How to measure up your windows to fit roller shutters

Roller Shutter Measuring Guide

  1. Mounting method – On wall or in reveal/recess 
  2. Operation – Manual or Automated (battery operated or electric)
  3. Roller Shutter Type – Domestic, Cyclone, Bush Fire or Commercial

Once you have made your choices, you’ll need to grab a measure tape and some paper and a pen to record your measurements.

How to Measure
This guide covers how to measure for the following roller shutter types

  • Manual Roller Shutters – Wall Mounted – (Domestic/ Commercial/Cyclone or Bush Fire)
  • Manual Roller Shutters – In Reveal/In Recess (Domestic/ Commercial/Cyclone or Bush Fire)
  • Automated Roller Shutters – Wall Mounted (Domestic/ Commercial/Cyclone or Bush Fire)
  • Automated Roller Shutters – In Reveal/ In Recess (Domestic/ Commercial/Cyclone or Bush Fire)
    Windows Without A Sill

Using a wall mounting method is the simplest and easiest method for DIY installation.

However, a manual control winder is the hardest of all installations, battery operated roller shutters are the easiest of all DIY installations and do not require the use of a qualified electrician.

 

Measuring Wall Mounted Manual Roller Shutters

DIY Roller Shutter Height Measurement

To measure the height of the roller shutter you simply need to take two measurements – one on the left side of the window and one on the right side of the window.

Measure the height from the top of the window opening down to the bottom of the window opening or sill.

If your window frames or architraves protrude out past the wall, then measure the height from the top of the architrave to the bottom of the frame/architrave

If your window frames or any part of the window protrudes out past the wall you will need to use packers when installing.

If your window is located directly underneath the eaves, measure from the bottom of the eaves to the sill to get your height measurement see below diagrams.

Always measure to the nearest mm. If your two measurements differ do not worry always use the larger of the two measurements.

Measurement adjustments.

From the largest of the two measurements deduct 50mm and write that down this is the curtain height.

The bottom of the header box on a manual winder installation needs to sit 50mm below the top of the opening of the window which is why we deduct 50mm from the measurements.

Now we need to select an appropriate header box for your chosen shutter type. Simply look up your curtain height (largest height measurement less 50mm) below and select the header box.

Measuring Wall Mounted Manual Width

To measure the width of the window simply measure the width of window opening at both the top of the window. If your window frames or architraves protrude out past the wall, then measure the
width from left hand edge of the architrave to the right-hand edge of the architrave see diagram below.

Don’t worry of the two measurements differ simply use the larger of the two measurements. If your
window frames or architraves protrude out passed the wall, then you will need to use packers when installing.

Next you need to add on the guide rails suitable for your roller shutter type. Simply take the larger
of the two width measurements, look up your shutter type and add on the amount shown.

  • DOMESTIC Shutters guide width 53mm add on 106mm

  • BUSH FIRE Shutters guide width 53mm add on 106mm

  • CYCLONE Shutters guide width 70mm add on 140mm

  • COMMERCIAL Shutters guide width 77mm add on 154mm

Measuring In Reveal/In Recess – Manual Roller Shutters

Mounting a manually operated roller shutter in the reveal is by far the hardest DIY installation of all. There is no margin for error especially if your windows are out of square, so we would always recommend an on-wall installation for manual roller shutters. 

This installation method is not recommended for windows that open outwards such as casement, awning or hopper windows as when the guide rails are mounted inside the window recess they could interfere with the operation of the window. 

This installation is only suitable for homes with a double wall and cavity construction and a minimum recess depth of 40mm is required. DIY Roller Shutter in recess/reveal height measurement To measure the height of the roller shutter you simply need to take two height measurements – one at the left side of the window and one at the right side of the window. 

Measure the height from the top of the window recess down to the bottom of the window recess. If your window is located directly underneath the eaves, measure from the bottom of the eaves to the sill to get your height measurement see diagram A. 

If your two measurements differ always use the larger of both measurements.

When mounting your roller shutter in the reveal your height measurement automatically allows for the correct header box size.

