Ablative Coated Rock Wool Batt
Product Type: Ablative Coated Rock Wool Batt, Fire Stop Batt, Penetration Seal Insulation, Passive Fire Protection Batt
Standards: EN 1366-3 · EN 13501-2 · ASTM E2923 · AS 1530.4 · EN 13501-1
Applications: Wall & Floor Penetration Seals · Multi-Service Penetrations · Head of Wall · Blank Seals · Cavity Barriers · Large Framed Service Voids
About TARCO Industry — Your Trusted Ablative Coated Rock Wool Batt Manufacturer
As a professional ablative coated rock wool batt manufacturer, TARCO Industry produces high-quality fire stop batts and penetration seal insulation for passive fire protection applications.
Furthermore, our factory operates a complete production line from basalt rock melting to fiber forming, high-density batt formation, and precision ablative coating application.
Consequently, this ensures consistent quality, competitive factory-direct pricing, and reliable global supply.
Therefore, the company engineers its ablative coated rock wool batt products to meet the rigorous demands of fire stopping, penetration sealing, and acoustic insulation projects across international markets.
In addition, as a direct rock wool factory, TARCO Industry eliminates middlemen and provides OEM/ODM services.
Moreover, we export our ablative coated rock wool batt and fire stop batt products to customers in North America, Europe, Australia, New Zealand, Southeast Asia, the Middle East, and Oceania.
Consequently, we provide full compliance documentation for each order. Specifically, you can explore our Rock Wool Blanket and Rock Wool Pipe Insulation for more insulation solutions.
Product Overview: Ablative Coated Rock Wool Batt
Ablative coated rock wool batt (also known as fire stop batt or penetration seal insulation) represents a high-density rock mineral wool core faced on both sides with a water-based ablative coating.
Specifically, the ablative coating reacts under fire conditions by releasing water vapour, which cools the surface and slows the passage of fire, heat, and smoke.
Consequently, this dual-layer structure delivers exceptional fire resistance, acoustic insulation, and thermal protection for wall and floor penetration seals.
TARCO Industry produces its ablative coated rock wool batt from high-quality basalt rock and blast furnace slag, melting these raw materials at temperatures exceeding 1500°C.
During production, we fiberize the molten rock using high-speed spinning wheels and form high-density batts with a low resin binder content.
Ultimately, the product is precision-cut and coated on both faces with a factory-applied ablative coating, ensuring consistent fire performance and durability.
Key Features & Benefits of Ablative Coated Rock Wool Batt
Furthermore, the ablative coating provides up to 240 minutes of fire resistance integrity and insulation when tested in accordance with EN 1366-3 and AS 1530.4.
Additionally, the high-density stone wool core (140-180 kg/m³) delivers excellent fire performance with a melting point exceeding 1000°C.
Moreover, the product achieves Euroclass A1 non-combustible fire classification per EN 13501-1, the highest possible fire rating.
Consequently, the ablative coated rock wool batt provides excellent acoustic performance with a weighted sound reduction index (Rw) of up to 57 dB.
Therefore, the water-repellent core maintains thermal performance even in humid environments.
In addition, the product is lightweight, easy to cut, and designed for friction-fit installation in wall and floor openings.
Furthermore, the ablative coating is factory-applied under controlled conditions, ensuring consistent thickness and performance.
Finally, the stone wool core is recyclable and can be transformed into new insulation products at end of life.
Fire Stopping Performance — Ablative Coating Mechanism
Furthermore, the ablative coating is specifically engineered to enhance fire resistance through an endothermic reaction when exposed to high temperatures.
Additionally, when fire reaches the coating surface, the ablative material releases water vapour that cools the surface and absorbs heat energy.
Moreover, this process forms a char layer that further insulates the underlying stone wool core and slows heat transfer.
Consequently, this dual-action mechanism — cooling and char formation — significantly extends the fire resistance period compared to uncoated rock wool batts.
