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Biyseal Bitumen Impregnated Foam seals gaps in metal wall and roof cladding, window frames, and skylights against dust, weather, and vermin. The bitumen-impregnated polyurethane structure also acts as a dampener for noise and vibration in concrete, brick, and block joints. It is a pre-formed, flexible strip that compresses to accommodate movement in building connections.
Where to use it
- Dust/draught/vermin proofing of metal wall & roof cladding.
- Vibration & noise control, air, weather and water-tight sealing.
- Roof valley & eave filler, window frames, skylights, ducting.
- Joints in concrete, brick & block expansion joints.
Benefits
- Durable.
- Weather-resistant.
- Does not extrude when compressed.
- Capable of withstanding numerous cycles of expansion and contraction without exhibiting fatigue or loss of its recovery properties.
- Naturally adheres to the sides of the joint, enhancing stability and sealing effectiveness.
Compatible substrates
- metal.
- concrete.
- brick.
- block.
Frequently Asked Questions About Biyseal Polyurethane Impregnated Foam
Q: How do I choose the right size of Biyseal foam for my application?
A: Select the foam width based on the joint opening: 5 times for weather resistance, 3-4 times for expansion joints, and 2 times for joint proofing. This ensures proper compression and effective sealing.
Q: What are the benefits of using bitumen-impregnated versus acrylic-impregnated foam?
A: Bitumen-impregnated foam offers excellent weather resistance and is ideal for general construction applications. Acrylic-impregnated foam is better suited for applications requiring enhanced UV resistance.
Q: Can Biyseal foam be used in standing water applications?
A: Yes, when compressed by 75%, Biyseal can resist standing water. Ensure proper compression to achieve the desired level of water resistance.
Q: How long can Biyseal foam last in outdoor applications?
A: Accelerated aging tests indicate a working life of up to 20 years, depending on the application and environmental conditions. Proper installation and maintenance are crucial for longevity.
Q: Does Biyseal foam require any specific tools for installation?
A: Basic tools like a measuring tape and a utility knife or scissors are sufficient for cutting the foam to the required size. No specialized tools are needed for installation.
Use Biyseal Polyurethane Impregnated Foam for:
- Weatherproofing metal wall and roof cladding.
- Sealing vertical expansion joints in precast concrete, brick, and block work.
- Jointing between walls and windows.
- Sealing various roof and wall decking profiles.
- Joint sealing of logs in timber homes.
Why Use Biyseal Polyurethane Impregnated Foam:
- Provides a durable and long-lasting weather seal, reducing maintenance and repair costs.
- Adapts to dynamic joint movements, preventing leaks and damage in expansion joints.
- Offers versatile application options with bitumen and acrylic impregnated versions.
- Easy to install with basic tools, saving time and labor on site.
- Maintains performance over time with excellent recovery and compression resistance.
How to apply Biyseal Polyurethane Impregnated Foam:
- Measure the joint opening to determine the required foam width based on the application (weather resistance, expansion joint, or joint proofing).
- Cut the Biyseal foam to the required length using a utility knife or scissors.
- Insert the foam into the joint, ensuring it is compressed to the appropriate level for the desired sealing effect.
- For profiled applications like roofing, use the pre-profiled Biyseal foam to match the roof decking.
Biyseal Polyurethane Impregnated Foam limitations:
- Performance depends on correct compression; insufficient compression may result in inadequate sealing.
- Not suitable for applications requiring strong adhesive bonding; relies primarily on compression for sealing.
- Specific chemical resistance data is not provided, so avoid exposure to harsh chemicals without prior testing.
Safety precautions when using Biyseal Polyurethane Impregnated Foam:
- Personal Protective Equipment: Gloves are recommended to prevent skin irritation.
- Ventilation: General ventilation is adequate; no specific requirements are listed.
- Handling: Handle with care to avoid tearing or damaging the foam.
Biyseal Polyurethane Impregnated Foam can be used on the following substrates:
- Metal Cladding: Provides effective weatherproofing and dust proofing.
- Concrete and Masonry: Ideal for expansion joints and sealing gaps.
- Timber: Suitable for sealing joints in timber homes and structures.
Biyseal Bitumen Impregnated Foam Physical Properties
| Property | Value |
|---|---|
| Material | Polyurethane Foam Impregnated with Bitumen or Acrylic |
| Density (Bitumen Impregnated) | 30 kg/m³ |
| Density (Unimpregnated) | 96 kg/m³ |
| Identification Force Deflection (IFD) 25% | 200 ± 22 N |
| Identification Force Deflection (IFD) 65% | 360 ± 27 N |
| Resilience | Minimum 20% |
| Tensile Strength (Bitumen Impregnated) | Minimum 172 kPa |
| Tensile Strength (Unimpregnated) | 232 kPa |
| Elongation at Break (Bitumen Impregnated) | 200% |
| Elongation at Break (Unimpregnated) | 275% |
| Tear Strength (Bitumen Impregnated) | Minimum 0.52 kN/m |
| Tear Strength (Unimpregnated) | 903 N/m |
| Elongation After Heat Aging | 225% |
| Tear Resistance After Heat Aging | 869 N/m |
| Shrinkage | 0.94% |
| Cell Size | 55 ± 5 cells/inch |
| Compression Set | 5.0 |
| Combustibility | Flame did not reach benchmark |
| Recovery | 98% in the first cycle |
| Compression Resistance (20%) | Dust, draughts, vibration |
| Compression Resistance (50%) | Fog, light dampness, slight flowing water, reverberation |
| Compression Resistance (70%) | Flowing water, dust storms |
| Compression Resistance (75%) | Standing water |
| Working Life (Accelerated Aging) | Up to 20 years (application dependent) |
| Sizes | 19mm x 13mm to 75mm x 25mm x 2m |
| Profiles | Corrugated and Trimdek roofing profiles (2m length) |
| Standards Compliance | AS2282-79 |
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