Bi-folding door blinds
When measuring for multiple roller blinds within a door opening, we would normally advise taking tight measurements with no gap allowance as the blinds can be fitted side by side with no gaps between them. However if you would prefer to allow a degree of tolerance to ensure the blinds fit, then allow 5mm between systems.
With cassette systems, we deduct 10mm from the width measurement ordered when inside recess fit is selected as the fit type – this is to reduce the profile width to ensure it will fit within a typical window recess. When fitting multiple blinds within an opening, this reduction per blind offers enough fitting tolerance to ensure the profiles fit with some room for manoeuvre.
We would advise to take the measurements the following way (example of a three blind system):
- Measure from the left side wall recess to the centre point between panes 1 & 2 (Width #1)
- Measure from the centre point between panes 1 & 2 to the centre point between panes 2 & 3 (Width #2)
- Measure from the centre point between panes 2 & 3 to the right side wall recess (Width #3)
- Widths #1 + #2 + #3 = Total recess width
Also factor in skirting boards if fitted at floor level – it is not always necessary to reduce the blind width to account for the skirt, but should be considered.
With the standard system, there is a fabric gap of 18mm at both sides – we would recommend that you reduce the blind width by 10mm to allow the recess side bracket to be fitted 10mm inset relative to the recess wall. This will result in the fabric edge clearing the recess wall by 28mm (10mm reduction + 18mm fabric gap). If the skirt projects 22mm, then there will be a 6mm clearance based on this scenario.
With the cassette system, there is a fabric gap of 16mm at the non-motor side and 23mm at the motor side – if the motor side is positioned at the recess wall end where the skirt is located and the blind has a 10mm reduction due to inside recess fit, then the fabric edge will be 33mm away from the recess wall (10mm reduction + 23mm fabric gap). If the skirt projects 22mm, then there will be a 11mm clearance based on this scenario.
For more information, please visit our bi-folding doors page and fill out our form and member of the Poweredblinds customer support team will reply by email.