Roller Blinds – Construction

motorised roller blindsMethods of operation include chain, crank and remote control. Chain operation is standard and the most cost effective option for roller blinds, whereas crank is often chosen for environments such as schools where chains are not robust enough and can result in health and safety issues. Fabric can be rolled in both directions onto the tube. The standard method rolls off the back of the tube closest to the window but fabric can be rolled off the front also. This latter method, called reverse roll, can be used to create a clearance for protruding window handles but also works well in Victorian conservatories as the gap between blinds are reduced. Should a fabric backing need to be made less visible on the tube, reverse roll will achieve this. Most blinds can have control end and plug end swapped thus converting from standard roll to reverse without having to re roll fabric.

Roller Blinds – The most Popular Design

Probably the most commonly fitted remote control blind they are available in 240v, 24v and battery operation. Large remote control roller blinds will tend to be 240v whilst 24v can be used for medium sized blinds and battery for smaller. 240v also will be used for home automated systems, generally being hard wired. 24 v can also be used but usually require a radio conversion interface so that systems using somfy receivers, for example, can interface with systems such as lutron and crestron.

Roller Blind Specifics

remote control roller blindsWeight and area of fabric will be the deciding factor as a rule. The wider the blind, the wider the diameter of the tube and the gauge of tube wall. Using too small a tube will result in flexing that will distort fabric. Should your blind have a long drop then any cassette option will have to account for this, sometimes even ruling out a cassette altogether. Sometimes joins are required if fabric roll is not big enough. Some roller blind fabrics are bi directional and can be rotated by 90 degrees to achieve a greater width. However the drop will be limited by the roll width unless horizontal joins are acceptable. Rollers can have issues where long drops are concerned as the fabric can track off either side of the tube. Re-adjusting brackets can help or a small piece of fabric can be slid under opposite end of tube where fabric joins to increase diameter thus balancing the fabric. This is sometimes called tabbing and can be a little hit or miss but is useful if sill is uneven.

Roller Blinds – Fabric Gr0ups?

electrically powered roller blindsThe main roller blind fabric groups are transparent, translucent, dim out and blackout. As the names suggest they allow varying amounts of light to penetrate. Total blackout blinds will require an additional frame work for the side and sill areas. A channel extrusion is the usual method here. In addition to this studs can sometimes be added to the sides of the fabric to stop the blind from being sucked out of these guide rails when a window is opened. They are best avoided if possible as fabric can appear distorted in some cases.

If you would like a quote for a proJect please feel free to give us a call, we can supply both manual and electric roller blinds throughout the UK.