The following table summarizes the fire resistance performance of ablative coated rock wool batt at different thicknesses.
| Thickness (mm) | Density (kg/m³) | Fire Resistance | Test Standard | Typical Application |
|---|---|---|---|---|
| 50 | 140 | EI 120 (2 hours) | EN 1366-3 / AS 1530.4 | Single service penetrations |
| 50 | 160 | EI 120 – EI 180 | EN 1366-3 | Multi-service penetrations |
| 60 | 180 | EI 120 – EI 240 (4 hours) | EN 1366-3 / AS 1530.4 | Large framed service voids |
| 70-100 | 140-180 | EI 240 (4 hours) | AS 1530.4 / EN 1366-3 | Cavity barriers, head of wall |
Specifically, a single 50 mm thick batt provides up to 2 hours of fire resistance, while a 60 mm thick batt achieves up to 4 hours depending on the application and substrate.
Therefore, TARCO Industry ablative coated rock wool batt provides flexible solutions for various fire compartmentation requirements.
Technical Specifications — Ablative Coated Rock Wool Batt
Physical & Thermal Properties
Furthermore, the following table details the physical and thermal properties of our ablative coated rock wool batt.
| Parameter | Unit | Value / Range | Standard |
|---|---|---|---|
| Density | kg/m³ | 140 – 180 (customizable) | ASTM C167 / EN 1602 |
| Thickness | mm | 50 – 100 | ASTM C167 / EN 823 |
| Standard Size | mm | 1200 × 600 | — |
| Thermal Conductivity (λ) at 10°C | W/m·K | 0.034 – 0.040 | EN 12667 / ASTM C518 |
| Thermal Conductivity (λ) at 50°C | W/m·K | 0.040 – 0.048 | ASTM C518 |
| Max. Service Temperature (Core) | °C | 650 | EN 14706 / ASTM C411 |
| Melting Point | °C | > 1000 | DIN 4102-17 |
| Fiber Diameter | μm | 4.0 – 7.0 | GB/T 13350 |
| Coating Type | — | Water-Based Ablative Coating on Both Sides | — |
| Coating Thickness (Dry Film) | mm | 0.5 – 1.0 | — |
| Coating Density | g/cm³ | 1.35 – 1.55 | — |
| Water Repellency | % | > 98 | GB/T 10299 |
| Sound Reduction Index (Rw) | dB | Up to 57 (depending on installation) | EN ISO 10140-2 |
| Recyclability | — | Stone wool core is recyclable | — |
Fire Performance & Safety
Additionally, the following table outlines the fire performance and safety standards for ablative coated rock wool batt.
| Parameter | Result | Standard |
|---|---|---|
| Reaction to Fire (Core) | Euroclass A1 / Non-combustible | EN 13501-1 |
| Reaction to Fire (Coated) | Class E minimum | EN 13501-1 |
| Fire Resistance (Penetration Seals) | EI 120 – EI 240 (up to 4 hours) | EN 1366-3 / AS 1530.4 |
| Fire Classification | EI 120 to EN 13501-2 | EN 13501-2 |
| Flame Spread Index (FSI) | 0 – 25 | ASTM E84 |
| Smoke Developed Index (SDI) | 0 – 50 | ASTM E84 |
| Longevity of Fire Stop Materials | 30 years | ASTM E2923-14 |
| Non-combustibility | Non-combustible | ASTM E136 / AS 1530.1 |
International Standards Compliance for Ablative Coated Rock Wool Batt
TARCO Industry manufactures and tests its ablative coated rock wool batt products in accordance with the following international standards, ensuring global market compatibility and regulatory compliance.
Furthermore, you can verify these standards on the official websites of ASTM International, ISO, and Standards Australia.
EUROPE EN 1366-3 — Fire Resistance Tests for Service Installations: Penetration Seals
Furthermore, EN 1366-3 represents the European Standard that specifies fire resistance tests for service installations, specifically penetration seals.
Additionally, this standard evaluates the ability of a penetration seal to maintain fire resistance integrity and insulation when services pass through fire-rated walls and floors.
Moreover, TARCO Industry ablative coated rock wool batt has been tested as a penetration seal to EN 1366-3, providing fire resistance periods of up to EI 240 depending on thickness and application.
Therefore, the product meets the requirements of the Construction Products Regulation (EU) No 305/2011 (CPR) for penetration seals.
