Fire Retardant Duct Foam / Pyrosorb Foam

Fire Retardant Duct Foam / Pyrosorb Foam
Product Code: F110 to F140
Thickness Options: 25mm as standard. Custom thickness from 6mm to 50mm on request.
Availability: In Stock
Download Description: For Registered Users Only
Price: £27.28

Available Options

* Duct Foam / Pyrosorb Foam:

This product has a maximum quantity of 1000

Fire Retardant Duct Foam

Our Fire Retardant Acoustic Duct Foam is used for internal and external duct linings, thermal / acoustic machine coverings and suspended ceiling absorptive panels. It can also be used as part of composites combined with acoustic barrier materials. It is extremely versatile and highly adaptive. Also refered to as PUNF Foam, FR Foam, Pyrosorb Foam, Barofoam / Fireseal Foam Baro Foam.

This material is a fire retardent modified polyurethane acoustic foam designed to meet the stringent requirements of British Building Regulations. As well as being fireproof it is also CFC and HCFC free. Supplied with an adhesive backing this product is clean and easy to apply.

Generally supplied in 12mm and 25mm thicknesses although any thickness from 6mm–100mm can be cut subject to minimum order quantities.

Technical Specifications
Colour Black
Size 1000x1200mm
12mm plain Part Code F110
12mm self-adhesive Part Code F120
25mm plain Part Code F130
25mm self-adhesive Part Code F140
Density non 80-90 kg.m3
Tensile Strength 88kps
Indentation Hardness 156N
Elongation at Break 188% minimum (unaged)
Thermal Conductivity 0.052 W/mk
Temp. Range -30o to +110oC


Absorption Coefficients
Material / Hz 125 250 500 1K 2K 4K NRC
6mm 0.03 0.06 0.12 0.18 0.23 0.31 0.15
12mm 0.05 0.15 0.20 0.35 0.40 0.45 0.30
25mm 0.10 0.20 0.35 0.55 0.65 0.70 0.45
50mm 0.25 0.45 0.70 0.85 0.85 1.00 0.70


Ductwork Attenuation (dB/m) - Airborne Noise
Material Duct Size 125 250 500 1K 2K 4K
12mm 900x600mm 0.2 0.6 1.7 3.7 5.3 4.5
25mm 900x600mm 0.2 0.8 2.9 10.8 6.9 7.2
50mm 900x600mm 0.8 2.9 7.2 11.0 7.1 6.2
25mm 450x600mm 0.4 1.0 3.3 14.1 8.3 8.9
50mm 450x600mm 1.6 3.1 8.7 16.6 8.3 8.6
25mm 300x600mm 0.6 1.4 3.8 15.1 12.0 11.4
50mm 300x600mm 2.6 5.4 10.5 19.5 15.1 11.6


Ductwork Attenuation (dB/m) - Breakout Noise
Material Duct Size 125 250 500 1K 2K 4K
12mm 900x600mm 2.9 5.1 8.8 4.2 7.2 13.0


FMVS3002 Zero burn rate, self-extinguishing
BS476 Part 6 & 7 Class 0
CAA8/FAA Pass all grades
UL94 Pass Rating 94-V-0
PSA/FR3 Passes Source 5
ASTM 1692 1975 Resists ignition

 absorption coefficient of duct foam acoustic foam


Specialist Foam Facings for Improved LF Absorption

We have developed a number of specialist facings with particular foams for improved low-frequency absorption which is often required when dealing with industrial noise issues, machine enclosures and fan casings etc. We have managed to achieve 50% efficiency as low as 125Hz and 100% efficiency from 200Hz upwards. The acoustic test data is shown on the right but it is a good idea to discuss your requirements with our technical team.


Facing options
FGA.BK Black or white weavelocked glass cloth
FPG.WH White polyurethane coated glass cloth
FPF.BK Black or white polyurethane film
FPPD Perforated black/white or grey PVC facing
FAG Aluminium foil laminated to glass fibre fabric
FOF Reinforced aluminium foil
FMP Metalised polyester film
FMP.SC Metalised polyester film with scrim
FVT.BK Black viscose tissue
SB Spray applied black/white or grey PVC
All the above also available with a self adhesive peel off backing (SA)


acoustic absorption of special facings on various acoustic foams

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