting above a window

If you want vertical blinds to be installed outside the window opening, you need to measure the width and height of the opening, taking into account the allowances, as shown in the diagram below. Measurement must be carried out at least three times in each direction and select the largest values.

  • for accurate measurements, use a steel metal tape measure;
  • measure in 3 locations, both "Width" and "Height", and then select the largest of the values. Be careful and always double-check yourself!
  • to order vertical blinds, it is necessary that the measuring points at the top be at least 10 cm above the window opening. The measuring points at the edges should be no closer than 8 cm to the edge of the opening. The measuring points at the bottom can be 2 cm higher than a window sill, battery or other obstacle.
  • pay attention to obstacles such as window handles, radiators, screens, heating pipes. Check if the blinds will be an obstacle when opening the window for ventilation.

Please note that when ordering vertical blinds, as "Width" and "Height", you indicate the overall dimensions of the product!

Ordering slats (fabric) for replacement

If you want to replace only the fabric in the blinds, it is necessary to measure the length of one lamella and the number of lamellas on the eaves.


  • for accurate measurements, use a steel metal tape measure;
  • make sure all slats are the same length. Be careful and always double-check yourself!
  • To order a fabric kit, indicate the size shown in the diagram on the left. You don't need to add or subtract anything;
  • pay attention to the condition of the runners and mechanisms of the cornice... Try to carefully remove some of the slats and make sure you don't break the hooks that hold them. Replacing the hooks without dismantling the cornice and completely overhauling it is not possible!

During the operation of the product, it is strictly not allowed to move apart and slide the louvers slats if they are in the closed position. The slats must be shifted fully or slightly open. Otherwise, the swivel mechanisms may break!

Still have questions?

  • Our experts are ready to assist in choosing vertical blinds for any type of windows.
  • So that we can provide qualified assistance, send us window picture by email [email protected] site
  • If possible, call our customer service center by phone +7 495 790-04-26. We work: Mon-Fri 9: 00-19: 00, Sat 10: 00-17: 00.

Blinds will well prevent the penetration of sunlight into the house if their size strictly matches the size of the window. Measurements must be made carefully in accordance with a number of rules.

Nuances of measurements

The most accurate measurement can only be obtained with a steel tape.
Rounding of numbers to whole centimeters is not allowed. Every millimeter counts.
Before you buy blinds and when placing an order in the invoice, first write the dimensions of the horizontal side, then the vertical.

Horizontal and vertical measurements are taken in several places to take into account possible window distortions. If this is not done, the blinds can subsequently stick when moving.

Each of the types of blinds, roll, vertical and horizontal, has its own characteristics that must be taken into account when measuring.

Horizontal blinds

They are attached in one of two ways: on the opening, in the opening and on the sash. In the first case, the blinds are attached to the ceiling or wall and block the window by a few centimeters. It is not scary if their width and length exceed the dimensions of the opening. By the way: by installing the blinds in this way, you can achieve a visual increase in the window. After horizontal measurement, add 1-2 cm or more, after vertical measurement, add 5 cm or more. They take measurements in 3-4 places and take the maximum indicator.
Opening installation involves placing the bracket on the top of the frame. Measure the height and width of the opening. subtract 2 cm from the height, 1.5 cm from the width.

By attaching the blinds directly to the sash, the window can be opened and closed, and the useful area of ​​the window sill can be used to accommodate indoor plants or decor items. The sash is measured from the inner borders of the opposite glazing beads. This is the name of the inner edge of the frame, which is in direct contact with the glass. Measurements are also made several horizontally and several vertically and take the maximum indicators as a basis. 1 cm is added to the width, 3 cm to the length.

Important! The control mechanism is located on the opposite side from the one where the handle is located.

Vertical blinds

Vertical blinds are mounted on the opening or in the opening. The first option allows you to make them a decorative element of the interior, cover the heating radiator, mask the distortions of the window. Sometimes the width of the window sill exceeds the width of the window. If the projections are more than 6 cm on both sides, the blinds should be equal to the width of the window sill plus 10 cm. The distance to the bracket on which they will be attached is added to the vertical measurements of the window. The bracket can be installed on a ceiling or wall.

The option of placing vertical blinds in the opening is chosen by the owners of small rooms, where the space under the window is occupied by furniture. However, in this case, it is important that the window does not have distortions, or they are minimal. 2 cm are subtracted from vertical measurements, and 1 cm from horizontal measurements.

Roller blinds

Many are sure that roller blinds or roman blinds can only be attached to the frame. In fact, it is also possible to mount them on the wall - with an overlap.

When installed with an overlap, vertical and horizontal measurements of the window opening are performed. Add 20 cm to vertical, 10 cm to horizontal.

Installation of Roman blinds in the opening does not require any pros and cons when measuring. The height and width of the window are the dimensions of the curtain. However, you should make sure that the window is completely level. Otherwise, it makes sense to consider the option of placing curtains with an overlap.
The conclusion is as follows: measurements for installing blinds are easy to perform, given the installation method. But in the absence of experience, it is better to entrust this work to specialists.


The living room in the house is one of the important rooms. It hosts guests, as well as spend time relaxing, watching TV and much more. There are options when the living room is connected to a work area or kitchen.