OB1 Heat & Fire Resistant Sealant
£5.12 inc. VAT
£4.27 ex. VAT
- Product ID: 30629372
- Suitable For: Domestic application and industrial application to helf an invironment become more fire safe
- Area of use: INT & EXT
- Application Method: Sealant gun and may possibly need some sort of knife to cut the nose of the cartridge
- Time to full cure: 2-3mm/24 hours
- Volume: 290ml
- Container Type: Comes inside of a cartridge
- Type: Sealant
- Colour: White
- Brand: OB1
- Manufactuer: OB1, Siroflex LTD
- Box Size: 1
Features & Benefits
Features:
Fire Resistant (Up to 4 Hours): Tested to EN 1366-4, offering superior protection in fire-rated constructions.
Hybrid Polymer Technology: Combines the best properties of silicone and polyurethane for excellent performance.
Excellent Adhesion: Bonds to most common building materials including metal, concrete, timber, brick, and stone — often without primer.
Permanently Flexible: Accommodates movement in joints without cracking or losing adhesion.
Benefits:
Enhanced Safety Compliance: Meets strict fire safety regulations, making it suitable for use in both residential and commercial fire-rated assemblies.
Versatile Application: Can be used indoors and outdoors, even in high-temperature environments.
Easy to Apply and Finish: Smooth application with a professional finish; can be painted over when cured.
Eco-Conscious Choice: Low solvents, and silicones, ensuring minimal environmental and health impact.
OB1 HeatProtect Fire Resistant Hybrid Sealant is a high-performance, fire-rated sealant designed for professional use in environments where both fire resistance and long-lasting adhesion are critical. Engineered with hybrid polymer technology, OB1 HeatProtect offers exceptional resistance to heat, smoke, and fire, making it ideal for sealing joints and gaps in walls, ceilings, and floors in both domestic and industrial settings. It remains permanently flexible, adheres to most substrates without primer, and is paintable for a clean, seamless finish.
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Fire-resistant up to 4 hours (tested to EN 1366-4)
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Suitable for use on a wide range of materials including concrete, metal, and wood
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Ideal for interior and exterior applications requiring heat and flame protection
For more in our range of Fire and heat resistant sealants, please click here. For our full range of products from OB1, please click here.
For more information on OB1 and their products, you can visit their website here.
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Sealing Fire-Rated Joints and Gaps: Ideal for use in walls, ceilings, and floors to maintain the integrity of fire barriers.
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Around Pipework and Service Penetrations: Prevents the passage of fire and smoke around cables, ducts, and pipes.
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Perimeter Sealing of Fire Doors and Windows: Ensures fire-resistant structures remain compliant with regulations.
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Construction and Expansion Joints: Suitable for both internal and external joints exposed to heat or requiring movement accommodation.
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Industrial and Commercial Installations: Used in warehouses, factories, plant rooms, and high-risk fire zones.
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Domestic Applications: Fire-safe sealing around stoves, fireplaces, boilers, and heating systems.
Application Steps
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Surface Preparation:
Ensure all surfaces are clean, dry, and free from dust, grease, oil, and old sealant or debris. For best results, degrease non-porous surfaces. -
Masking (Optional):
Apply masking tape along edges to achieve clean lines and prevent spreading onto adjacent surfaces. -
Cut Nozzle and Load Cartridge:
Cut the nozzle to the desired bead size and load the cartridge into a standard sealant gun. -
Apply Sealant:
Extrude a consistent bead into the joint or gap. Ensure full contact with the surfaces to be sealed. -
Tooling and Smoothing:
Immediately tool the sealant with a spatula or jointing tool, using a smoothing agent if required, to ensure proper adhesion and finish. -
Curing:
Allow to cure. Skin formation typically begins within 10–20 minutes; full cure depends on joint depth and ambient conditions.
Limitations
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Not Suitable for Continuous Water Immersion: Avoid using in areas that remain permanently submerged.
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Paint Compatibility: Test on a small area first, as certain paints may not adhere well or may crack over time.
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Non-Structural Applications Only: Not designed for load-bearing or structural bonding.
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Do Not Apply in Wet Conditions: Surfaces must be dry during application for optimal adhesion and curing.
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Temperature Limitations: Application temperature range is typically between +5°C and +40°C; not recommended for use below freezing.
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| Elementlength | |||||||
| up to 1,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
|
| Type of window frame material |
Minimum witdth of joints for a butled mounting b in mm |
Minimum witdth of joints for a inner mounting b in mm |
|||||
| Hard PVC (white) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Hard PVC and PMMA (dark) (colour extruded) |
15 | 20 | 25 | 30 | 10 | 15 | 20 |
| Hard PUR integral foam | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Wood-aluminium-window | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (bright) |
10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (dark) |
10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Wooden window frame | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
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