Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Domus Thermal duct insulation range extended

Polypipe Ventilation is pleased to announce that its Domus Thermal duct insulation range is being extended to cover its 220mm x 90mm Megaduct Rigid Duct System.

The Dormus Thermal range from Polypipe

Megaduct is a range of large-capacity rectangular ducting, suitable for larger installations. The system is particularly appropriate for applications that require the higher air flow rates associated with whole-house ventilation within larger domestic properties and light commercial environments.

Domus Thermal was previously available solely for the best-selling 204mm x 60mm Supertube rectangular ducting range, as well as Ø100mm, Ø125mm and Ø150mm round profiles. However, the demand for this innovative duct insulation system has been such that it will be extended to cover the 220x90mm Megaduct size. The Domus Thermal range was also expanded in 2014 to cover a wider range of Supertube fittings, including vertical 45º bends and a fixed spigot plenum; both of which are included in the new Megaduct range.

Domus Thermal is a patented system that significantly improves the thermal insulation of round and rectangular ventilation ducting in domestic properties, reducing heat loss and preventing the formation of condensation.

Domus Thermal was developed by Polypipe Ventilation to meet Building Regulation requirements as outlined in the Government’s 2010 Domestic Ventilation Compliance Guide.

The guide states that ducting must be insulated where it passes through unheated areas and voids, such as loft spaces, to reduce the possibility of condensation forming, which can lead to unsightly – and unhealthy – mould. It sets a minimum duct insulation standard that is the equivalent of at least 25mm of a material having a thermal conductivity of =0.04W/(m.K). Many domestic duct insulation products are often unable to meet this requirement; however, Domus Thermal exceeds it and allows ventilation installers to fully comply with Part F of the 2010 Building Regulations.

Domus Thermal has been recognised by the LABC for this same purpose, as well as for additional use to insulate rigid ducting passing between the mechanical ventilation with heat recovery appliance and external terminals in the heated area of a property. The latest NHBC guidelines reinforce this use, stressing the need to avoid condensation forming on the outside of these colder duct runs.

Manufactured from silver expanded polystyrene and incorporating carbon particles to further improve performance, Domus Thermal has high insulative properties. Each section consists of two moulded halves that fit snugly around the ducting and simply lock into place using a moulded interlocking feature. The straight-length sections are also moulded, with a cutting guide every 10mm for added simplicity. Such a design not only makes for quick and simple installation, but also looks highly professional.

The robust structure and design of Domus Thermal, in addition to the combined strength of the insulation being fitted around Polypipe’s Domus rigid duct, makes the system extremely resilient to site handling.

Polypipe Ventilation is at the forefront in delivering energy-efficient ventilation solutions and plays a vital role in helping customers achieve the higher levels of the Code for Sustainable Homes. The company offers a complete range of Domus rigid and semi-rigid ducting, Silavent mechanical extract ventilation appliances - including mechanical ventilation with heat recovery units - in addition to bathroom and kitchen intermittent extract fans, making it a single source for all domestic and light commercial ventilation equipment and systems.

For further information on Domus Thermal or any of Polypipe Ventilation’s energy saving ventilation solutions, please visit or call 08443 715523.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Links may be included in your comments but HTML is not permitted.