11
Use Biyseal Acrylic Impregnated Foam for: Cost-effective joint sealing against air, dust, moisture and heavy rain in cladding, precast, glazing, and expansion joints
Biyseal Acrylic Impregnated Foam is a high-density polyurethane foam strip impregnated with a specialised acrylic solution, engineered to deliver durable, flexible sealing across a wide range of construction and industrial applications. Whether you're working with precast concrete, polycarbonate sheeting, or timber frames, its unique compression-based sealing system adapts perfectly to joint movement and environmental stresses. From dusty mine roads to torrential coastal rain, this product keeps your installations protected and professional.
Product Details: As a flexible impregnated foam joint seal, this product is built for dynamic environments—making it indispensable across commercial, civil, and residential applications where flexibility, durability, and fast installation matter.
Compression Performance: Designed to perform at varying levels of joint movement and environmental stress: 25% compression is effective against dust and vibration, 50% holds back general moisture, and at 75% it forms a weather-tight seal—even under heavy rain. Ideal for window reveals, back channels, and caravan construction where waterproofing and thermal movement coexist.
Elastic Recovery: Capable of compressing to 10% of its width and rebounding over 90% after repeated cycles, Biyseal Acrylic offers outstanding resilience for expansion joints and long-term installations—minimising maintenance and rework over time.
Application Temperature Range: Performs reliably from –10°C to +70°C, giving you confidence in hot, dry summers in WA or cool, damp mornings in southern Tasmania. No seasonal performance drop-off.
Additional Product Details:
Available Sizes & Lengths:
Offered in a range of popular trade dimensions (20mm to 50mm width) with strip lengths between 2 to 3.6 metres. Custom Orb and bespoke dimensions available on request—ideal for unique cavity designs or retrofit repairs.
Installation System & Compatibility:
Installs by simple hand or roller compression. Compatible with common sealants and water-based paints, allowing overcoating or integration into hybrid sealing systems without performance compromise.
Key Features of Biyseal Acrylic Impregnated Foam & What They Mean For You
- Variable Compression Performance: Choose your sealing power—air, dust, moisture, or rain—just by adjusting the level of compression. This lets you meet varying performance needs with a single product, reducing inventory complexity.
- Over 90% Elastic Recovery: Withstands repeated joint movement without degradation, making it ideal for use in precast and modular structures subject to vibration, traffic, or seasonal thermal shifts.
- Temperature Resistant (–10°C to +70°C): Performs across harsh Australian environments without cracking, hardening, or losing flexibility—ensuring seal integrity year-round.
- Paint & Mastic Compatible: Works seamlessly with water-based paints and joint mastics, making it easy to integrate into existing trade systems without performance risk.
Why Choose Biyseal Acrylic Impregnated Foam:
-
Problem: Traditional foams lose rebound or seal capacity after movement?
Solution with Biyseal: Maintains over 90% recovery, so joints stay sealed long-term, even in areas with thermal cycling or vibration like rail or HVAC installations. -
Problem: Need a weatherproof seal without messy wet products?
Solution with Biyseal: Clean, dry, no-curing install method using hand pressure or roller. Fast sealing with no odour, dripping, or tooling. -
Problem: Confusion over joint seal size matching?
Solution with Biyseal: Multiple foam widths available to suit different joint sizes. Reliable expansion ensures joint is filled correctly even if surface dimensions vary slightly.
When to Choose Biyseal Acrylic Impregnated Foam Over Other Options:
- Choose Biyseal over liquid-applied sealants when you want a fast, clean install with no cure time, especially on vertical or overhead surfaces.
- Choose Biyseal over closed-cell foams when you require flexibility, elasticity, or a long-lasting seal in movement-prone joints or where rain penetration is a concern.
- Biyseal is particularly effective for: Expansion joints in precast, polycarbonate roof cladding, caravan and RV assembly, and industrial HVAC enclosures.
- Consider other Adheseal solutions when: Underwater immersion is required, or where chemical exposure is significant—refer to Adheseal Butyl Tape or WetGrab for those scenarios.
Trade-Specific Applications & Pro Tips for Biyseal Acrylic Impregnated Foam:
For Builders and Cladding Installers:
-
Application Focus: Weather sealing roof sheeting and back channel polycarbonate
- Micro-Guide: Cut to length, compress with roller into channel before fastener installation.
- Material Compatibility Notes: Excellent adhesion to steel, aluminium, timber, and poly sheeting.
- Performance Benefits: Seals out wind-driven rain and dust without displacing under fastener torque.
- Pro Tip: Use 75% compression to achieve full waterproofing seal in roof valleys.
- Common Pitfall to Avoid: Overcutting—foam should be slightly longer than the joint to maintain compression.
For Precast and Civil Trades:
-
Application Focus: Sealing expansion joints in concrete panels
- Micro-Guide: Install during panel placement or before caulking stage. Use wet knife for seamless strip joins.
- Material Compatibility Notes: Compatible with concrete, brick, and render.
