Fireproof mass is an advanced solution for passive fire protection that can literally save the lives of building occupants in the event of a fire. At Onninen, as a market leader in installation, we have been providing professional installers with access to the highest quality protective products that meet strict safety standards and guarantee effective protection against the spread of fire.
The importance of fireproof masses in modern construction goes far beyond merely meeting legal requirements. It is a strategic element of the safety system of every building, which in the event of a fire can determine the evacuation time for residents and limit material losses.
Our team of experts at Onninen observes a growing interest in professional fire protection solutions among installers. Awareness of the importance of properly securing installation passages is constantly increasing, which translates into a greater demand for high-quality fireproof masses and professional technical advice.
Check buffer tanks and accessories at Onninen wholesale
What is fireproof mass and how does it work in practice
Fireproof mass is a specialized construction material made from acrylics or polyurethanes, which exhibits unique swelling properties when exposed to high temperatures. Under normal usage conditions, it remains plastic and flexible, allowing for the natural movements of the building.
The mechanism of action of fireproof mass is based on an endothermic reaction. When the temperature reaches around 140-200°C, the mass begins to rapidly increase in volume, creating a tight insulating barrier. In this process, it absorbs significant amounts of heat, which further slows the spread of fire.
Key technical properties of fireproof masses
From our many years of experience at Onninen, we find that the most important technical parameters of fireproof masses include:
- Fire resistance class: EI 30 to EI 240 minutes
- Expansion coefficient: up to 30 times volume increase
- Activation temperature: 140-200°C
- Adhesion to substrate: minimum 0.08 N/mm²
- Weather resistance: depending on the type of product
In Onninen's assortment, you will find fireproof masses from various manufacturers, tailored to specific project requirements. Each product in our offer has current certificates and technical approvals, ensuring compliance with applicable standards.
Where and when to use fireproof mass
Fireproof mass is used wherever it is necessary to maintain the continuity of fire separation in places where installations pass through walls and ceilings. As experienced suppliers of installation solutions at Onninen, we observe the most common applications in the following locations:
Installation passages in residential buildings
In multi-family buildings, fireproof mass secures passages:
- Electrical cables through walls and inter-floor ceilings
- Pipes of sanitary and heating installations
- Ventilation and air conditioning ducts
- Internet and telecommunications installations
Public utility buildings
In schools, hospitals, offices, and shopping centers, fireproof mass is crucial for:
- Securing installation shafts
- Sealing passages in the walls of evacuation corridors
- Protecting high-voltage cable routes
- Insulating passages for fire protection installations
Industrial and warehouse buildings
In industrial facilities, fireproof mass secures passages for technological installations that are critical for employee safety.
| Building type | Most common applications | Required EI class |
|---|---|---|
| Multi-family residential | Passages for cables and pipes in inter-apartment walls | EI 60-120 |
| Public utility | Installation shafts, evacuation corridors | EI 90-180 |
| Industrial | Technological installations, safety systems | EI 120-240 |
| Warehouse | Passages for installations in fire separation walls | EI 60-120 |
Types of fireproof masses and their applications
In Onninen's assortment, we offer various types of fireproof masses tailored to specific installation requirements. Each type is characterized by unique properties and areas of application.
Acrylic masses based on water
Acrylic masses represent the most universal group of products in our offer. They are easy to apply, environmentally friendly, and effective over a wide range of working temperatures.
The main advantages of acrylic masses include:
- Easy application directly from the cartridge
- Paintable after curing
- Good adhesion to most construction materials
- Low toxicity and no unpleasant odor
Polyurethane masses
Specialist polyurethane masses in our assortment are characterized by exceptional flexibility and resistance to thermal deformation. We particularly recommend them in installations exposed to frequent temperature changes.
Endothermic masses
Advanced endothermic masses available at Onninen exhibit a dual protective mechanism. In addition to swelling, they actively absorb heat from the environment, extending the fire resistance time.
Our specialists recommend endothermic masses in facilities with particularly high safety requirements, such as hospitals or long-term care centers.
Proper installation of fireproof mass step by step
The effectiveness of fireproof mass largely depends on the proper execution of the installation. At Onninen, we provide not only high-quality materials but also comprehensive technical support
for installers.
Surface preparation
The basis for a durable and effective seal is proper substrate preparation:
- Cleaning: Removal of dust, oil, wax, and residues of construction materials
- Degreasing: Particularly important for metal surfaces
- Moistening: Lightly moistening very porous surfaces improves adhesion
- Temperature control: The temperature of the substrate and air should be within the range of 5-40°C
Application of fireproof mass
From our experience in handling thousands of installation projects, we find that a systematic approach to application is key to success:
- Choosing the right tool: Silicone gun or spatula depending on the consistency of the mass
- Filling gaps: The mass should completely fill the space around the conduit, without leaving empty spots
- Shaping the surface: Smoothing the surface of the mass for an aesthetic finish
- Thickness control: Minimum layer thickness according to the product technical data sheet
Quality control and documentation
Every completed sealing should be documented by:
- A photograph of the completed passage with location marking
- Identification stickers with basic technical data
- An entry in the facility book with the date of execution and materials used
Common mistakes when using fireproof mass
Analysis of complaints and technical inquiries at Onninen has allowed us to identify the most common problems occurring during the installation of fireproof masses. Knowing these pitfalls helps avoid costly mistakes.
