DEMSUN P34 - Fire B1 Gun Foam - 750 ml
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Product Information
Full details
The DEMSUN P34 Fire B1 Gun Foam is an essential tool for professional contractors and builders requiring high-performance gap filling and sealing in fire-rated assemblies. This single-component, moisture-curing polyurethane foam offers superior insulation properties and exceptional fire resistance, making it ideal for window frames, door frames, and wall penetrations. While it provides excellent adhesion and durability, users should note that it requires a professional-grade applicator gun for precise control and application.
All features
| Model Part Number | P34 |
|---|---|
| Brand | DEMSUN |
Extended Product Information
FAQs
Does this foam work on all surfaces?
It adheres well to most building materials like brick and wood, but it will not bond to polyethylene, silicone, or PTFE (Teflon).
Can I use the P34 foam outdoors?
Yes, it is suitable for outdoor use, but the cured foam should be painted or sealed to protect it from UV radiation, which can cause degradation over time.
How long does it take to fully cure?
The foam is typically tack-free within 10 minutes and reaches a full, load-bearing cure in approximately 24 hours depending on temperature and humidity.
What is the fire rating duration?
The foam can achieve up to 235 minutes of fire resistance, though this is dependent on the specific configuration and local testing certifications.
How do I remove excess foam?
Fresh foam can be removed with PU foam cleaner or acetone. Once the foam has cured, it can only be removed through mechanical means like cutting or sanding.
Troubleshooting
Foam does not expand properly
Ensure the substrate is slightly misted with water, as the foam requires moisture to trigger and sustain the expansion process.
Applicator gun is clogged
Use a professional PU foam cleaner through the gun adapter. If the foam has fully cured inside the barrel, the gun may need to be disassembled or replaced.
Foam is running or dripping
The canister may be too cold or the ambient temperature is too low. Allow the canister to reach room temperature before application.
Pros and Cons
Pros
- Excellent fire-retardant properties for safety-critical installations
- Easy to use with standard professional PU foam applicator guns
- Superior thermal and acoustic insulation capabilities
- Strong adhesion to most building materials including wood, concrete, and metal
- Environmentally conscious propellant selection
Cons
- Requires a separate applicator gun which must be cleaned immediately after use
- Not suitable for use in spaces with zero humidity due to moisture-curing nature
- Cannot be removed easily once cured; requires mechanical removal
- Requires proper protective gear to prevent skin and eye contact
Setup, Compatibility & Care
To begin, ensure the canister is at room temperature. Shake the canister vigorously for at least 30 seconds before attaching it to the foam applicator gun. Screw the gun onto the canister valve firmly but do not overtighten.
Compatibility
- Compatible with most construction materials: brick, concrete, plaster, wood, and metal.
- Should not be used on polyethylene, silicone, or Teflon surfaces.
Care and Maintenance
- If the gun is to be stored, ensure the canister remains attached to keep the internal valve pressurized and prevent curing inside the mechanism.
- If removing the canister, immediately flush the gun with a dedicated PU foam cleaner to prevent permanent blockage.
- Store in an upright position in a cool, dry area away from direct sunlight.