How to measure Blackout blinds
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How to measure Blackout blinds

Published by: Blinds UK (5)
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Need help measuring your windows Blackout blinds? Select the product of your choice for instructions on ’how to measure’ your windows properly before you place your order.

You are advised to read these instructions carefully before ordering and note the allowances made on specific made to measure products.

Things to Remember

  • Use a steel tape measure for accuracy.
  • Measure in centimeters and round each measurement to the nearest 0.1cm.
  • Measure all windows, even those that appear to be the same width and height.
  • When ordering always specify the width measurement first and then the height.
  • Remember to specify ‘Recess’ or ‘Exact’ size when ordering. For more information on Recess or Exact specified measurements please read ‘Determine the type of mount Recess or Exact’.
  • Look out for any obstructions such as window handles, tiles, dado rails etc and take their position into account if necessary. This way you will be sure of a perfect fit for your blind.
  • Consider the stacking height for the product that you choose.
  • If you have any questions about measuring your window or Blackout blinds please call us on 0845 533 1023 or email us at enquiries@blinds.

Determine the type of mount Recess or Exact

‘Recess’ Measurements:

This is the measurement you need to specify if you want your blind to fit inside the window recess. There is no need for you to make any adjustments as we will make the deductions for the blind to fit the recess perfectly. For recess deductions see Guide to Recess allowances below.

  • Measure the width of the window wall to wall (left to right) in 3 separate positions. Note down the smallest measurement inside the recess.
  • Measure the drop of the window (head to sill) in 3 separate positions. Again, note down the smallest measurement.

‘Exact’ Measurements: 

This is the measurement you need to take if you want your blind to hang outside the window recess. We will make your blind exactly to these measurements.

  • Measure the exact width area where you would like blind to cover. Note down the measurement.
  • Measure the exact area you would like the blind to cover from top to bottom. Note down the measurement.

Fabric width guide & allowances for Blackout Roller blinds:

Please remember the WIDTH of a Roller Blind (Blind size) is the BRACKET to BRACKET measurement – not the fabric width (cloth size). See table below for guide on calculating the actual roller blind cloth size

Blinds UK - About the Author:

Blinds UK is the designer's choice for the best selection and value in custom made window coverings. We offer the most comprehensive collection of custom window treatments at everyday low prices, allowing you unlimited design choices and affordable prices.

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