Material selection errors
Incorrect selection of the type of mass for a specific application can result in a loss of effectiveness of the protection:
- Using mass for indoor applications in places exposed to atmospheric factors
- Applying mass with an inappropriate fire resistance class
- Ignoring requirements regarding thermal movement in joints
Installation errors
The most commonly encountered execution problems are:
- Insufficient cleaning of the substrate - results in poor adhesion
- Too thin a layer of mass - does not provide the required fire resistance
- Leaving empty spaces - creates pathways for fire and smoke
- Installation at an inappropriate temperature - affects the curing process
Our technical team at Onninen regularly conducts training for installers, during which we discuss these and other aspects of proper installation of fire protection measures.
Integration of fireproof mass with buffer tanks and accessories
In modern heating installations, where advanced buffer tanks and accessories are used, fire protection takes on particular importance. Fireproof mass plays a key role in protecting critical points of the installation.
Securing installation passages at heat buffers
Installing a 800l buffer requires numerous installation passages through building partitions. In Onninen's assortment, we offer products such as the GALMET SG-B 800L buffer tank, which require professional securing of all conduit connections.
Key points requiring protection with fireproof mass:
- Passages for power supply conduits for circulation pumps
- Installations for temperature sensors and regulators
- Wires for monitoring and automation systems
- Hydraulic connections passing through technical walls
Guidelines for installers of buffer systems
When installing protections in systems with heat buffers, our experts at Onninen recommend paying special attention to:
- Working temperature of conduits - fireproof mass must be selected so that it does not activate during normal operation of the installation
- Thermal movements of the installation - expansion of conduits must not compromise the integrity of the seal
- Service availability - the ability to disassemble elements without compromising protections
More information on the professional selection of heat buffers can be found in our article on the best heat buffers, where we discuss safety and installation aspects in detail.
Frequently asked questions
1. What is the difference between fireproof mass and fire foam?
Fireproof mass is a swelling sealant applied from a cartridge, while fire foam is a two-component system. The mass offers greater application precision in small gaps, while foam is suitable for filling larger spaces. In Onninen's assortment, we offer both types of products, tailored to different project requirements.
2. How long does the effectiveness of fireproof mass last?
Properly executed fireproof mass maintains effectiveness for 20-30 years under normal operating conditions. Protection against atmospheric factors and regular maintenance is crucial. Products from our offer come with long-term manufacturer warranties, confirming their reliability over the long term.
3. Does fireproof mass require periodic inspections?
Yes, the condition of fireproof masses should be checked every 12 months. During the inspection, adhesion to the substrate, absence of cracks, and integrity of the seal are checked. Our specialists at Onninen offer support in organizing such inspections and providing materials for potential repairs.
4. What documents are required when accepting installations with fireproof mass?
The following are required: product technical data sheet, certificate of compliance, installation protocol, and photographic documentation. Each passage must be marked with an information sticker. At Onninen, we provide complete technical documentation for all fire protection products, facilitating the acceptance process of installations.
5. Can fireproof mass be used in high-voltage installations?
Yes, special fireproof masses are suitable for securing high-voltage installations up to 1000V. They require additional electrical certificates and dielectric properties. In Onninen's offer, products dedicated to electrical installations are available, meeting electromagnetic safety standards.
6. How much does professional protection of a single passage with fireproof mass cost?
The cost of material for a single passage ranges from 15-50 PLN, depending on the size and fire resistance class. Additionally, the labor costs of the installer should be added. At Onninen, we offer competitive wholesale prices and comprehensive material sets, which help reduce costs for larger scale projects.
7. Is fireproof mass suitable for use in humid rooms?
Special fireproof masses designed for humid rooms maintain effectiveness at humidity levels up to 85% RH. Proper application and protection against direct contact with water are crucial. Products from Onninen's assortment offer various degrees of moisture resistance, allowing for optimal material selection for each application.
8. How to recognize that fireproof mass needs to be replaced?
Signs that replacement is necessary include: visible cracks, detachment from the substrate, color and consistency changes. Particularly dangerous is the shrinkage of the mass, which creates pathways for fire and smoke. Our technical team at Onninen offers training on assessing the technical condition of fire protection measures.
Investment in safety for years
Fireproof mass is much more than just a construction material - it is an investment in the safety of building occupants for many years. Properly applied fire protection measures can determine the saving of human life and limit material losses in the event of a fire.
At Onninen, we understand that every installation project has its unique requirements. That is why we offer not only a wide range of the highest quality fireproof masses but also comprehensive technical support at every stage of implementation. Our experts with many years of experience in the installation industry provide professional advice on selecting optimal solutions.
We invite you to visit our branches throughout Poland, where our specialists will present the latest products in the field of fire protection. Remember - in matters of fire safety, there is no room for compromise. Choose proven solutions that will ensure effective protection for many years of operation.
The fireproof mass available at Onninen guarantees the highest quality of execution, compliance with the strictest safety standards, and professional technical support. Trust the experience of a market leader in installation and invest in safety that truly protects lives.