Standard EN 13501-2 — Fire Classification of Construction Products: Fire Resistance
Specifically, EN 13501-2 covers the fire classification of construction products and building elements based on fire resistance test data.
Moreover, TARCO Industry ablative coated rock wool batt achieves classifications up to EI 120 to EN 13501-2, with higher ratings available for thicker batts.
Standard EN 13501-1 — Fire Classification of Construction Products: Reaction to Fire
In addition, EN 13501-1 covers the reaction to fire classification of construction products.
Furthermore, the stone wool core of TARCO Industry ablative coated rock wool batt achieves Euroclass A1 (non-combustible), the highest possible rating.
Additionally, the ablative coating achieves a minimum of Class E reaction to fire classification.
Standard EN ISO 10140-2 — Airborne Sound Insulation
Consequently, EN ISO 10140-2 specifies laboratory measurement of airborne sound insulation of building elements.
Moreover, TARCO Industry ablative coated rock wool batt achieves a weighted sound reduction index (Rw) of up to 57 dB, providing excellent acoustic performance alongside fire protection.
AUSTRALIA / NEW ZEALAND AS 1530.4 — Fire Resistance Tests of Elements of Building Construction
Furthermore, AS 1530.4 represents the Australian Standard fire resistance test method for elements of building construction.
Additionally, TARCO Industry ablative coated rock wool batt has been tested to AS 1530.4, achieving Fire Resistance Levels (FRL) of up to -/240/180 depending on thickness and application.
Therefore, the product meets the requirements of the National Construction Code (NCC) for passive fire protection systems.
Standard AS 4072.1 — Components for the Protection of Openings in Fire-Resistant Separating Elements
Specifically, AS 4072.1 specifies requirements for components used to protect openings in fire-resistant separating elements.
Moreover, TARCO Industry ablative coated rock wool batt conforms to AS 4072.1 requirements for penetration seal systems.
USA / NORTH AMERICA ASTM E2923 — Longevity Assessment of Fire Stop Materials
Furthermore, ASTM E2923 represents the standard test method for longevity assessment of fire stop materials.
Additionally, this standard evaluates the durability and long-term performance of fire stop materials exposed to environmental conditions.
Moreover, TARCO Industry ablative coated rock wool batt achieves a 30-year longevity rating per ASTM E2923-14, ensuring reliable long-term fire protection.
Standard ASTM E84 — Surface Burning Characteristics of Building Materials
In addition, ASTM E84 covers the test method for surface burning characteristics of building materials.
Furthermore, TARCO Industry ablative coated rock wool batt achieves a Flame Spread Index (FSI) of 0-25 and a Smoke Developed Index (SDI) of 0-50, meeting the requirements for fire safety in building applications.
Standard ASTM E285 — Oxyacetylene Ablation Testing of Thermal Insulation Materials
Additionally, ASTM E285 covers the standard test method for oxyacetylene ablation testing of thermal insulation materials.
Moreover, this test method screens ablative materials to determine relative thermal insulation effectiveness when tested as a flat panel in a steady flow of hot gas provided by an oxyacetylene burner.
Consequently, TARCO Industry uses this test method to evaluate the ablative performance of its coated rock wool batt under extreme heat flux conditions.
Standard Sizes & Customization of Ablative Coated Rock Wool Batt
Furthermore, TARCO Industry offers a comprehensive range of standard sizes for ablative coated rock wool batt products.
Additionally, we provide custom dimensions, densities, and coating thicknesses upon request. The standard size chart below shows the typical density-thickness combinations available.
| Density (kg/m³) | Thickness (mm) | Standard Size (mm) | Coating | Typical Application |
|---|---|---|---|---|
| 140 | 50 | 1200 × 600 | Both Sides | Single service penetrations, 2-hour fire rating |
| 140 | 60 | 1200 × 600 | Both Sides | Multi-service penetrations, 2-4 hour fire rating |
| 160 | 50 | 1200 × 600 | Both Sides | Enhanced acoustic performance, fire seals |
| 180 | 50 | 1200 × 600 | Both Sides | Large framed voids, cavity barriers |
| 180 | 60 | 1200 × 600 | Both Sides | Up to 4-hour fire resistance |
| 180 | 70-100 | 1200 × 600 | Both Sides | Severe conditions, head of wall |
Available Coating Options for Ablative Coated Rock Wool Batt
Furthermore, we offer various coating options to meet different application requirements.
