WHAT DOES IT MEAN?
An insulated roller garage door uses a curtain construction intended to reduce heat transfer, commonly through double-skinned slats with an insulating core.
In practice
It combines the roller mechanism’s vertical travel and coiled storage with the specified insulating construction. The exact curtain, guides, seals and fitting arrangement determine the complete product rather than the category name alone.
The benefit depends on the way the garage is used and the rest of the building. Discuss the roof, walls, floor and required ventilation when considering a wider improvement project. If comparing performance figures, establish whether they relate to a single element or a complete door of a stated size.
