Measuring roller blinds on plastic windows: correct window measurements

Roller blinds are the most compact of all existing ones. They allow you to decorate a window opening with a minimum of funds, while reliably closing the room from prying eyes and sunlight. Some companies, when manufacturing blinds, offer customers a discount if they measure the size of the window themselves.

Green roller blinds on the living room windows — Before buying roller blinds, you need to measure the dimensions of your windows.

Content

Rules for measuring roller blinds
What errors occur when measuring?
Features of curtains with guides
Help from a professional
Conclusion
Video on how to measure a window for open type roller blinds
Photo gallery: Roller blinds in the interior

Rules for measuring roller blinds

The window is measured in a closed state with a regular tape measure with an accuracy of up to a millimeter. The height of the curtain for a fixed sash must be correlated with the height of the opening transom. The lower edges of the fabric guides must be at the same level.

To make blinds, first determine where to install the fastening:

on the opening from the outside;
Measuring roller blinds for installation on the opening
inside the opening;
When measuring, the unevenness of the window opening is taken into account
for each transom separately.
It is necessary to match the height of the curtains on the fixed and opening sashes.

The measurement is carried out by two parameters: width, height. Having thought about how to measure roller blinds on plastic windows, set aside half an hour to an hour, prepare a tape measure, a notebook and a pen to record the results. Think about what kind of structure you want to install.

Important! Zebra blinds (also called day-night) require more space in depth (0.3-0.5 cm).

Design of plastic windows with day-night blinds — Day-night blinds consist of two strips of fabric; when closed, they look like a solid sheet.

The width of the roller blinds corresponds to the width of the glass, taking into account the side glazing bead (this is an element that securely fixes the glass in the frame, it can have an ironed or rectangular shape), plus 0.1 cm on each side.

Measuring the width of an open roller blind — For open type roller blinds, the width is measured between the outer edges of the glazing beads

When determining the size, it is necessary to take into account whether the roller shutter mount (rod, rotation mechanism, end caps and fasteners) will rest against the hinges or slopes.

Window sash opening angle with different types of roller blinds — Cassette blinds come in two sizes: UNI1 and UNI2, the first of which has smaller dimensions and is designed for installation on an opening window sash.

The height is measured from the top edge of the sash to the bottom of the sash, and if the glazing bead has a rounded shape, it should overlap the border of the frame on the glass side by 2-5 mm.

Types of glazing beads for PVC windows — Types of glazing beads used on plastic windows

If the frame opens, then the length from below must be reduced by 5-7 mm. For a blind transom, the height is measured from the upper to the lower glazing bead plus 0.5 cm.

Measuring the height of an open roller blind — The height is measured between the top edge of the top glazing bead and the bottom edge of the bottom

What errors occur when measuring?

Instructions on how to measure curtains are needed to avoid typical mistakes. Many people think that it is enough to measure the frame across and along, but windows are not the same across their entire area, so you need to take three measurements at different distances. Specify the smallest resulting value in the order. If the width/length is too large, the curtain may not fit into the opening.

Important! It is necessary to take into account the dimensions of the roller blind itself, which holds the curtain.

Roller blinds come in open and closed types. Open-type designs are cheaper, but they get dirty quickly. Closed-type mechanisms are more expensive, but much more convenient.

Types of roller blinds for plastic windows — Roller blinds come in two types: open (on the left in the photo) and closed (on the right)

There is mechanical or automatic control. The overall width of the roller blind is 0.3-0.5 cm larger than the size of the curtain itself due to the mounting fasteners/plugs at the edges. If you do not take into account the difference, the canvas may extend beyond the frame - it will have to be trimmed during installation.

Electric roller blind for PVC window — When choosing curtains with an electric drive, it is better to give preference to compact models, the dimensions of which are slightly larger than manual analogues.

The depth of the mechanism is 3.5-4 cm (the design and its dimensions should be clarified with the manufacturer). Due to the difference in the methods of fastening, preliminary measurements are recommended to be entrusted to professionals who know the intricacies of various devices for mounting and controlling such curtains.

Measuring the height of a roller blind mechanism — The depth of the mechanism determines whether the window sash can open normally.

Sometimes roller blinds are installed so that they cover only the glass inside the frame. In this case, the structure is attached exclusively to frames with a rectangular glazing bead.

Roller blind of the UNI 2 system on a plastic window — Curtains with guides are good because they completely block sunlight.

