Full details
The Polycell Expanding Foam - White is an essential solution for homeowners and professionals seeking to effectively fill and seal awkward gaps, hollows, and cavities. Its key benefit lies in its ability to shoot liquid foam deep into spaces, expanding to create a long-lasting, insulating barrier against heat, sound, and moisture. While highly versatile and easy to finish, careful surface preparation and application are crucial for optimal results.
All features
| Colour | White |
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| Model Part Number | 5084932 |
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| Brand | Polycell |
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Extended Product Information
FAQs
How long does Polycell Expanding Foam take to cure?
The foam is typically touch-dry in 10-15 minutes and can be cut or trimmed after approximately 1 hour, depending on temperature and humidity conditions. Full cure can take between 12 and 24 hours.
Can I use this foam outdoors?
Yes, Polycell Expanding Foam is formulated for suitability in both interior and exterior applications. For outdoor use, ensure the area is protected from heavy rain or extreme weather during the initial curing period.
How do I clean up uncured foam?
Uncured foam can be effectively cleaned using acetone or a dedicated expanding foam cleaner. Once the foam has cured, it can only be removed mechanically by scraping, cutting, or sanding.
Can the cured foam be painted, filled, or plastered?
Yes, once the foam is fully cured and has been trimmed or sanded to the desired shape, it provides an excellent surface that can be painted, filled with other materials, or plastered over to seamlessly blend with surrounding finishes.
What is the coverage of one 500ml can?
Info needed: Coverage depends significantly on the size of the gap being filled and the application technique. A 500ml can of expanding foam undergoes considerable expansion, typically filling a volume many times its initial liquid state. It is advisable to estimate the volume of your gaps.
Is the foam waterproof once cured?
Once fully cured, Polycell Expanding Foam creates a durable, long-lasting, and water-resistant seal that insulates effectively against moisture. It is not designed for applications involving continuous water immersion.
Does this product contain CFCs?
No, this Polycell Expanding Foam product utilizes a CFC-free propellant, aligning with environmental considerations.
Troubleshooting
Foam doesn't expand or cures slowly.
Ensure the can is well-shaken (at least 20 seconds) and at room temperature (around 20°C). Colder temperatures can significantly slow curing and expansion. Also, ensure the nozzle is clear and not blocked.
Messy application or unwanted foam spills.
Wear protective gloves and eye protection. Have acetone cleaner or proprietary foam cleaner readily available for immediate cleanup of uncured foam. Allow cured foam to dry before attempting to trim it with a sharp knife.
Foam doesn't adhere properly to surfaces.
Ensure surfaces are thoroughly clean, dry, and free from dust, grease, or loose material. Lightly dampening porous surfaces can sometimes improve adhesion, but avoid applying to wet or excessively damp areas.
Over-expansion or difficulty controlling foam output.
Apply in stages if filling very large cavities, allowing partial curing between layers. Practice on a scrap surface to gauge the expansion rate and control the flow. Excess cured foam can be trimmed with a sharp utility knife once fully hardened.
Pros and Cons
Pros
- Excellent for filling and sealing awkward, irregular gaps
- Provides effective insulation against heat, sound, and moisture
- Cured foam is easy to trim, sand, and decorate (paint, fill, plaster)
- Suitable for both indoor and outdoor applications
- Contains CFC-free propellant for environmental consideration
Cons
- Requires careful application to avoid mess and unwanted expansion
- Surfaces must be clean for optimal adhesion
- Needs trimming and finishing after curing to achieve a smooth surface
- Can over-expand if not properly managed, potentially distorting surrounding materials
Setup Ensure the surfaces where the foam will be applied are clean, dry, and free from dust, grease, loose paint, or other debris. For best results and improved adhesion, lightly dampen porous surfaces like brick or concrete with water before application, but avoid excessive wetness. Shake the can vigorously for at least 20 seconds before use to ensure proper mixing of components. ## Compatibility Polycell Expanding Foam is suitable for use on most common building materials, including concrete, brick, wood, metal, plaster, and plastics. It is designed for both interior and exterior applications. ## Care Wear appropriate personal protective equipment, including gloves and eye protection, during application. Any uncured foam spills should be cleaned immediately with acetone or a specialist foam cleaner. Once cured, foam can only be removed mechanically. Store the can upright in a cool, dry place away from direct sunlight and sources of ignition. Ensure the nozzle is clean and clear if the can is to be reused.