What is a highly fire-resistant door? Highly fire-resistant doors explained in simple terms!
29. November 2024A highly fire-resistant door is one of the three quality levels of a fire protection door or fire-rated door. It must withstand fire for at least 60 minutes. This corresponds to the second quality level, alongside the fire-resistant door, which must withstand fire for at least 30 minutes, and the fireproof door, which must resist fire for at least 90 minutes.

The highly fire-resistant door and its characteristics
The DIN 4102 standard regulates how a fire protection door in general—and a highly fire-resistant door in particular—must be designed. In addition, there is the DIN EN 13501-2 standard, which regulates fire resistance classes at the European level. Both standards are currently considered equivalent, although the European standard is more precise.
A highly fire-resistant door must be constructed as follows: Its load-bearing parts made of combustible materials must be covered on all sides with a fire-protective layer made of non-combustible materials. The insulating materials of a highly fire-resistant door must also consist of non-combustible materials.
Highly fire-resistant doors are usually functional steel doors that may also include additional features, such as a panic function or smoke protection. They are relatively rare because they are only required in specific cases. In most situations, either a fire-resistant door (level 1) is sufficient, or a fireproof door (level 3) is required. For this reason, the market for highly fire-resistant doors is quite limited, and many manufacturers do not even include them in their product range; if they do, they are usually single-leaf steel doors.
It is important that a highly fire-resistant door is installed properly and only with approved fastening materials, which is why this task should be carried out by a qualified specialist company. Such companies must also regularly inspect the functionality of a highly fire-resistant door.
Burglar protection for your highly fire-resistant door
A highly fire-resistant door is indeed very robust when it is built as a solid steel door, but if the lock can be easily picked, even the strongest door loses its effectiveness. We, Locksmith Service Munich – Mario Pichelmaier, are a specialist company for security technology and can help you make your highly fire-resistant door as burglary-resistant as possible—for example, by reinforcing the lock with an additional security lock.
A highly fire-resistant door is only rarely installed in private homes; it is mainly used in public or commercial buildings. However, if you want to improve the burglary protection of your own home, we will be happy to assist you with our expertise. Call us and arrange an appointment. We will inspect your property for weak points that could make it easy for burglars to break in. Based on this assessment, we can create a customized burglary protection concept tailored to your home. If you like it, our highly trained technicians can implement it using only security technology from reputable manufacturers.
Lock defective or key lost? Locksmith Service Munich – Mario Pichelmaier helps you out of trouble!
In addition to burglary protection, our other main focus is damage-free door opening, meaning we are not only a security company but also a locksmith service. If you have lost your key, it has broken off in the lock, or the lock suddenly stops working, we are your reliable contact—available around the clock, every day of the year. We open highly fire-resistant doors just as competently and quickly as any standard door.
So if you are standing in front of your locked front door without a key—because you forgot it inside or the door accidentally slammed shut behind you—we are immediately on our way. A single call is enough, and we will leave right away, because there is always a locksmith nearby on duty ready to help you. After your call, it takes about 30 minutes, and then we are there and begin the door opening, which usually only takes a few minutes.
Whether it is professional burglary protection, damage-free door opening, or one of our other services—such as lock changes for doors, safes, garages, mailboxes, or drawers—you receive everything at a fair and transparent fixed price. We inform you of the cost before you commission us. Once stated, the price remains fixed and will not change. We guarantee this as part of our fixed-price guarantee!