Fires can cause devastating damage to property and endanger human lives within just a few minutes. That is why good fire protection is one of the most important aspects of constructing and operating buildings. One effective tool in fighting fires is firestop seals, which prevent flames, smoke and heat from spreading between different parts of a building. This article explains what firestop seals are, how they work, what benefits they bring and why regular maintenance is absolutely essential.
What firestop seals are
Firestop seals are special systems and materials used to seal building openings, penetrations and joints to prevent fire and smoke from spreading between different parts of a building. They are used, for example, where pipes, cables or other services pass between rooms or floors. These penetrations are often potential weak points in fire protection, because without proper sealing a fire could spread through them quickly.
There are several types of firestop seals designed for different applications. The most common include sealing foams, sealing tapes, fire-resistant sealants and special collars. Each of these materials has specific properties that allow the protection to be tailored to a particular type of penetration.
How firestop seals work
The main function of firestop seals is to prevent fire, smoke and heat from spreading between different parts of a building. When exposed to high temperatures, these materials either expand or form a non-combustible barrier, closing off openings and preventing the flames from spreading.
For example, seals for plastic pipes are designed to expand in a fire, closing the space left where the pipe has melted. Similarly, seals for cable penetrations protect the cables from overheating and maintain the integrity of the fire barrier.
Benefits of firestop seals
Protecting buildings with firestop seals brings a number of benefits.
- Protecting lives: firestop seals play a key role in protecting human lives by preventing fire and smoke from spreading quickly. They slow the fire down, giving occupants more time to evacuate and emergency services more time to respond.
- Limiting damage to property: because the fire does not spread as quickly, more of the building remains undamaged. The fire is confined to a smaller area, leading to less material damage and making the firefighters’ job easier.
- Strict legislation: most countries have strict fire regulations requiring firestop seals in certain types of buildings and applications. Using these technologies means you meet not only safety requirements, but also legal standards.
- Higher building value: buildings with well-implemented fire protection systems, including firestop seals, are more attractive to potential investors and tenants because they represent a lower risk of damage in a fire.
How firestop seals protect buildings and lives
When a fire breaks out in a large building such as an office complex, a hospital or a block of flats, it is vital that the fire does not spread between different spaces. This is exactly where firestop seals play a crucial role. They keep the fire on one side of a wall or ceiling while the occupants on the other side have time to leave the building safely.
Because firestop seals stop smoke from spreading, they also reduce the risk of smoke inhalation, which is often the main cause of death in fires. Properly installed and maintained seals can literally make the difference between life and death in an emergency.
Fire protection for cable installations
Cable installations are an integral part of modern buildings. They carry not only electrical power, but also the data flows essential for today’s society. Any disruption to their operation, whether due to a technical fault or a fire, can have significant economic consequences. More importantly, it can endanger human lives.
In a fire, the priority is to keep systems that are critical for safety working – such as fire alarm systems or emergency lighting. Protecting cable runs from fire is therefore essential not only for protecting property, but also for keeping people safe.
The risks of burning cables
Cables, especially those with plastic insulation, pose a major risk in a fire. The insulation is combustible and, when exposed to high temperatures, can drip or release toxic gases. The smoke released when cables burn is often very dangerous because it contains toxic substances that can quickly endanger the health of people in the building, even in places far from the seat of the fire.
That is why it is essential to ensure proper fire protection for cable routes and distribution systems. This not only prevents property losses, but also protects the lives and health of people in the building.
Safe penetrations for pipes and cables
One of the most important aspects of a building’s fire protection is properly sealed penetrations for pipes and cables. These penetrations often connect different floors or rooms and are a key place where fire can find a way through if they are not properly sealed.
Pipe penetrations, especially for plastic pipes, require special seals that expand in a fire and close the gap where the pipe melts. Cable penetrations in turn require seals that prevent smoke and flames from spreading along the cables between different parts of the building.
Examples of unsuitable solutions
An unsuitable or incorrectly installed firestop seal can be just as dangerous as no seal at all. Common mistakes include:
- Using non-certified materials: materials that do not meet fire standards can fail when exposed to high temperatures and fail to protect the building from the spread of fire.
- Incorrect installation: even high-quality seals must be installed correctly according to the manufacturer’s instructions. If they are not installed by a professional, they may not do their job.
- Ignoring penetrations during renovations: renovations or alterations often create new penetrations for services that are then not properly sealed.
Unsuitable solutions, such as ordinary expanding foam or makeshift plugs made of combustible materials, are unfortunately common practice. These materials are not only unsightly and can spoil the look of an interior, but above all they lack the required resistance to fire and water. They also cannot effectively prevent a fire from spreading, which can result in fire spreading rapidly into other parts of the building.
The obligation to carry out regular inspections
One of the key ways to prevent a fire from spreading is to regularly check the integrity and functionality of firestop seals. Building owners are obliged to have these elements checked regularly to minimise the risk of fire, smoke and toxic gases spreading into other fire compartments. This protects not only lives, but also property.
According to the ČSN EN 13501 standards, firestop seals must meet the same fire resistance requirements as the structure they seal. This includes not only resistance to the spread of flames, but also insulation against heat. If these measures are compromised, the risk of a fire starting or spreading can increase dramatically.
Regular inspections are not only an obligation, but also a key factor in maintaining maximum protection for the building. Without them, even high-quality seals can lose their effectiveness over time.
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