Demsun P34 Fire Rated Gun Foam 750ml - B1 High Fire Resistance & Acoustic

Product Name

Demsun P34 Fire Rated Gun Foam 750ml – B1 High Fire Resistance & Acoustic

Overview

Demsun P34 is a premium B1-class fire rated gun foam developed for professional contractors working on high-risk sealing and fire-stopping applications. Designed to deliver extended fire resistance of up to 235 minutes in tested configurations, it forms an efficient barrier against the spread of fire, smoke, and toxic gases through linear joints, penetrations, and cavities. The high-yield formulation provides excellent thermal and acoustic insulation while maintaining strong adhesion to common construction substrates such as brick, concrete, plaster, and timber. Gun-grade application ensures precise control, deep penetration, and consistent results across large-scale commercial, residential, and infrastructure projects where fire performance and reliability are critical.

Key Features & Benefits

• B1 fire classification provides superior fire resistance compared to standard foams.
• Up to 235 minutes fire performance when tested to EN 1366-4.
• Creates an effective smoke and gas seal in critical joints.
• High thermal and acoustic insulation reduces heat loss and sound transfer.
• Gun-grade application allows precise dosing and reduced waste.
• High yield output up to 45 litres improves cost efficiency on large jobs.
• Can be cut, trimmed, and painted after curing with no shrinkage.

Installation & Applications

Suitable for fire-rated sealing around door and window frames, service penetrations, cable and pipe routes, partition walls, roof constructions, and general cavity filling. Designed for use with standard applicator guns to achieve controlled expansion and reliable fire-stopping performance.

Who Is This For?

• Fire-stopping and passive fire protection contractors.
• Commercial and residential construction teams.
• Electrical and mechanical installation specialists.
• Site managers specifying fire-rated sealing systems.

Competitive Advantages

Demsun P34 combines extended fire resistance, high yield, and gun-grade control in one product, reducing the need for multiple sealing solutions while improving compliance and on-site efficiency.

Why CMT Group?

CMT Group supplies fire-rated sealing and insulation products with industry-leading delivery speed and procurement transparency. Our service is built around live construction sites where compliance, reliability, and timing are critical.

• Next-day delivery on all in-stock fire protection products.
• VIP same-day delivery available on selected lines.
• Own UK fleet covering the majority of active sites.
• Specification-driven listings to support compliance decisions.
• Trade pricing and bulk supply for multi-site projects.

Frequently Asked Questions

What fire classification does this foam achieve?
Demsun P34 is classified as B1 to DIN 4102, offering low flammability and enhanced fire resistance.

How long is the fire resistance?
It can provide up to 235 minutes of fire resistance when installed in tested configurations.

Is this foam suitable for acoustic insulation?
Yes. It delivers high acoustic performance, helping reduce sound transmission.

Can it be trimmed and painted?
Yes. Once cured, it can be cut, trimmed, and painted with no shrinkage.

Specifications Table

Product Type	Fire rated gun-grade PU foam
Fire Classification	DIN 4102-B1
Fire Test Standard	EN 1366-4 (up to 235 minutes)
Can Size	750ml
Yield	Up to 45 litres