- Performance Benefits: Accommodates panel movement and resists water ingress, reducing risk of spalling or corrosion.
- Pro Tip: Slight recess of foam allows overlay caulking if needed without compromising primary seal.
- Common Pitfall to Avoid: Installing when joint is wet or dirty—may cause expansion delay or reduced adhesion.
Frequently Asked Questions About Biyseal Acrylic Impregnated Foam
Q: Can I use Biyseal Acrylic to seal joints exposed to direct rain?
A: Yes. When compressed to 75% of its original width, Biyseal Acrylic effectively seals against heavy rain and water ingress. It's ideal for exposed cladding gaps, expansion joints, or polycarbonate roofing installations.
Q: Is it suitable for sealing dynamic joints like precast panel gaps?
A: Absolutely. With over 90% elastic recovery, Biyseal Acrylic is engineered for dynamic movement, making it ideal for precast concrete joints and modular building interfaces.
Q: Can I paint over Biyseal Acrylic?
A: Yes, it is compatible with water-based paints. Ensure the foam has expanded and is dry before painting to ensure proper adhesion and finish.
Q: How do I join two strips together?
A: Use a wet knife to splice the ends on an angle and butt them together. This ensures a continuous, tight seal along the joint line without gaps.
Q: Will it lose performance in hot or cold weather?
A: No. Biyseal Acrylic functions reliably between –10°C and +70°C, maintaining sealing performance and flexibility across most Australian environments.
Applications Where Biyseal Acrylic Impregnated Foam Excels:
- Expansion joints in precast concrete panels: Maintains flexibility and water resistance, even during seasonal thermal movement or seismic shifts.
- Back channel foam for polycarbonate roofing: Fills channels and blocks rain, insects, and dust without mess or tools.
- Window and door perimeter sealing: Prevents drafts and water leaks, enhancing thermal efficiency and comfort.
- Vehicle, caravan, or trailer assembly: Provides a vibration-resistant and waterproof seal that can endure on-road movement and temperature extremes.
- Electrical and HVAC cabinets: Forms a reliable gasket seal against weather and dirt ingress, improving performance and safety.
Top Benefits of Using Biyseal Acrylic Impregnated Foam on Your Projects:
- Highly Durable & Long-Lasting: Acrylic-impregnated foam resists ageing, UV, and water—ideal for long-life installs.
- Fast & Easy Application: No gunning, no tooling, no curing. Apply it and move on—perfect for tight schedules.
- Adaptable for Multiple Trades: One product for HVAC, glazing, cladding, vehicle bodywork, and concrete—streamlines your inventory and training.
Step-by-Step Application Guide for Biyseal Acrylic Impregnated Foam:
- Preparation is Paramount: Ensure joint or surface is clean, dry, and free from oil, grease, or dust. For porous surfaces like concrete, brushing or vacuuming may be required. Avoid installing when surfaces are damp.
- Nozzle & Gun Setup: Not required. Biyseal comes as pre-cut strips. Select the correct width for your joint and trim length with a sharp knife or scissors.
- Application Technique: Compress foam manually or with a roller into the joint. Ensure continuous pressure and avoid gaps. Biyseal will self-expand slightly to fill voids.
- Tooling for a Professional Finish: Use a damp knife to compress ends or shape corners. For neat termination, cut at a 45° angle and butt splice with slight overlap if needed.
- Clean-Up: No solvents required. Simply wipe tools clean or discard offcuts. Biyseal has no odour or tack.
- Curing Process: No curing time required. The foam provides immediate sealing performance once installed at proper compression level.
Important Limitations & Safety When Using Biyseal Acrylic Impregnated Foam:
Product Limitations:
- Not suitable for submerged or underwater use: Use Adheseal WetGrab for continuous immersion conditions.
- May not adhere well to oily or greasy substrates: Always clean surfaces thoroughly before applying foam to ensure expansion and grip.
Safety First – Protecting Yourself and Your Workspace:
- Personal Protective Equipment (PPE): Gloves are recommended to avoid minor skin irritation. No harmful vapours or solvents.
- Ventilation: No special ventilation needed. Safe fo
Biyseal Acrylic Impregnated Foam Adhesion Profile – Compatible Substrates:
- Concrete (Precast or Rendered): Ensure surfaces are dry and free of dust or laitance. Suitable for use between precast panels or wall junctions.
- Timber (Framing or Window Reveals): Compatible with most treated and untreated softwoods/hardwoods. Ideal for sealing around doors and windows.
- Polycarbonate Sheeting (Back Channels): Foam fits into U-channel profiles to create an effective weather and insect barrier.
- Metal Roofing and Cladding: Use between overlapping metal or Custom Orb profiles. Compress foam into place prior to fixing.
- Aluminium Frames or Flashings: Clean of any oxidation or grease. Biyseal compresses and expands to provide a flexible yet durable interface seal.
- Electrical Cabinets or HVAC Panels: Can be used to weatherproof access panels, junction boxes, or air-conditioning enclosures.
- Choosing a selection results in a full page refresh.