Measuring Guidelines

Measuring Guidelines for Roller Blinds, Roman Blinds, Vertical Blinds, Wooden Venetian Blinds, Metal Venetian Blinds and Sliding Panel Blinds

Inside Recess

If you would like to fit your blind inside your window recess then just measure inside of wall to inside of wall in centimetres.  Do this in several places in case the wall is not straight and enter the smallest measurement in the 'Width' measurements box in the blind builder. Then just measure the top of the reveal to window sill, as above, and enter this measurement into the 'Height' measurement box.

We make a small deduction depending on your blind type from the width and height of an inside recess blind to allow for easy fitting.  


Tick inside recess in the Measurements and Position section in Step 1.


Outside Recess



You can always fit your blind outside your window recess.  Simply measure the area you would like your blind to cover.  Normally we recommend that this is 5cm overlap on each side of your recess – but this is just a guide and you may wish to change this.  Please measure carefully and double check.  We will then make your blind to your exact sizes.

Please note that if you are measuring for a roller blind that you need to give us the fabric size that you need.  Don't forget, however, that the assembled fitted width will be approximately 30mm wider to allow for the brackets.

Tick outside recess in the Measurements and Positions section.


Note: Always use a steel tape measure for accuracy and please provide metric measurements (centimetres).  
If you are unsure and require any advice regarding measuring for your blind please don't hesitate to contact us directly.

Measuring Guidelines for Perfect Fit Roller Blinds, Perfect Fit Venetian Blinds and Perfect Fit Pleated Blinds


Perfect Fit Pleated, Venetian and Roller blinds are designed for most uPVC windows, doors and conservatory sides.  Perfect fit Blinds are easy to measure and install and the Perfect Fit frame fits to brackets located between the window seal and glazing. 


Before you begin, ensure there is a 6mm clearance all around the outside of the window beading to allow enough room for the Perfect Fit framework.  

6mm Clearance  Also check that the seals of the window frame do not protrude over the glass more than 6mm and that they are
  compressible. You can then take a bead to bead measurement.
  If the seals are not compressible (solid) and do not protrude over the glass by more than 6mm you can then take a seal to
  seal measurement.

Measuring Instructions

Step 1 - Measure glass size

Visible Glass

  Measure the width (left to right) and the drop (top to bottom) of your window size accurately. We recommend that you measure in
  both corners and the middle of your window and use the smallest size taken.  You are measuring the visible glass size here.

Step 2 - Measure window depth

Measure the depth of the window using a ruler/straight edge and a tape measure.

Glass Depth   This gives you the measurement from the face of the window frame to the glass (this is normally approximately 20mm,
   24mm or 30mm) and will determine the size of the window fixing brackets you will use.  

   If you are not sure then please get in touch by calling us on 0844 880 2084 or emailing

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