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Use Biyseal Acrylic Impregnated Foam for:
Sealing expansion joints, polycarbonate sheets, and cladding against dust, moisture, vibration, and weather.
Biyseal Acrylic Impregnated Foam is a high-performance, acrylic-solution infused polyurethane foam designed to deliver a long-lasting seal against dirt, dust, moisture, vibration, and water ingress. Its closed-cell construction compresses to seal tight and recovers quickly, making it ideal for dynamic joints and surfaces prone to movement or vibration.
Product Details: This foam is engineered for use in exterior and interior building applications where traditional sealants may be insufficient. It maintains elasticity even after repeated compression, ensuring long-term performance in cladding, expansion joints, and industrial builds.
Compression & Sealing Capacity: The foam becomes increasingly impermeable as it's compressed. At 25% compression it blocks air and dust, at 50% it seals out moisture, and at 75% it resists heavy water exposure—ideal for sealing against rain and weather extremes.
Thermal Performance: With a service range from -10°C to +70°C, this foam maintains its sealing ability from cold southern climates to the hot, dry interiors of Australia. Perfect for caravans, railways, or industrial sites exposed to the elements.
Available Size: We currently supply this product in 25mm x 25mm dimensions, in 2 metre lengths, with 10 lengths per pack (20 metres total).
For other sizes, please contact us.
Key Features of Biyseal Acrylic Impregnated Foam & What They Mean For You
- High Recovery Foam: Recovers more than 90% of its original thickness after compression—ideal for joints that experience movement or vibration.
- Progressive Sealing Performance: Provides reliable sealing across different compression levels for various moisture and air control requirements.
- Wide Service Temperature Range: Performs reliably from -10°C to +70°C, making it suitable for most Australian environments.
- Paint Compatibility: Easily paintable with water-based paints for seamless finish in architectural applications.
Why Choose Biyseal Acrylic Impregnated Foam:
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Problem: Joints prone to movement and water ingress?
Solution with Biyseal: Foam expands and contracts with the joint, maintaining an effective seal and preventing water and dust entry. -
Problem: Need quick and easy sealing without mess?
Solution with Biyseal: Simply press into place with hand or roller—no curing time or cleanup required. -
Problem: Looking for a flexible seal in exposed locations?
Solution with Biyseal: Acrylic-impregnated formula withstands UV and weather exposure, ideal for roofing and cladding.
Frequently Asked Questions About Biyseal Acrylic Impregnated Foam
Q: Can I use Biyseal Foam in vertical joints?
A: Yes. Biyseal Acrylic Foam holds position well even when used vertically. Apply pressure evenly along the joint using a roller or hand for proper adhesion before expansion.
Q: Is Biyseal weatherproof once installed?
A: Absolutely. At 75% compression, Biyseal effectively seals out rain and water. It’s a trusted option for roofing, cladding, and exposed exterior joints.
Q: Can I paint over Biyseal Foam?
A: Yes, Biyseal is compatible with water-based paints and mastics, making it easy to blend into architectural finishes.
Q: What surface prep is needed before applying Biyseal?
A: Surfaces should be clean, dry, and free of grease, dust, or oil. For best results, wipe down with a cloth and ensure tight dimension matching before installation.
Q: Is this suitable for vehicle or caravan construction?
A: Yes. Biyseal is frequently used in RVs, motorhomes, and rail carriages for sealing joints subject to vibration and exposure.
Step-by-Step Application Guide for Biyseal Acrylic Impregnated Foam:
- Clean Surfaces: Ensure all joint faces are clean and free from oil, dust, or debris. Use isopropyl wipes if necessary.
- Select Correct Width: Choose the foam dimension appropriate to the joint gap and desired compression. Aim for 50–75% compression for moisture protection.
- Apply to Joint: Press foam into the joint manually or with a roller. Ensure it is compressed evenly throughout the length.
- Join Multiple Lengths: Splice strip ends with a wet knife at an angle to form a continuous seal.
- Let it Expand: Foam will begin expanding to seal the joint within minutes. Final expansion may take a few hours depending on ambient conditions.
- Optional Finishing: Once expanded, the foam can be painted or trimmed as needed.
Important Limitations & Safety When Using Biyseal Acrylic Impregnated Foam:
Product Limitations:
- Not suitable for continuous underwater use: For full immersion applications, consider Adheseal WetGrab or MarinePro sealants.
- Not intended as a structural gap filler: Biyseal is for environmental sealing, not bearing load or structural reinforcement.
- May not bond well to oily or highly textured substrates: Always clean and test first if using with recycled or painted surfaces.
Safety First – Protecting Yourself and Your Workspace:
- PPE: Wear gloves and safety glasses during installation to avoid skin or eye contact with adhesive residue.
- Ventilation: Use in well-ventilated areas if applying near mastics or other volatile adhesives.
- Handling: Avoid storing in dusty or humid environments. Reseal opened packs immediately to retain product performance.
- First Aid: In case of contact with eyes, flush thoroughly with water. Seek medical help if irritation persists. Refer to SDS for more info.
Biyseal Acrylic Impregnated Foam Adhesion Profile – Compatible Substrates:
- Concrete & Brickwork: Ideal for expansion joints and façade gaps. Ensure joints are clean before installation.
- Timber: Use for window and door perimeter sealing against air and water ingress.
- Metal Roofing & Cladding: Perfect for sealing under corrugated or custom orb sheets with pressure fit.
- Polycarbonate Sheets: Commonly used as back channel foam to prevent dust or water entry in greenhouse or patio installations.
- Precast Panels: Excellent sealing option where rigid sealants fail due to panel movement.
- Electrical Boxes & Weatherproof Panels: Seals cable entry and weatherproof casings from dirt and splash.
- Vehicle Bodies: Suitable for caravan, trailer, and truck applications to dampen vibration and seal joints.
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