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Rockwool Acoustic Intumescent Sealant 310ml Cartridge
Intumescent sealant for fire stopping joints and service penetrations. Suitable for walls, partitions, door frames, and glazing. Provides up to 4 hours tested fire resistance while maintaining acoustic performance.
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Wed 26 Nov
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- 19hrs
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Product Overview
Intumescent sealant for fire stopping joints and service penetrations. Suitable for walls, partitions, door frames, and glazing. Provides up to 4 hours tested fire resistance while maintaining acoustic performance.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, EH, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, SA, SY & TD
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £20 ex. VAT |
| Over £100 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{local_fire_department}} For fire stopping joints and service penetrations
- {{assignment}} Suitable for walls, partitions, door frames, and glazing
- {{more_time}} Provides up to 4 hours tested fire resistance
- {{shield}} Maintains acoustic performance
Technical Specification
| Box Quantity: | 25 |
|---|---|
| Sales Unit: | Each |
| Brand: | Rockwool |
| Manufacturer's Reference: | 212902 |
Technical Downloads
Product Overview
Rockwool Acoustic Intumescent Sealant supplied in 310ml cartridges. High-performance, water-based acrylic sealant formulated for sealing linear joints and service penetrations within fire-rated wall and floor constructions.
Designed specifically for use with Rockwool Ablative Coated Batt, the sealant reinstates fire resistance, acoustic integrity, and air tightness where building services or joints interrupt compartment lines.
The intumescent formulation expands under fire conditions to close small gaps and restrict the passage of flames, smoke, and gases. Once cured, it forms a flexible, durable seal capable of accommodating building movement without cracking or loss of adhesion.
Tested to provide up to four hours’ fire resistance, the sealant also delivers verified acoustic and air leakage performance, making it suitable for both fire protection and sound control applications across multiple substrates.
Features & Benefits
- Fire performance: Provides up to 4 hours’ tested fire resistance when used in approved Rockwool systems.
- Acoustic and airtight sealing: Reduces airborne sound transmission and air leakage across compartment junctions.
- System compatibility: The only sealant approved for use with Rockwool Ablative Coated Batt installations.
- Versatile application: Suitable for sealing linear joints up to 50mm wide and individual service penetrations.
- Durable and flexible: Maintains adhesion and accommodates minor substrate movement without cracking.
- Ease of use: Ready-to-use, one-part water-based acrylic formula supplied in 310ml cartridges for standard applicator guns.
Applications
- Service penetrations: Seals around pipes, conduits, and cable trays passing through fire-rated walls or floors.
- Linear joints: Fills gaps up to 50mm wide between fire-resistant building elements.
- Ablative Coated Batt installation: Used for sealing cut edges, perimeter joints, and service apertures in Rockwool Ablative Coated Batts.
- Acoustic barriers: Applied to improve sound insulation and prevent flanking noise paths through joints and penetrations.
Installation Guidance
- Preparation: Ensure all surfaces are clean, dry, and free from dust, grease, or loose material.
- Application: Apply evenly using a standard mastic or sealant gun; tool off within 10 minutes for a smooth finish.
- Joint depth: For deeper gaps, insert a suitable backing material before sealing to maintain correct joint geometry.
- Curing: Allow to cure fully before exposure to moisture or overpainting; drying time varies with temperature and humidity.
- Clean-up: Remove excess material with a damp cloth before curing; clean tools with water.
Compliance & Performance
- Material specification: Water-based, one-part acrylic intumescent sealant.
- Fire performance: Tested to provide up to 4 hours’ integrity and insulation in accordance with BS EN 1366-3 and BS EN 1366-4.
- Acoustic performance: Independently tested to maintain sound reduction performance when sealing joints and penetrations.
- Movement capability: Suitable for linear joints up to 50mm wide with moderate movement tolerance.
- Compatibility: Approved for use with Rockwool Ablative Coated Batt and a wide range of common substrates.
- Environmental compliance: Low-VOC formulation; non-toxic and halogen-free.
- Important note: Fire resistance and acoustic performance are dependent on installation within a tested Rockwool FirePro® system configuration.
