This is the traditional solution to many main entrance steel door requirements and can be supplied in a range of duties from light use (similar to domestic garage doors) through medium and up to heavy duty suitable for factory use. Steel roller doors can be un-insulated or moderately, but not highly, insulated.


The light duty steel door is formed from, effectively, a continuous single 'skin' which flexes to allow the door to be rolled. Heavy duty doors benefit from stronger 'laths' which typically slide together and each lath forms, in effect, a hinge allowing the door to roll. Should door leaf repair be required then on the lighter duty door the whole panel will need to be replaced whereas on the heavy duty door individual laths can be changed.


The decision as to which option is more suitable for a typical door of a 3m x 3m size is one of frequency of use and levels of abuse/security that is required.

Due to their nature we recommend that above 4m wide or 4m high doors should always be of the heavy duty nature due to their weight. The heavy duty door is available up to 8m wide and 10m high if required. Naturally these very large doors benefit from being power operated.


Typically the larger steel roller doors have a chain, or pole, manual override in the event of power failure.


Because of their very nature, roller doors require space above the opening for the door to roll. This varies dependant upon the type of door and the opening height but typically between 500mm to 600mm is required above the door 'head' to accommodate the door. This can have repercussions on the height of the building if the door is to be put in a side wall below the guttering as it can demand a taller building just to accommodate the door roll. There are options such as positioning the roller door in the gable end of the building or opting for an alternative type of door. Please talk to our Sales Team if you need any guidance on this matter as they will be pleased to oblige.


Of course should a door be positioned in the side wall then the bay length of the building ordinarily needs to be wide enough to accommodate the door width plus its associated mechanism and frame. If the bay length is insufficient then Three Counties Steel Buildings are expert at providing special frames to support the portal frame at that proposed door position. Of course, due to the nature of the undertaking there would be an extra cost for such work.


The entire steel roller door range from are available in a wide range of finishes including galvanised (typically the cheaper yet one of the most durable options), powder coated or Plasticol (a tough leather grain effect plastic finish) all in a wide range of colours.



Roller Doors

Roller doors are the most popular option for steel buildings when a large entrance is needed. The combination of their strong, reliable and secure design along with their relatively low cost mean they are suitable for most projects.


We offer a range of grade from Domestic Duty to Heavy Duty Industrial Strength. They can of course be motorised if required.


Due to the nature of a steel framed structure, multiple doors, windows and roller doors can be incorporated into the design without affecting its structural strength.​

Domestic steel framed garage and workshop specialists​ is a division of Three Counties Steel Buildings Ltd


Three Counties Steel Buildings Ltd, Unit 2 Newent Business Park, Newent, Gloucestershire. GL18 1DZ

Tel: 01531 822 251 | Email


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01531 822 251​

01531 822 251​