Rigid Ducting Systems (Metal & PVC)

Noisy airflow? Awkward bends killing performance? Rigid ducting systems in metal and PVC keep air moving smoothly where flexible options fall short. Designed to work with extractor fans, they deliver reliable airflow, cleaner installs and fewer headaches, whether you are planning a new build or upgrading an existing system.

Rigid ducting systems in metal and PVC form the backbone of reliable ventilation, moving air efficiently from source to outlet. Rigid ducting is what maintains airflow performance, reduces pressure loss and supports long-term system reliability. Whether you are specifying a domestic extract or a commercial ventilation system, choosing the right ducting makes the difference.

This collection brings together rigid ducting in metal and PVC, alongside specialist options for MVHR and radial systems.

Metal and PVC rigid ducting

Designed for durability and airflow efficiency, rigid ducting systems are used across residential, commercial and industrial applications. From straight runs to complex layouts, they offer a solid foundation for effective extraction.

Galvanised steel spiral and rigid metal ductwork

Galvanised steel spiral ducting is the standard choice for commercial and industrial ventilation. Strong, rigid and resistant to damage, it suits longer duct runs and higher airflow rates. Rigid metal ductwork maintains consistent internal diameters, which reduces turbulence and pressure loss. It is commonly used in warehouses and plant rooms where performance and longevity matter most. Note that galvanised steel is not suitable for commercial kitchen grease extract, which requires stainless or fully welded mild steel under DW/172.

Rigid PVC ducting for domestic and commercial extraction

Rigid PVC ducting is a lightweight, corrosion-resistant alternative for domestic and light commercial use. It is easy to handle, simple to install and well suited to bathrooms, utility rooms and small commercial spaces. Available in a range of sizes, rigid PVC systems integrate neatly with fans and accessories, giving a clean finish and dependable airflow without unnecessary complexity.

Domus ducting, MVHR and radial ducting systems

Modern ventilation often goes beyond basic extraction. For whole-house systems and energy-efficient builds, specialist ducting solutions play a key role.

Domus ducting installation and specification

Domus ducting systems are widely used in residential ventilation projects, particularly MVHR installations. Product pages carry the Domus datasheet and installation detail where we hold it, covering sizing, connections and fittings. Installers get consistent sizing, secure connections and clear documentation, which simplifies planning and compliance.

MVHR ducting size and system design for new builds

Correct MVHR ducting size is critical to system performance. Poor sizing leads to noise, inefficiency and reduced heat recovery. Rigid ducting is normally used for main distribution runs, giving smooth airflow and predictable performance. Getting the design right at build stage future-proofs the ventilation and supports energy efficiency targets.

Semi-rigid and radial ducting alternatives

While rigid systems offer strength and consistency, semi-rigid and radial ducting provide flexibility for complex layouts. Radial ducting is particularly common in MVHR setups, allowing individual supply and extract runs from a central manifold. These alternatives reduce installation time and simplify routing, especially in tight ceiling voids or multi-room applications.

Frequently asked questions

What is a rigid metal duct?

A fixed, solid duct made from galvanised steel, supplied in straight lengths with separate bends, reducers and connectors. It holds its shape under pressure, which is what keeps the internal diameter consistent and the pressure loss predictable.

Can PVC be used for HVAC ducts?

Yes, for domestic and light commercial systems. Rigid PVC is corrosion resistant and easy to install, but it is not rated for high temperature or grease-laden extract, so kitchen canopy duties need metal.

What are the four types of ductwork?

Rigid metal, rigid PVC, semi-rigid and flexible. Rigid gives the lowest pressure loss and the longest life; flexible is quickest to install but adds resistance, so it is best kept to short connecting runs rather than main distribution.

How often should ductwork be supported?

Support rigid duct runs at regular intervals, typically around every two feet for lighter PVC and per the manufacturer detail for metal. Unsupported runs sag at the joints, which opens seals and creates noise.