Specifically, the standard option provides a water-based ablative coating on both sides for maximum fire protection.
Additionally, single-side coating is available for applications where one side is concealed.
Moreover, the coating can be supplied in white or off-white color to suit aesthetic requirements.
Consequently, the ablative coating can be over-coated with suitable emulsion or eggshell paint for decorative purposes after installation.
Finally, the coating incorporates traceability technology for quality assurance and installation verification.
Applications of Ablative Coated Rock Wool Batt
Furthermore, this product is widely used in wall and floor penetration seals for multi-service penetrations, particularly in commercial and industrial buildings.
Additionally, it is ideal for head of wall and blank seals where fire compartmentation must be maintained.
Moreover, it serves as cavity barriers in large framed service voids and behind cladding systems.
Consequently, it is utilized for face-fixed applications where space constraints require surface-mounted fire protection.
Therefore, it is applied in data centers and telecommunication facilities where cable and pipe penetrations require fire sealing.
In addition, it is used in healthcare facilities and hospitals where fire compartmentation and acoustic performance are critical.
Finally, it is applied in airports and transportation hubs where large service voids and multi-service penetrations are common.
Packaging & Delivery
Furthermore, our packaging utilizes polyethylene heat-shrinkable film or cartons for efficient handling, transport, and storage.
Additionally, a 40HQ container can hold approximately 1,800 – 2,500 m² depending on thickness and density.
Moreover, the lead time is 7 – 15 days after deposit.
Consequently, the port of loading is Tianjin, Qingdao, or Shanghai, China.
Why Choose TARCO Industry as Your Ablative Coated Rock Wool Batt Supplier
Furthermore, TARCO Industry is a professional ablative coated rock wool batt manufacturer with full production capabilities, which means no middlemen and competitive pricing.
Additionally, our products are certified to EN 1366-3, EN 13501-2, ASTM E2923, AS 1530.4, and EN 13501-1 for global market access.
Moreover, we provide OEM/ODM services for density, thickness, dimensions, coating, and packaging.
Consequently, our production is ISO 9001-certified with batch testing and third-party inspection support.
Therefore, we serve customers in North America, Europe, Australia, New Zealand, Southeast Asia, the Middle East, and Oceania.
Finally, we offer short lead times and efficient logistics from major Chinese ports.
Frequently Asked Questions (FAQ)
What is ablative coated rock wool batt and where is it used?
Furthermore, ablative coated rock wool batt is a high-density rock mineral wool core faced on both sides with a water-based ablative coating. Therefore, it is commonly used for wall and floor penetration seals, head of wall, blank seals, and cavity barriers in commercial and industrial buildings.
How does the ablative coating work?
Moreover, the ablative coating reacts under fire conditions by releasing water vapour, which cools the surface and absorbs heat energy. Consequently, this process forms a char layer that further insulates the underlying stone wool core and slows heat transfer, significantly extending the fire resistance period.
What is the fire resistance of ablative coated rock wool batt?
Additionally, the product achieves fire resistance ratings of up to EI 240 (4 hours) depending on thickness, density, and application. A single 50 mm thick batt provides up to 2 hours, while a 60 mm thick batt achieves up to 4 hours.
Do your products comply with Australian and New Zealand standards?
Furthermore, we test TARCO Industry ablative coated rock wool batt in accordance with AS 1530.4 for fire resistance and AS 4072.1 for penetration seal components, achieving Fire Resistance Levels (FRL) of up to -/240/180.
Are your products certified for the European market?
Additionally, our ablative coated rock wool batt complies with EN 1366-3 for fire resistance testing, EN 13501-2 for fire classification, and EN 13501-1 for reaction to fire classification. The product is CE-marked under the Construction Products Regulation (EU) No 305/2011.
Can you provide samples before bulk order?
In addition, TARCO Industry offers free samples of ablative coated rock wool batt for quality evaluation. Please contact our sales team for sample arrangements.
