The amount of headroom you need for a roller garage door depends on the type of roller door you are looking to install. Here in the UK, the two main types of roller doors are constructed from non-insulated, single skin steel or double skinned aluminium slats with an insulated foam core. Standard-sized single skin roller doors typically require a minimum of 420mm headroom inside your garage to allow space for the rolled-up steel curtain (this figure will increase for higher doors). Double skinned aluminium roller doors require less internal headroom (typically around 300mm) as the individual slats roll up more tightly, allowing the curtain to roll around a smaller barrel.
We offer a wide range of both insulated and non-insulated roller garage doors – get in touch to discuss your requirements with an experienced roller door fitter.