Soudal B2 Genius Gun Fire & Acoustic Expanding Foam 600ml

£10.75ex. VAT
£10.75ex. VAT

Nationwide Delivery

Wed 10 Jun

Order by Monday at 2pm
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  • 38secs

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Delivery & Returns Information

Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.

Standard (Nationwide) Delivery

Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £75 £7.50 ex. VAT
Over £75 ex. VAT FREE

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £90 ex. VAT
Over £400 ex. VAT £55 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

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How delivery works

We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.

Delivery areas

Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.

If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.

What to expect on delivery day

  • Deliveries are typically kerbside.
  • Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
  • Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.

Why delivery can cost more than typical parcel delivery

Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.

Returns

Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.

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Key Features

  • {{holiday_village}} Perfect for filling voids and cavities in fire protection systems
  • {{health_and_safety}} Contains no harmful propellants (HCFC or CFC)
  • {{fact_check}} Bonds securely to most surfaces
  • {{filter_list}} Ideal for sealing gaps and joints 

Technical Specification

Technical Specification
URN: 1003103
Brand: Soudal
Size: 600ml
Sales Unit: Each
Manufacturer's Reference: 135233

Product Overview

Soudal B2 Genius Gun Fire & Acoustic Expanding Foam in a 600ml aerosol can is a one-component, self-expanding polyurethane foam designed for sealing, filling, and insulating where enhanced fire protection is required. 

Developed for professional passive fire protection, it provides a reliable barrier against the spread of fire, smoke, air, and moisture in structural gaps and penetrations.


The foam cures with ambient moisture to form a dense, semi-rigid cellular structure offering both fire resistance and acoustic insulation. 

Once cured, it remains stable under temperatures from -40°C to +90°C, maintaining structural integrity and long-term adhesion to most construction substrates including masonry, timber, and metals.

Equipped with the patented Genius Gun adapter system, the 600ml can allows precise, single-handed application with full control over flow and dosage, reducing waste and ensuring even filling of cavities. 

The formulation is completely free from HCFC and CFC propellants, providing a more sustainable, environmentally responsible alternative.


With an expansion rate of approximately 135% during curing and minimal post-expansion once set, Soudal B2 Genius Gun foam ensures consistent joint sealing, excellent acoustic reduction (58 dB), and thermal conductivity of just 35.4 mW/m·K. 

Features & Benefits

  • Fire Resistance (B2 Rated): Classified according to DIN 4102 as B2, offering effective flame-retardant performance in fire-rated construction joints and penetrations.
  • High Filling Capacity: Expands up to 135% during curing to fill large gaps, voids, and irregular cavities efficiently.
  • Excellent Adhesion: Bonds strongly to most building materials including concrete, brick, stone, wood, and metal, excluding PE, PP, and PTFE.
  • Acoustic Insulation: Delivers high sound reduction performance up to 58 dB, ideal for noise control in partition and service wall applications.
  • Thermal Insulation: Reduces heat transfer with a thermal conductivity value of 35.4 mW/m·K, enhancing energy efficiency in building envelopes.
  • Stable and Durable: Maintains volume and structure with less than 5% shrinkage and no post-expansion after curing, ensuring lasting results.
  • Environmental Safety: Propellant gases are HCFC- and CFC-free, ensuring no harm to the ozone layer or greenhouse contribution.
  • Ease of Application: The Genius Gun system allows precise, comfortable, and controlled one-hand use without the need for additional tools.
  • Temperature Resistance: Retains structural performance between -40°C and +90°C once fully cured, ensuring dependable use in varied environments.
  • Size – 600ml Aerosol: Each 600ml can yields approximately 25 litres of free-foamed material or up to 18 metres of filled joint, ensuring efficient on-site coverage.


Applications

  • Passive Fire Protection: Seals joints, service penetrations, and gaps in fire-rated wall and floor systems.
  • Window and Door Installations: Provides airtight and fire-retardant sealing around window and door frames.
  • Expansion and Connection Joints: Prevents air, moisture, and sound leakage through construction joints.
  • Pipe and Cable Penetrations: Forms a stable, insulating seal around service entries in walls and ceilings.
  • Thermal and Acoustic Insulation: Improves sound and heat control around structural elements.
  • General Construction Sealing: Suitable for cavities, roof openings, and partition wall installations requiring high insulation and stability.


Installation Guidance

  • Surface Preparation: Ensure surfaces are clean, dry, and free from dust, oil, or grease before application.
  • Moistening: Lightly moisten surfaces with clean water prior to applying foam to promote adhesion and curing.
  • Application: Shake can vigorously for at least 20 seconds, attach the Genius Gun adapter, and fill gaps to one-third of their depth to allow for controlled expansion.
  • Layering: For deep cavities, apply foam in layers, re-moistening between layers to ensure full cure.
  • Cleaning: Remove uncured foam immediately using Soudal Gun & Foam Cleaner or acetone; cured material must be removed mechanically.
  • Storage: Store can upright in a cool, dry place between +5°C and +25°C; ensure nozzle is sealed after use.


Compliance & Performance

  • Fire Classification: Rated B2 under DIN 4102 for flame-retardant performance.
  • Thermal Conductivity: 35.4 mW/m·K according to EN 17333-5 for high insulation efficiency.
  • Sound Reduction: Provides 58 dB acoustic insulation in compliance with EN ISO 717-1.
  • Mechanical Strength: Compressive strength approx. 37 kPa; tensile strength 78 kPa; elongation at break 22.7%.
  • Density and Structure: Approx. 40 kg/m³ free-foamed density with 70% closed cells for excellent structural stability.
  • Water Absorption: Approx. 0.20 kg/m² per EN 29767, providing controlled moisture resistance.
  • Curing and Cutting Time: Surface skins within 8.5 minutes; cuttable after approx. 65 minutes at standard conditions.
  • Environmental Compliance: Manufactured without HCFCs or CFCs in accordance with environmental safety standards.
  • Important Note: Always wear protective gloves and goggles during application. Use only in well-ventilated areas. Cured foam should never be burned; remove mechanically where necessary.



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