When this element has a rounded shape, the curtains are made a little larger, placed higher in the window opening. Large blinds are placed outside, the roller blind is attached to the wall or ceiling.

Pay attention to the location of the handles for opening the frame! The open roll should not block access to them.

Pink roller blinds on a plastic window — It is more practical to position the control system so that the cord does not collide with the handle.

If the curtain touches something during use, there is a high probability of tearing the structure out of place. The lower edge of the guides, touching the window sill, gets dirty and wrinkled.

Features of curtains with guides

To ensure that the blinds lie flat and there are no gaps at the edges, guides are used - roller blinds look neat, last longer, and do not warp. When figuring out how to measure a window for roller blinds with guides, you need to consider the following features:

the depth of the glazing bead should be sufficient to ensure that the fabric does not touch the glass, which is approximately 10 mm;
The depth of the glazing bead determines which curtain system is more suitable
the width of the window opening is measured between the joints of the edge of the frame with the glass unit - this is the size of the panel;
The width of the canvas is measured between the ribs of the side glazing beads
the width of the decorative box is equal to the size from one edge of the glazing bead to the other;
take into account the size of the glazing bead - if the width is less than 10 mm, there is not enough space to attach the guides with special tape (9 mm);
Measurements are made with an accuracy of 1 mm! Use only metal tape measures or rulers
the height of the finished curtain will be equal to the height from the junction of the glazing bead with the frame at the bottom and top.
The height of a curtain with flat guides is measured between the edge of the top glazing bead and the edge of the bottom

Important! When deciding how exactly to position the curtain with guides, keep in mind that the height of the roller blind box cannot be less than 7 cm with a depth of 36 mm.

Closed roller blinds on a plastic window — The guides securely fix the curtain fabric, preventing it from sagging and sticking to the window.

With closed-type roller blinds, the width of the fabric is measured from the joint of the glazing bead with the frame, not with the glass. The width of the roller blind mechanism itself is 20 mm larger than this value. The measured size includes the width of the U-shaped guides. Closed-type mechanisms use exactly these designs, which adds 3-5 mm on each side.

Important! The edge of the control mechanism must be at some distance from the slope so that it can be slightly opened.

Roller blinds on PVC window with a pivoting sash — If the window slope is very close to the transom, the curtain mechanism may interfere with the full opening of the sash.

The height of the roller blind with guides is determined by the joints of the frame and the glazing bead from bottom to top. For windows that do not open, the distance from the slope to the joint of the frame with the glass should be at least 45 mm - this provides space for fastening the roller blind.

Help from a professional

Experience shows that standard windows are not rectangular when measured, their size varies slightly at different fixation points. For larger sizes, roller blinds are needed specifically for panoramic glazing, the measurement of which is best left to a specialist. For large-scale structures, it is necessary to take into account several fixation points, and take measurements several times.

Measuring a window opening with a metal tape measure yourself — Unfortunately, window openings are often uneven, as are the windows themselves, even plastic ones.

For non-standard window openings, only a specialist can determine the algorithm for measuring the dimensions. For options with a rounded top, it will be difficult to manufacture blinds due to the specifics of the roller shutter fastening. Measurements include determining the parameters of the circle, choosing the fastening method - this is impossible to do without knowing exactly what tools and technologies the company has.

Roller blinds on a window with an arch — Decorating an arched window with roller blinds is quite difficult

Important! Such designs are created only on an individual basis, it is impossible to find them in the catalog.

Decorating an arched plastic window with pleated blinds — Perhaps the best solution would be to abandon roller blinds in favor of other models that allow you to decorate non-standard window openings; for example, pleated blinds look good in an arch.

It is difficult to understand how to install blinds in a bay window - it is better to invite a specialist to take measurements. He will offer several options for placing roller blinds so that there are no gaps at the edges, and all the windows look like a single composition.

Roller blinds on the windows in the kitchen bay window — It is important to choose the option that is best suited for each bay window.

Depending on the availability of free space for the fastening mechanism, the following designs are used:

open or closed type;
mechanical or automatic;
A professional selects the shape of the guides.

Conclusion

Measuring a blind frame is not a complicated process, but it must be approached with extreme care. A mistake will result in the work having to be redone, which will entail additional costs. When the position of the handle on the frame is not taken into account or the canvas is slightly longer than necessary, the owner, feeling the inconvenience of the mistakes made, will want to get rid of them: you will have to spend money again.