How to Measure Roman Blinds

For a window treatment that comes with the promise of fitting to a ‘T’, measuring with precision is a must. ‘Measure twice, cut once’ is a rule to follow by heart. And while our seasoned tailors and seamstresses will take care of cutting and stitching like the pros that they are, we need you to nail the measurements. After all, teamwork makes the dream work!

But before you put your measuring tapes to work, you’d ideally have already decided on the mounting position of your roman blinds because its measurement technique will vary accordi...

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Inside mount roman shades

Outside mount roman shades

Before You Start

PRO TIP 1: For the most accurate measurements for any window dressing, use a steel tape measure. Fabric or plastic tapes can stretch over time and will not provide the accurate reading you need to obtain perfect specifications.

PRO TIP 2: If you’re measuring for more than one window, measure each window individually – never assume that your windows are the same size, even if they may look alike.

PRO TIP 3: Measure at three different points of the window as the length and width can vary, even though not perceptibly.

PRO TIP 4: Our hardware needs a minimum of 5 cm of flat mounting surface. If your window recess/ frame does not have the required depth, please consider outside-mounted roman blinds instead.

PRO TIP 5: Most fabric bolts come in standard widths of 137cm. Therefore, most roman blinds more than 125 cm wide will have vertical joining hems to achieve the necessary width.

How to Measure Length

Measure the height of the inside portion of the window, not including the frame or trim attached to the wall. Hold the tape from the highest point to the lowest point and note the figures. Do this at three positions: the two extreme ends as well as the middle point of the window.  Whichever of the three is the largest figure should be specified as the length of the shade in your order with The White Window. 

If you have multiple windows in a room of very similar vertical dimension, we recommend specifying the longest height among them. This will ensure that all shades are visually consistent and the fold lines/pleats are sewn at equal gaps for all of them. 

We do not make any adjustments, additions, or deductions to the length you specify for your roman blinds. The finished length of your blinds will be exactly as you order on our site.

OF NOTE:

  • If a blind is ordered with a tassel trim, we include the drop of the tassel in the specified length. So, if you specify 100 cm as the length of your blind and the trim you chose is 5cm long (which is noted in the product description for your reference), the fabric portion of the shade will be 95 cm long and the trim will occupy 5 cm.
  • When fully rolled down, European roman blinds look just like the regular flat/plain fold blinds; the swag is formed only as the blind is lifted. While this is the default construction of all relaxed shades, some clients may want to show off the scalloped detail at all positions - even when the shade is fully lowered. To achieve this, the length specified in the order needs to be longer. Therefore, we ask clients to consult us at info@thewhitewindowblinds.co.uk and our stylists are happy to recommend a size that will allow you to achieve the desired look.
How to Measure Width

Measure the horizontal width of the window recess/ inside of the window frame at three positions — start from the top left to the top right, then the centre, and complete with the bottom. While placing your order for your roman blinds, please mention the narrowest figure for the width specification in your order.

Please note that to ensure a smooth fit inside the recess, we follow the industry-standard practice of deducting 10mm from the width specified in the order. So, please don’t make any such precautionary reductions from your end, or else the blind will leave too much gap on the sides and light will leak through those edges.

A Note from our Stylists: Most fabric bolts come in standard widths of 137 cm. This means that while extra-long roman blinds can be sewn without any seams, extra-wide blinds are stitched by joining two widths of the bolt together to achieve the necessary width. This is standard industry practice and most clients are aware of it. However, a first-time client may be caught off-guard by any seams running through their blinds. Rest assured, extreme care is taken to make the seams as discreet as possible, and any patterns are matched carefully at joints by our tailors.

How to Mount

Our roman blinds come pre-assembled with all necessary hardware, ready to be mounted in a jiffy. To assist you in the installation process, we have put together a comprehensive Roman Blinds Installation Guide with easy-to-follow steps and handy reference images.

Before You Start

PRO TIP 1: For the most accurate measurements for any window dressing, use a steel tape measure. Fabric or plastic tapes can stretch over time and will not provide the accurate reading you need to obtain perfect specifications.

PRO TIP 2: If you’re measuring for more than one window, measure each window individually – never assume that your windows are the same size, even if they may look alike.

PRO TIP 3: Measure at three different points of the window as the length and width can vary, even though not perceptibly.

PRO TIP 4: Our hardware needs a minimum of 5 cm of flat mounting surface. 

PRO TIP 5: Most fabric bolts come in standard widths of 137cm. Therefore, most roman blinds more than 125 cm wide will have vertical joining hems to achieve the necessary width.

How to Measure Length

Start by measuring the length of your window - including the trim/frame. To this figure, clients often add a few centimetres (typically 5-8 cm) on either end to extend the blind and minimise light leaks from the top and bottom edges.  For example, if your window length - trim to trim - is 90 cm, we recommend a blind of about 100 cm drop to prevent light leaks. That said, this extension is entirely discretionary - and may not be needed for spaces where room darkening is not a priority. 

In settings where the window features a projecting sill, the roman blind would typically stop at the level of the sill instead of extending below. This adjustment is necessary to ensure the smooth operation of the blind and prevent any hindrance caused by the sill's projection.

If you have multiple windows in a room of very similar vertical dimension, we recommend specifying the longest height among them. This will ensure that all shades are visually consistent and the fold lines/pleats are sewn at equal gaps for all of them. 

We do not make any adjustments, additions, or deductions to the length you specify for outside-mount roman blinds. The finished length of your blinds will be exactly as you order on our site.  

OF NOTE:

  • If a blind is ordered with a tassel trim, we include the drop of the tassel in the specified length. So, if you specify 100 cm as the length of your blind and the trim you chose is 5cm long (which is noted in the product description for your reference), the fabric portion of the shade will be 95 cm long and the trim will occupy 5 cm.
  • When fully rolled down, European roman blinds look just like the regular flat/plain fold blinds; the swag is formed only as the blind is lifted. While this is the default construction of all relaxed shades, some clients may want to show off the scalloped detail at all positions - even when the shade is fully lowered. To achieve this, the length specified in the order needs to be longer. Therefore, we ask clients to consult us at info@thewhitewindowblinds.co.uk and our stylists are happy to recommend a size that will allow you to achieve the desired look.
How to Measure Width

Much like the length, start by measuring the width of your window - including the trim/frame. To this figure, clients often add a few centimetres (typically 5-8 cm) on either side to extend the blind and minimise light leaks from the edges.  For example, if your window width - trim to trim - is 90 cm, we recommend a blind of about 100 cm to curb light leaks. As noted before, this extension is entirely discretionary - and may not be needed for spaces where room darkening is not a priority. 

We do not make any adjustments, additions, or deductions to the width you specify for outside-mount roman blinds. The finished width of your blinds will be exactly as you order on our site.  

A Note from our Stylists: Most fabric bolts come in standard widths of 137 cm. This means that while extra-long roman blinds can be sewn without any seams, extra-wide blinds are stitched by joining two widths of the bolt together to achieve the necessary width. This is standard industry practice and most clients are aware of it. However, a first-time client may be caught off-guard by any seams running through their blinds. Rest assured, extreme care is taken to make the seams as discreet as possible, and any patterns are matched carefully at joints by our tailors.

How to Mount

Our roman blinds come pre-assembled with all necessary hardware, ready to be mounted in a jiffy. To assist you in the installation process, we have put together a comprehensive Roman Blinds Installation Guide with easy-to-follow steps and handy reference images.