Industries and commercial enterprises need large doors to facilitate entry and exit of materials, transporting and lifting equipment, as well as to ensure protection to the premises. Steel doors are commonly used and can be roller shutters or sliding and folding shutters. Steel doors are however susceptible to rusting and denting and will require to be coated with protective paint or other coatings. One disadvantage with steel doors is that they have to be manufactured to the exact dimensions of the opening, as they cannot be trimmed or planed, as you can do with wooden doors.
Steel doors are made of a steel frame that is covered, often on two sides to present a sturdy construction. Adding insulation to steel doors is fairly easy, and this can be achieved by filling the gap between the two side panels. This insulation can be foam or any other form of insulating boards. The air gap between the two side plates also adds to the insulating properties. This insulation also adds to the stiffness of the door and renders it more sturdy. The weight increase from this insulating material is minimal and will not pose any additional problem in its operation.
Insulated doors can prevent the transfer of energy and will help to keep the interiors cooler, or prevent loss of heat from the interior during winters. The insulation also acts to increase the acoustic properties of the door and prevent noise from outside. This operation also helps to dampen the noise of operation. The insulation can also add to the fireproof rating of doors, and this helps in many cases to help in reducing insurance premiums for premises that have insulated steel doors installed for entry and protection.
The additional stiffness provided by the insulation also allows insulated steel doors to have better wind resistance and can help in protecting the premises during hurricanes and other adverse weather conditions. The provision of ventilation or vision panels can lead to the door insulation being slightly compromised, but with proper attention to the design and placing of these openings, this can be greatly reduced.
The insulating material used in steel doors is polyurethane, polystyrene, fibreglass, or even honeycombed kraft paper. This material adds to the fire resistance of the door and a rating of 180 minutes is an acceptable standard for industries. It is essential that any adhesives used for bonding the material also have proper thermal properties.
Even for the small internal doors in offices, shops and logistics centres, insulated steel doorsets have become very popular. They can be built to your exact specifications, within budget, any size, any colour — so you get a great deal of control over the look, durability and security of the door. Furthermore, these steel doorsets provide an effective alternative to solid timber doors, while guaranteeing excellent sound and thermal performance. If you need doorsets for your building, steel is a fine choice, and we recommend you take a look at the many manufacturers in the UK. With improved thermal efficiency and an increased lifespan, you can add value, protection and privacy to your building, no matter the size of your openings.