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Measuring for a Gliderol Continuous Curtain Steel Roller Garage Door
PLEASE ENSURE YOU FULLY READ THIS 'MEASURING GUIDE' BEFORE PLACING AN ORDER!
These are made-to-measure doors. Once manufactured, cancellations or returns are not accepted.
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 differ from all other types of roller garage doors sold in the UK.
Important Fitting Note: This single skin roller door can only be fitted BEHIND the structural opening or suitable framework. It cannot be fitted in-between the framework/brickwork. It requires additional side room space on either side for the steel fixing lugs and the protruding curtain barrel.
Ordering Width Dimensions Explained
The Ordering Width for a single skin door refers to the full width of the curtain required plus the width of the guides (excluding fixing lugs). To get this measurement, take the structural opening width in 3 places (across the top, middle, and bottom), use the widest dimension, and add the guide width:
- For doors up to 3450mm wide: Add 50mm (2x 25mm guides)
- For doors over 3450mm wide: Add 100mm (2x 50mm guides)
Example: If your widest structural opening is 2200mm, add 50mm for the guides to get an Ordering Width of 2250mm.
Pro Tip: If you have more space available behind the reveal, it is always best to order a door up to 100mm wider than required. This completely hides the guides when viewed from the outside, increasing weather protection, security, and the overall aesthetics of the door.
Side Room Clearance for Installation:
The physical side room required for installation is different from the guide width. You need extra space to accommodate the steel fixing lugs and supporting brackets at high level:
- 75mm clearance required each side for single-size domestic doors.
- 150mm clearance required each side for double-size doors.
- Add an extra 25mm on the motor side if automation is selected.
Ordering Height Dimensions Explained
The Ordering Height (or Guide Height) refers to the height of the steel side guides NOT including the curtain roll above this height. Ideally, this is measured from the floor to the underside of the RSJ/lintel, allowing the curtain roll to sit out of the way above the guides.
Headroom Clearance Required:
By virtue of their construction, roller doors require space above the lintel to conceal the rolled-up section of the door. The headroom required from the lowest point of the ceiling to the top of the opening depends on the door height:
- Opening Height up to 2135mm: 420mm headroom required
- Opening Height up to 2440mm: 450mm headroom required
- Opening Height up to 2740mm: 480mm headroom required
- Opening Height up to 3055mm: 520mm headroom required
What if headroom is restricted?
If the recommended headroom is not available, the door can still be installed; however, some loss of opening height will occur as the roll will be visible (which can be disguised with a fascia). In this instance, measure the height from the floor to the ceiling in a few places, take the shortest measurement, and subtract the required headroom (420-520mm depending on height) to get your Ordering Height.
Note: If headroom is minimal, a MINI ROLL model may be a better option.
Drive-Through Height Tip:
Every roller door will have a small section of the curtain hanging down slightly when fully open (usually about 50mm). If you require the full structural height to drive through and have sufficient headroom, add another 50mm or more to your ordering height to push the door curtain higher internally. If in doubt, you can always order the door higher than required and cut the guides down on-site; the curtain roll will simply take up the slack.
Maybe just one more drawing to help you understand?
If you have any doubts or queries we are here to help....
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