Duct Insulation

The Complete Guide to Duct Insulation in the UK

Duct insulation is essential for enhancing the efficiency of HVAC systems across the UK. By minimising heat loss and improving energy efficiency, duct insulation contributes to reduced energy costs and enhanced indoor comfort. Whether for residential or commercial buildings, duct insulation plays a crucial role in maintaining consistent air conditioning and ventilation performance.

What is Duct Insulation?

Duct insulation involves wrapping or lining ductwork with insulation material to prevent heat loss or gain. This process ensures that conditioned air maintains its temperature as it travels through ventilation ducts. Materials such as rockwool ductwrap, mineral wool, and pir insulation are commonly used to insulate ducts.

Why Insulate Ductwork?

• Energy Efficiency – Reduces heat loss from warm air ducts and prevents cooling loss in air conditioning systems.

• Condensation Prevention – Insulating ducts minimises the risk of condensation, which can lead to moisture damage.

• Thermal and Acoustic Insulation – Insulation provides soundproofing benefits, reducing noise from HVAC systems.

• Fire Protection – Rockwool duct insulation offers a high level of fire resistance, enhancing fire safety within the building.

Types of Duct Insulation

• Rockwool Ductwrap – Stone wool insulation designed for thermal and acoustic insulation.

• Fibreglass Duct Insulation – Lightweight and cost-effective, ideal for air conditioning and ventilation ducts.

• PIR Insulation Boards – High-performance insulation with low thermal conductivity.

• Duct Slab and Ductwrap Insulation – Suitable for rectangular and circular ducts, offering flexibility and easy installation.

Key Benefits of Duct Insulation

• Reduced Energy Costs – By preventing heat transfer, insulated ducts reduce the demand on HVAC systems, leading to lower energy bills.

• Improved Thermal Performance – Insulation wrap ensures ducts maintain the desired temperature of the air flowing through them.

• Noise Reduction – Ductwrap is acoustically absorbent, reducing noise from airflow and mechanical vibrations.

• Enhanced Durability – Insulating ductwork protects it from external damage, corrosion, and temperature fluctuations.

Applications of Duct Insulation

• HVAC Systems – Essential for ventilation, heating, and air conditioning systems in homes and commercial buildings.

• External Ductwork – Insulation protects outdoor ducts from temperature extremes and weathering.

• Industrial Facilities – Used in large-scale ducting systems to enhance efficiency and reduce operational costs.

Installation of Duct Insulation

1. Prepare the Ductwork – Ensure ducts are clean and free of dust.

2. Measure and Cut Insulation – Use duct insulation boards or rolls to cover the duct surface.

3. Secure the Insulation – Use insulation stick pins or adhesive to attach the insulation.

4. Seal with Aluminium Foil Tape – Ensure joints and seams are sealed to enhance airtightness and thermal performance.

Cost of Installing Duct Insulation

The cost of installing duct insulation varies based on:

• Type of Insulation – Rockwool, PIR, or fibreglass.

• Size of Ductwork – Larger ducts require more material.

• Labour Costs – Hiring a professional thermal insulation contractor ensures correct installation.

Conclusion

Duct insulation is a cost-effective way to improve energy efficiency and thermal performance in buildings. By choosing the right duct insulation materials and ensuring proper installation, property owners can enjoy reduced energy bills, enhanced comfort, and prolonged HVAC system lifespan.

Order duct insulation today to upgrade your HVAC system and protect your ductwork for years to come.