Cleanroom Air Distribution Systems

PIR Pre-Insulated Air Duct

A lightweight rigid duct fabricated from closed-cell PIR panels with aluminum foil facings that combine the air barrier and thermal insulation in one assembly.

Closed-Cell PIR Core
Integrated Thermal Insulation
Aluminum Foil Facings
Lightweight Panel Assembly

Request a Quote Browse Products

Product Introduction

PIR pre-insulated ductwork is cut and folded from rigid closed-cell panels faced on both sides with aluminum foil. The finished duct eliminates the separate sheet-metal shell and external insulation layer used in conventional systems, reducing installed weight and limiting thermal bridges. Male-female panel edges, aluminum profiles, vapor-tight foil tape and compatible sealant form the longitudinal and transverse joints. The smooth foil interior suits dry conditioned supply and return air where the panel is protected from impact and the selected facing is compatible with cleaning practices.

Key Features

Low-conductivity PIR foam provides useful thermal resistance with a compact 20–30 mm wall.

Continuous foil facings create clean internal and external surfaces and support vapor control.

The combined duct-and-insulation panel reduces suspended load and installation operations.

Factory-routed grooves and aluminum closure profiles produce accurate corners and branch fittings.

Customer Product Concerns

A pre-insulated duct must preserve an uninterrupted vapor barrier and protect its foam edges from air leakage, moisture and jobsite damage.

Separate metal duct and insulation increase ceiling load and labor.One rigid PIR panel performs as the duct wall and thermal insulation layer.

Foil cuts at corners become paths for condensation moisture.Continuous foil tape, formed corner profiles and compatible sealant close every exposed edge.

Foam panels are damaged around hangers and service openings.Load-spreading support saddles and reinforced penetrations protect the low-density core.

Field-made joints vary in alignment and air tightness.Matched edge profiles and controlled cutting templates produce repeatable section geometry.

Typical Applications

Indoor cleanroom supply ductsReturn-air distributionLow-load suspended ceiling routesHumidity-controlled HVAC branchesPrefabricated mechanical modules

Technical Parameters

Typical material data for aluminum-faced PIR pre-insulated duct panels are listed below.

Core Material	Closed-cell polyisocyanurate (PIR) rigid foam
Panel Thickness	20–30 mm
Effective Width	1200 mm standard panel width
Maximum Length	4000 mm standard panel length
Steel Facing Thickness	0.06–0.20 mm embossed aluminum foil facing on each side
Core Density	45–55 kg/m³
Thermal Conductivity	0.020–0.023 W/(m·K) at approximately 10–25°C mean temperature
Surface Finish	Embossed or smooth aluminum foil laminate on internal and external faces
Joint Type	Male-female panel joint with aluminum profile, foil tape and vapor-tight sealant
Customization	Available based on the intended application and operating environment.

Available Options

Antimicrobial coated interior foilReinforced external aluminum facingFlanged equipment connection profilesRectangular fittings and branch modules

Planning a PIR Pre-Insulated Air Duct specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

Talk to Our Team