Bradford Enviroduct - Insulation Industries

Step C.Specify the minimum recommended Bradford products to meet the BCA duct work requirements from the table below.Recommended minimum insulationBCA minimumtotal R-ValueMinimum recommended Bradford Enviroduct insulation productExternal Ductwrap R Internal Ductliner R Flexible duct RR0.6 Multitel 25mm 0.7 Supertel 25mm 0.8 R1.0 Specitel 40mm 1.0R0.9 Multitel 38mm 1.0 Supertel 38mm 1.1 R1.0 Specitel 40mm 1.0R1.0 Multitel 38mm 1.0 Supertel 38mm 1.1 R1.0 Specitel 40mm 1.0R1.3 Multitel 50mm 1.3 Supertel 50mm 1.5 R1.5 Specitel 60mm 1.5R1.5 Multitel 55mm 1.5 Supertel 50mm/Multitel 55 1.5 R1.5 Specitel 60mm 1.5R1.8 Multitel 75mm 2.0 Supertel 75mm 2.2 R1.8 Building Blanket 80mm 1.8R2.0 Multitel 75mm 2.0 Supertel 75mm 2.2 R2.3 Building Blanket 100mm 2.3The total ducted system may deliver around R0.2 above thebulk insulation R-Value due to the contribution of reflectiveair spaces and surface air films. This figure will vary frominstallation to installation based on:• the emissivity of the external surface (foil facing orgalvanised sheeting)• the presence and size of an air gap around the duct• the ventilation rates in the plenum or the externallocation (return air systems, for example, will typically be

R-Values of pipe insulation optionsInsulation thickness25mm 38mm 50mm 75mmGlasswool SPI R0.8 R1.2 R1.5 R2.3Polystyrene SL R0.6 R0.9 R1.29mm 13mm 19mm 25mmArmacell R0.2 R0.3 R0.5 R0.6INTERNAL DUCTLINERSR-rated ductlinerDucts are primarily insulated internally for noiseabsorption. Internal insulation is usually more costeffective than noise control via additional silencers orattenuators.In addition to noise absorption, internal insulationwill assist in compliance with the BCA insulationprovisions. If there is no internal insulation then theduct must be lagged externally to comply with theBCA and achieve the required energy savings.Indoor Air QualityOverseas testing has shown the use of glasswoolductliners does not contribute any detectible increasein airborne particles in room spaces. There is noOH&S or environmental advantage to lining ductswith polyester or polyethylene insulation. Howeverduct cleanability is an important issue.Bradford Insulation’s Enviroduct range will notsupport bacterial growth. In addition Bradford canalso provide the latest USA and European productsolutions with anti-fungal and anti-bacterial coatingsfor maximum Indoor Air Quality (IAQ).All Bradford Glasswool and Rockwool HVACproducts are made with FBS-1 Biosoluble fibres.They are safe to install and use for the life of theairconditiong system and provide excellent fireresistant properties.Bradford Supertel DuctlinerFor economical performance, Bradford Supertelprovides the perfect combination of thermal andacoustic insulation to meet all your ductlining needs.It is available in a full range of R-Values to meet theBCA requirements.Bradford Ultratel DuctlinerThe extra density of Bradford Ultratel furtherenhances the thermal and acoustic performance toprovide a premium solution. Ultratel 25mm andUltratel 50mm are recommended.Bradford FibertexBradford Fibertex Rockwool Ductliners offer a totallynon-combustible (AS1530.1) industrial gradeductliner when combined with Ultraphon facing.Ideal for high temperature applications.5

Sound Absorption Sound Absorption (AS1045:1988) Frequency (Hz)ProductThickness(mm)125 250 500 1000 2000 4000 5000 NRCSupertel 25mm R0.8 Ductliner• Thermofoil HD Perf 25 0.12 0.28 0.68 0.94 1.09 0.85 0.75 0.75• BMF 25 0.07 0.26 0.65 0.93 1.04 1.03 1.00 0.72• Acoustituff 25 0.14 0.45 0.99 0.97 0.55 0.29 0.25 0.75• Ultraphon 25 0.10 0.39 0.79 1.00 1.05 1.00 0.95 0.81Supertel 38mm R1.1 Ductliner• Thermofoil HD perf 38 0.13 0.43 0.89 1.02 0.89 0.82 0.82 0.80• Ultraphon 38 0.14 0.45 0.96 1.00 0.96 0.93 0.94 0.85• Acoustituff 38 0.28 0.53 1.08 0.88 0.47 0.25 0.19 0.75Supertel 50mm R1.5 Ductliner• Thermofoil HD Perf 50 0.23 0.71 0.99 1.09 0.97 0.78 0.59 0.94• BMF 50 0.24 0.62 1.00 1.07 1.12 1.15 1.17 0.95• HD Perf & Microfilm 50 0.32 1.14 0.94 0.48 0.22 0.06 0.03 0.70• Acoustituff 50 0.33 1.01 1.17 0.99 0.64 0.34 0.28 0.95• Ultraphon 50 0.30 1.01 1.31 1.20 1.05 0.97 0.95 1.14Supertel 75mm R2.2 Ductliner• Thermofoil HD Perf 75 0.52 1.02 1.15 1.07 1.02 0.90 0.83 1.06Ultratel 25mm R0.8 Premium Ductliner• Thermofoil HD Perf 25 0.12 0.31 0.81 1.09 1.09 0.91 0.89 0.83• BMF 25 0.08 0.30 0.71 0.99 1.07 1.08 1.16 0.77• Acoustituff 25 0.05 0.55 0.65 0.90 0.70 0.50 0.50 0.70Ultratel 50mm R1.5 Premium Ductliner• BMF 50 0.25 0.70 1.13 1.13 1.12 1.12 1.12 1.01• Acoustituff 50 0.30 0.75 0.90 0.85 0.65 0.50 0.60 0.79Ultratel 75mm R2.3 Premium Ductliner• Thermofoil HD Perf 75 0.69 1.19 1.15 1.09 1.03 0.92 0.90 1.12Fibertex Rockwool 25mm R0.7 Non-Combustible R4 Ductliner• Thermofoil HD Perf 25 0.14 0.38 0.87 1.07 1.06 0.90 0.79 0.85• BMF 25 0.15 0.33 0.74 0.94 1.03 1.04 0.98 0.76Fibertex Rockwool 50mm R1.5 Non-Combustible R4 Ductliner• Thermofoil HD Perf 50 0.31 0.83 1.16 0.99 0.90 0.78 0.73 0.97• BMF 50 0.36 0.76 1.19 1.09 1.03 1.04 0.90 1.01R1.5 Supertel DuctlinerHD PerfBMFHD Perf + 23 Micron MicrofilmAcoustituffUltraphon* Noise Reduction Coefficient NRC = Arithmetic mean ofabsorption coefficients at frequencies 250Hz,500Hz,1000Hz and2000Hz.Note: More comprehensive data for the HVAC specialistincluding Static Insertion Loss AS1277:1983 is available inthe Bradford Insulation Air Conditioning Design Guide orfrom our website www.bradfordinsulation.com.au7