Royal Havilah
Royal Duct pre-insulated foil-faced HVAC ducting boards stacked in the factory

PRE-INSULATED HVAC DUCTING

Royal Duct

A high-performance PIR (Polyisocyanurate) insulation board, specifically designed for ducting applications. With superior thermal conductivity, fire safety, and lightweight durability, it delivers efficiency and reliability for modern HVAC systems while being environmentally responsible.

Product overview

Engineered for efficient, fire-safe HVAC ductwork

Royal Duct is a PIR-based ducting panel built for modern HVAC systems. Its ultra-low thermal conductivity of 0.019 W/mK delivers maximum energy efficiency, while excellent fire resistance and lightweight durability make it reliable across demanding environments.

Free from CFCs and HCFCs, Royal Duct is an environmentally responsible choice — ideal for industrial, commercial, and high-standard facilities where thermal performance, hygiene, and air quality matter.

Royal Duct insulated wall and roofing system cross-section

Key features

Why specify Royal Duct

Ultra-low thermal conductivity

λ 0.019 W/mK rigid PIR core for maximum energy efficiency and minimal heat loss across the duct run.

Class O fire performance

Excellent fire resistance with low smoke and flame spread, suitable for high-standard building services.

Lightweight & durable

Rigid yet light aluminium-faced board that is fast to fabricate, handle, and install on site.

Environmentally responsible

Free from CFCs and HCFCs, supporting sustainable, lower-impact HVAC system construction.

Airtight construction

Sealed joints deliver low air leakage, protecting system efficiency and indoor air quality.

Engineered for HVAC

Purpose-built ducting board for industrial, commercial, and precision-controlled facilities.

Technical specifications

Performance data

Core MaterialRigid PIR (Polyisocyanurate)
Thermal Conductivity0.019 W/mK
FacingEmbossed / Smooth Aluminium
Board Thickness20mm, 25mm, 30mm, 40mm
Density45 – 48 kg/m³
Fire RatingClass O
Air LeakageClass B / C (EN 12237)
Blowing AgentCFC & HCFC free
Royal Duct installed in commercial and industrial ceilings

Real projects

Installed across demanding environments

From food-grade processing facilities to large-scale cold storage warehouses, Royal Havilah insulation products perform where thermal precision, hygiene, and structural integrity are non-negotiable.

Food-grade processing facility showing overhead metallic ducting and Royal Duct insulation board installed across the ceiling
Food processing facility — overhead metallic duct runs fabricated with Royal Duct PIR board
Royal Havilah branded duct board installed on a ceiling soffit showing embossed foil facing and aluminium tape joints mid-installation
Royal Duct board mid-installation — embossed foil facing with aluminium tape sealed joints
Completed cold room interior with white insulated panel walls, flush ceiling, fluorescent strip lighting and sliding door
Cold room interior — white insulated panel walls and ceiling with integrated lighting
White cleanroom interior with insulated sandwich panel walls, observation window, HEPA filter grille and pass-through hatch
Pharmaceutical cleanroom — insulated wall panels with HEPA filter grille and pass-through hatch
Large cold storage warehouse interior under construction with workers on scaffolding alongside tall white insulated panel walls and overhead ductwork
Large-scale cold storage warehouse — insulated panel wall installation with integrated HVAC ductwork
Massive industrial cold store exterior showing full-height white insulated sandwich panel cladding against a blue sky with steel structure
Industrial cold store exterior — full-height insulated panel cladding, structural steel frame
Completed MBG KS canteen building exterior — white insulated sandwich panel walls with black steel framing
MBG KS canteen — completed building using white insulated sandwich panel with black steel framing
Row of refrigerated truck bodies built with white insulated panels lined up at a yard
Refrigerated transport bodies — insulated panel construction for temperature-controlled logistics
Large canteen and community building exterior under construction at dusk with white insulated sandwich panels and black steel framing
Community canteen building under construction — white sandwich panel walls with black structural frame

Gallery

Royal Duct on site

Duct board ceiling installation — foil-faced PIR
Fabricated rectangular duct runs in a ceiling void
Rigid and flexible ducting integrated overhead
Pre-insulated duct board above a ceiling grid
Rectangular ducts with flexible take-offs

Where it performs

Ideal applications

Commercial and Industrial Buildings
01

Commercial and Industrial Buildings

Data Centres
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Data Centres

Specify Royal Duct for your HVAC system

Our engineering team will help you select the right board thickness and facing for your ducting requirements.