Indoor temperature has a significant impact on the comfort and performance of a building’s occupants, whether in a commercial, residential or leisure environment.

Modern HVAC (heating, ventilation and air conditioning) units control the interior climate – and effective, high-quality duct insulation helps maintain desired airflow temperature throughout the building. 

As the air in the ducts travels throughout the complete building, it passes many levels without heating or cooling available, causing an unwanted temperature rise or drop. 

Quality insulation products prevent energy loss should cold air start to heat up, or hot air begin to cool down, when travelling from the unit to its destination. They help retain indoor comfort, without using excess energy to reheat or cool the air.  

Learn more about ventilation insulation – and how ROCKWOOL solutions can boost the energy efficiency of your systems and buildings. 

Learn more about ventilation insulation – and how ROCKWOOL solutions can boost the energy efficiency of your systems and buildings.

Ventilation Duct Insulation Products

Why do we need ventilation duct insulation?

HVAC units are designed to maximise comfort in large, modern constructions, including: 

  • Industrial – energy plants, warehouses, data centres and other buildings where ventilation units are installed 
  • Commercial – sports centres, offices and leisure
  • Residential – apartment blocks 
  • Essential services – hospitals and airports

 

This can require a great deal of energy. But effective use of insulation results in lower consumption levels, leading to a more cost-efficient and environmentally sustainable constructions1.

Our duct insulation products can be used for rectangular and circular ventilation ducts operating within a temperature range of 12°C to 230°C.They reduce the energy required to keep hot and cold air flowing at the optimum temperature.

As ducts travel throughout buildings and transport hot air, this can also pose a fire risk. Insulating ventilation ducts with fire resilient stone wool improves fire safety.

Calculator and savings

Insulation of ventilation ducts can lead to significant savings. 

Generally, insulating HVAC applications can deliver a return on investment within three years – helping create a far more cost-efficient building.

The amount of insulation required depends on the size and shape of your ventilation ducts, the ideal temperature and other environmental factors.

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Due to optimal co-operation with production departments, we can guarantee the highest quality available. We understand our clients and markets and know which performance and requirements must be met.

Rob Kooiker

ROCKWOOL Group Product Manager

Case studies

 

The challenge

The Minerva Primary Academy’s ventilation system incorporates an extensive ductwork system featuring both internal circular and external rectangular sections.

To ensure optimum performance for the system, external ductwork sections require effective insulation to protect them from changes in the ambient temperature. 

 

The solution

ROCKWOOL DuoDuct and ROCKWOOL DuctWrap was specified for Minerva Primary Academy. ROCKWOOL DuoDuct is a non-combustible stone wool slab which provides thermal insulation to external ducts carrying warm air, chilled air or dual-purpose duct systems. The insulation is designed for use with rectangular external ducts and is made using robust ROCKWOOL Dual-Density technology.

Internal ductwork was insulated with ROCKWOOL Ductwrap, a lightweight and flexible thermal insulation roll faced with reinforced aluminium foil. Like DuoDuct, ROCKWOOL Ductwrap is acoustically absorbent and A1 non-combustible for complete peace of mind, ensuring all the relevant project requirements were comfortably achieved. 

 

The results

“We had some tricky areas to insulate externally, especially around the air handling unit. I was impressed with how easy the DuoDuct was to install. It’s a robust, hard-wearing product but it’s a doddle to cut with a handsaw. As such, it was straight-forward to make all our cuts and square up and fix all the individual DuoDuct sections”

Daniel Rowan, DPR Thermal 

Minerva Primary Academy
We had some tricky areas to insulate externally, especially around the air handling unit. I was impressed with how easy the DuoDuct was to install. It’s a robust, hard-wearing product but it’s a doddle to cut with a handsaw. As such, it was straight-forward to make all our cuts and square up and fix all the individual DuoDuct sections

Daniel Rowan

DPR Thermal
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PDF
13.3 MB

HVAC Systems Guide

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PDF
1.1 MB

HVAC Specification Guide

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1.2 MB

RockLap H&V Pipe Section Packaging Guide

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PDF
1.6 MB

Thickness of ROCKWOOL Insulation

Download our HVAC Systems Guide

Financial support

Check the Energy Savings Trust website to see whether there are any financial support schemes available for duct ventilation insulation.

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