How To Be Energy Efficient In Large Openings Why Door Insulation Matters In The Automotive Industry
Automotive manufacturing and logistics sites need large openings so that vehicles, equipment and forklifts are able to move freely between spaces. But each time a door opens it risks leaking conditioned air, which leads to rising energy bills. Uncontrolled heat loss through industrial doorways is an overlooked drain on efficiency in the sector and is one of the easiest areas to fix. In this article, we will be looking at how to be more energy efficient with large openings in the automotive industry.
Large Openings Lead To Large Losses
Large industrial doorways are significant gaps in a building's thermal barrier. In facilities with frequent vehicle and pedestrian traffic, doors can be open or cycling for a large portion of the working day. Each time a door opens it allows conditioned air to escape and outside air to flood in. This results in forcing heating and cooling systems to work harder to compensate.
Over a year this constant exchange adds up. Poorly insulated or slow operating industrial doors cost money in wasted energy. They also create draughts and temperature fluctuations that affect staff comfort and process consistency on the shop floor.
Door Insulation & Speed
Door insulation is key, but operating speed is also another important feature to consider. A well insulated industrial door that stays open too long or cycles too slowly, lets air escape. That is why insulation performance and opening speed should be considered together when specifying a new door.
High speed doors with strong insulation values minimise the time an opening stays exposed to outside conditions, while also reducing conductive heat loss when closed. The end result is a more stable internal environment and reduced strain on HVAC systems.
The EFA‑SST® Therm is EFAFLEX's model of choice for large, fast, well insulated automotive doorways. It can be fitted to openings up to 5 metres wide and 5.1 metres high, opens at speeds up to 2.5 m/s and withstands up to 500,000 cycles. The thermally optimised curtain has U-values up to 1.4 W/m²K to minimise heat loss.
Why Automotive Facilities Need Top Door Performance
Automotive manufacturing has specific pressures that make door performance even more important:
- Temperature sensitive processes - paint shops & curing areas need stable ambient conditions
- High frequency traffic from forklifts, tugger trains & vehicles - doors
cycle constantly - Air quality and dust control are critical in assembly & paint environments
- Continuous operation across shifts - little tolerance for downtime or slow cycling
Each of these factors can increase the energy use and operational cost of a poorly performing door, which means that getting the right spec of high speed door is key.
Choosing The Right High Speed Door System
Specifying a door for a large automotive opening isn't just about the door size. It is worth considering insulation value (U-value), cycle speed, cycle frequency and durability under continuous use. Also be sure to look at how the door integrates with existing building management or safety systems. Spiral doors, fabric doors and our Next Generation high speed doors each suit different uses, from external loading bays to internal zone separation.
The right door choice depends on the opening, traffic pattern and environmental requirements of the space. This is why we undertake site assessments to deliver the best long term results for our clients.
A Smart Approach To Large Door Openings
Energy efficiency in large openings is about matching insulation, speed and durability to the individual automotive facility. Getting this right can reduce energy costs while improving comfort and facility processes.
If you'd like to find the right door solution for your site, we are able to help with an assessment of your facility's needs. Get in touch with our specialist team today.


