Roller Door Measurements
Before you specify and order a Gliderol steel single skin roller garage door you need to understand the dimensions and ordering references used as they do differ from many other types of roller garage doors.
Below is a basic diagram showing the terminology used in the ordering and specifying process:
Ordering Width Dimensions Explained
The Ordering Width when specifying and ordering a Gliderol steel roller door is the Opening Width plus the roller door curtain overlap and is generally therefore the garage Structural Opening Width plus the door curtain overlap on each side which is 25mm each on a roller door up to 3400mm total width or 50mm each side on a door over 3400mm. The side room required for actually installing the roller door is different again as there are quite large supporting steel L brackets at high level which are fitted wider than the roller guides referred to in the ordering width and also fixing lugs on the steel side guides
Example: A 2300mm wide garage door structural opening requires a further 50mm adding for the 2 no. 25mm guides each side giving an Ordering Width size of 2350mm.
Ordering Height Dimensions Explained
The Guide Height is also the reference for the Ordering Height for a Gliderol continuous curtain steel roller door -
It is the height of the steel side guides that the roller door curtain slides up and down in and if you are ever in doubt about your height (i.e. unfinished floor, etc) you can always order these higher than required and cut the guides on site if necessary from the bottom and the curtain roll will simply take up the slack in adjustments.
Example: A floor to RSJ/lintel height of 2200mm would mean ideally you need 430mm of headroom above this and the ordering measurement would be 2200mm. If you do not have 430mm of headroom the roller door will still fit but you will lose drive through height when open .
In the worst scenario of having no headroom at all then you will require some kind of front mounted fascia cover to cloak the roll from view outside but your order height will be the total height less the curtain roll size required.
The curtain roll size also depends upon the height of the door ordered, see the table below:
Maybe one more drawing to help you understand?