You will need to cut the guide rails to the correct length and angle of window sill at the time of installation.

DIY Roller Shutter in recess/reveal width measurement

To measure the width of the window simply measure the width of window opening at both the top and bottom of the window see below.

If your measurements vary always use the smaller of the two measurements.

If the smallest measurement was taken at the top of the window then deduct 1mm from your measurement to ensure that that the header box, which will be situated at the top of the window can slide into the recess.

When measuring in reveal/recess the width measurement automatically allows for guide rails.

Measuring Wall Mounted Automated Roller Shutters (battery powered or hardwired)

Using a wall mounting method is the simplest and easiest method for DIY installation.

Shutters can be mounted anywhere on the wall with the header box under the eaves, level with the window, slightly over the window or anywhere in between.

We would however suggest where there are multiple windows next to each other, it is preferable to keep the positioning of the header box consistent between the windows for maximum visual appeal.

Automated DIY Roller Shutter Height Measurement

To measure the height of the roller shutter you simply need to take two measurements – one on the left side of the window and one on the right side of the window.

Measure the height from the top of the window opening down to the bottom of the window opening or sill. If your window frames or architraves protrude out past the wall, then measure the height from the top of the frame/architrave to the bottom of the frame/architrave see Diagram A. 

Where window frames/architraves or handles protrude out beyond the wall you will need to use packers (LINK) before mounting your roller shutters. If your window is located directly underneath the eaves, measure from the bottom of the eaves to the sill to get your height measurement see Diagram B. 

Always measure to the nearest mm. If your two measurements differ do not worry always use the larger of the two measurements.

Diagram A ^
Diagram B ^

The height you have just measured is the area that will be covered by the slats when the roller shutter is deployed.

This is called the curtain height. However, the overall height of your roller shutter needs to include the header box, so you need to add the height of an appropriate header box onto your measurements.

Header boxes come in a number of different sizes, as the longer the window the more slats that need to be stored within the header box, therefore the larger the header box size required.

To select the correct header box size for your chosen shutter type, simply look up your curtain height (largest height measurement) below and select the header box that matches

Automated DIY Roller Shutter Width Measurement

To measure the width of the window simply measure the width of window opening at both the top of the window.

If your window frames or architraves protrude out past the wall, then measure the width from left hand edge of the architrave to the right-hand edge of the architrave see diagram below.

Don’t worry of the two measurements differ simply use the larger of the two measurements.

If your window frames or architraves protrude out passed the wall, then you will need to use packers when installing.

To calculate the overall width of your roller shutters you need to add on an allowance for the guides.

To select the appropriate guide width simply take the larger of the two measurements, look up your shutter type and add on the amount given.

  • DOMESTIC Shutters guide width 53mm add on 106mm
  • BUSH FIRE Shutters guide width 53mm add on 106mm
  • CYCLONE Shutters guide width 70mm add on 140mm
  • COMMERCIAL Shutters guide width 77mm add on 154mm

Measuring In Reveal/In Recess Automated Roller Shutters (battery powered or hardwired)

In reveal mounting is the hardest type of DIY installation as there is no room for error especially if
your windows are out of square, so we would always recommend an on-wall installation if you are
unsure.

This installation is only suitable for homes with a double wall and cavity construction and a
minimum recess depth of 40mm is required.

DIY Roller Shutter in recess height measurement

To measure the height of the roller shutter you simply need to take two measurements – one at the left side of the window and one at the right side of the window.

Measure the height from the top of the window opening down to the bottom of the window opening or sill see diagram below.

If your window is located directly underneath the eaves, measure from the bottom of the eaves to the sill to get your height measurement see diagrams.

If your two measurements differ always use the larger of both measurements.

When mounting your roller shutter in the reveal your height measurement automatically allows for the correct header box size.

You will need to cut the guide rails to the correct length and angle of window sill at the time of installation.

DIY Roller Shutter in Recess Width Measurement

To measure the width of the window simply measure the width of window opening at both the top and bottom of the window.