Arbosil 1070 - Intumescent & Fire Resistant Product
A one-part, low modulus fire-resisting silicone sealant that cures on exposure to moisture vapour, forming a highly elastic silicone rubber. Designed with excellent adhesion to concrete and other common construction substrates, Arbosil 1070 meets the stringent requirements of modern construction projects.
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Specify Arbosil 1070
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Unique properties of Arbosil 1070
Ideal for sealing movement joints and other critical details to prevent the passage of fire. Not recommended for use in floor joints unless specifically approved by ARBO Technical Services.
Up to 4 hours independently verified fire resistance
Excellent elasticity – 50% movement accommodation in butt joints
Excellent adhesion to concrete and common construction substrates
Very good UV resistance
Service life of 25 years+
Available in Grey and Black (special colours on request)
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Main Applications
Arbosil 1070 is for movement joints and critical sealing details where fire resistance and long-term elasticity are required.
Movement Joints
Seals movement joints in fire-rated construction, accommodating up to 50% movement in butt joints and 100% in lap joints.
Concrete & Masonry
Excellent adhesion to concrete, masonry and other common construction substrates without the need for a primer in most applications.
External Joints
Very good UV resistance makes it suitable for external joint sealing applications with a 25-year+ service life.
Fire-Retardant Glazing
Used in conjunction with Arboseal Intumescent Tape for fire-retardant glazing systems.
Technical Specifications & Downloads
| Description/Standard | Performance |
|---|---|
| Classification (BS EN ISO 11600) | F/G – 25 LM |
| Material | Silicone |
| Colours | Grey, Black (special colours on request) |
| Skin Time at 20°C/65% RH | 20–30 minutes |
| Application Temperature | +5°C to +50°C |
| Service Temperature | -50°C to +120°C |
| Typical Shore Hardness | 20–25 |
| Cure Rate at 20°C/65% RH | 1mm/24 hours |
| Chemical Resistance | Not recommended for use where there will be contact with chemicals unless approved by ARBO® Technical Services. |
| UV Resistance | Very Good |
| Service Life | 25 years+ |
| Movement Accommodation (butt joints) | 50% |
| Movement Accommodation (lap joints) | 100% |
| Fire Resistance | Up to 4 hours independently verified |
Associated Products
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Frequently Asked Questions
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Find your contacts
Regardless of whether you are an architect and planner, property developer, industry specialist, distributor, applicator or specifier – if you have any questions about our products, services or specific construction projects, please feel free to contact the CARLISLE® contact person in your area with your technical questions. Our experts will be happy to advise you.
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