Garage door construction

Garage door construction

At A1 Garage Doors, all our doors are constructed using interlocking 77mm x 18mm thick (including radius), twin walled aluminium slats and filled with CFC-free insulating foam.

This combines strength whilst helping increase energy efficiency with a typical U value of 5.2 w/m 2K. The doors can easily span an opening up to 5400mm wide and come complete with a heavy duty weather seal to the bottom section.

Door features



Locking is actively engaged by the anti-lift geometry locking straps when the door is closed.


Guide rails

The guide rails are only available in a white or brown polyester powder coated finish and incorporate double neoprene and brush pile seals, which help prevent against draughts, whilst increasing the insulation value of the door. (Please note that the colour of the guide rails may vary slightly from the door curtain).


Side Plates

Once fully retracted, the curtain is housed between two side plates, which locate into the guide rails via a cast aluminium leg. This helps distribute the weight of the door onto the guides, whilst simplifying the installation. The curtain is then assisted on its descent by two nylon rollers mounted onto the base of the side plates, which helps reduce wear and makes the door run smoother.



All A1 doors are supplied with an infra-red photo electric safety beam as standard, which if the zone of the doors path detects an obstruction whilst closing, the door will automatically stop and return to the open position.

This system benefits over other manufacturers standard bottom rail safety devices, as it detects the obstruction before the door actually touches it, thus preventing possible damage.


Remote control operation

Each A1 door comes with remote control operation and 2 executive style compact handsets with key fobs. Rolling code technology ensures that security is paramount with a unique code generated each time the handset is activated. The remote control operation allows you to open and close the door from the convenience of your car perfect for those wet and windy days! The control box has the option of a timed auto close facility and outputs for the connection of a separate 240 volt timed courtesy light and also for the connection for an internal push button or key switch.


Due to the design of the A1 door, it can be adapted to accommodate most types of garages, even those with arches.


The door curtain is manufactured from corrosion-resistant aluminium and coated with an anti-abrasive polyester finish, which requires only an occasional wipe with a cloth and mild soapy water.


All A1 doors come with a comprehensive return to base 12 months parts warranty.

Side room

The A1 door can be installed either within the opening (reveal fix) if the side room is limited or behind the opening (face fix), allowing any old timber frames to be removed and maximising the drive through width.

Manual override

In the event of a power failure, a manual winding handle ensures that the door can be opened from inside the garage. An external manual winding system is also available as an optional extra if there is no other available access into the garage.


The tight roll of the door requires only 300mm of headroom for doors up to 3000mm in height. This allows additional roof space in your garage and maximises the drive through height for taller vehicles. Please note that approximately 70mm of the bottom of the door will be visible below the opening, when the door is in the open position.

Housing cover box (optional extra)

A front fascia section and back cover can be supplied as an optional extra, in either a white or brown finish. This helps increase the weather protection and insulation, whilst making the door even more aesthetically pleasing.


At the time of manufacture, all A1 motors are designed to lift at least double the weight of the door that they are being fitted to. They also have 2 limit switches for both the open and close direction, so if one fails, the secondary one is there for back up, thus ensuring a long and trouble free life.