Slotted Duct Insulation (Phenolic) duct Insulation comprises a fibre-free rigid thermoset phenolic insulation core ,faced on one side (external face) with an aluminium vapour barrier foil, and faced on the other side (internal face) with a glass tissue based facing. ‘V’ grooves are machined into the panels to allow the product to effectively encase and insulate ductwork.
Custom Insulation is a premier manufacturer of Slotted Duct Insulation for ductwork. We cater to any dimensions, starting from 203mm, with all sections supplied in standard 1.2m lengths. Our Midlands-based design team is dedicated to delivering bespoke solutions with industry-leading turnaround times. Explore our offerings and get in touch for any unique requirements.
| Thickness (mm) | Dimensions (mm) |
|---|---|
| 25 | 2400 x 1200 |
| 30 | 2400 x 1200 |
| 35 | 2400 x 1200 |
| 40 | 2400 x 1200 |
| 50 | 2400 x 1200 |
| Temperature (°C) | Thermal Conductivity (mm) |
|---|---|
| -20 | 0.024 |
| 10 | 0.022 |
| 25 | 0.023 |
| 50 | 0.026 |
| 80 | 0.031 |
Minimum thickness (mm) of Phenolic Insulation for condensation control on ductwork carrying chilled air in ambient condition
Indoor still air temperature +25°C, relative humidity 80%, dewpoint temperature 21.3°C
| Minimum air temperature inside duct (°C) | Minimum thickness of insulating material (mm) | |||
|---|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | ||
| 15 | 20 | 20 | 20 | |
| 10 | 30 | 20 | 20 | |
| 5 | 50 | 25 | 20 | |
| 0 | 54 (30 + 25) | 30 | 20 | |
Minimum thickness (mm) of Phenolic Insulation for ductwork carrying warm air to control heatheat
| Air temperature 35°C; ambient temperature 15°C | |||
|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | Max permissible heat loss (W/m²) |
| 20 | 25 | 25 | 16.34 |
Minimum thickness (mm) of Phenolic Insulation for Chilled / dual purpose ductwork to control heat gain
| Air temperature 13°C; ambient temperature 25°C | |||
|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | Max permissible heat loss (W/m²) |
| 30 | 40 | 40 | -6.45 |
| Thickness (mm) | Dimensions (mm) |
|---|---|
| 25 | 2400 x 1200 |
| 30 | 2400 x 1200 |
| 35 | 2400 x 1200 |
| 40 | 2400 x 1200 |
| 50 | 2400 x 1200 |
| Temperature (°C) | Thermal Conductivity (mm) |
|---|---|
| -20 | 0.024 |
| 10 | 0.022 |
| 25 | 0.023 |
| 50 | 0.026 |
| 80 | 0.031 |
Minimum thickness (mm) of Phenolic Insulation for condensation control on ductwork carrying chilled air in ambient condition
Indoor still air temperature +25°C, relative humidity 80%, dewpoint temperature 21.3°C
| Minimum air temperature inside duct (°C) | Minimum thickness of insulating material (mm) | |||
|---|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | ||
| 15 | 20 | 20 | 20 | |
| 10 | 30 | 20 | 20 | |
| 5 | 50 | 25 | 20 | |
| 0 | 54 (30 + 25) | 30 | 20 | |
Minimum thickness (mm) of Phenolic Insulation for ductwork carrying warm air to control heatheat
| Air temperature 35°C; ambient temperature 15°C | |||
|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | Max permissible heat loss (W/m²) |
| 20 | 25 | 25 | 16.34 |
Minimum thickness (mm) of Phenolic Insulation for Chilled / dual purpose ductwork to control heat gain
| Air temperature 13°C; ambient temperature 25°C | |||
|---|---|---|---|
| Low emissivity: 0.05 (e.g. BCO Foil) | Medium emissivity: 0.44 (e.g. Dusty galvanised steel) | High emissivity: 0.90 (e.g. Black painted steel) | Max permissible heat loss (W/m²) |
| 30 | 40 | 40 | -6.45 |
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“Custom Insulation have proven over many years to be experts in their field. The quality of their products, technical capability and customer service is excellent”.
Supply Chain Manager, Rail Industry.