Use a metal tape measure to ensure accurate measurements.
Fabric on a roller blind is 35mm narrower than the full bracket to bracket size meaning that on a bay window where two blinds are fitted next to each other the gap will be approximately 40mm. This may prevent all the glass being covered.
Roller blind brackets can be rotated to be either top fixed where you screw the blind into the top of the recess or face fixed where the brackets are screwed facewards into the window frame.
Deciding to face fix or top fix is determined by where you have room to fit the brackets.
The size of roller blind bracket are different depending on the size of the blind.
Use the information below to determine the bracket allowance.
If you have decided to top fix
Bracket allowance for blinds up to 2000mm wide x 2500mm drop: X = 53mm
Bracket allowance for blinds up to 2500mm wide x 2700mm drop: X = 71mm
If you have decided to face fix
Bracket allowance for blinds up to 2000mm wide x 2500mm drop: X = 65mm
Bracket allowance for blinds up to 2500mm wide x 2700mm drop: X = 71mm
Note down the X value for the next step.
Take an A4 sheet of paper and cut in half.
Place the two pieces of paper next to each other and mark a line at measurement X.
1) Place the pieces of paper on the window sill touching the frame and slide together until the two lines meet.
2) Then using a pencil make a mark on the window sill at the point where the corner of the fabric meets the frame.
3) Repeat on the opther angles around the bay.
The overall width of the roller blind including brackets is approximately 35mm wider than the fabric.
Measure from one mark to the next as shown on the illustration. This will give you the widths the blinds will need to be.
Order all blinds as BRACKET TO BRACKET SIZE
Follow the same principle for where a door meets a window, however be sure to note down the longer measurement for the drop.
If your window has any handles that protrude out affecting the blinds then please order them as reverse roll.
The fabric will then fall over the front of the tube, missing the handles. See images.
For the drop measure from where the bracket is to be fitted to the window sill.
Order all blinds as BRACKET TO BRACKET SIZE.
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