Pre-insulated PIR Duct Sheet

Thanks to its excellent products and quality services, UNT Duct is one of the leading pre-insulated pir duct sheet manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

 

 

At its core, it's a single, integrated panel designed to replace two-step traditional duct installation (fabricating metal ducts + adding insulation later). Each sheet consists of three key layers:

Core: Rigid PIR foam-a high-performance insulation material with exceptional thermal resistance (R-value).

Facings: Durable, protective outer layers (usually aluminum foil, aliminum sheet or pre-painted galvanized steel/) that act as an air barrier, vapor barrier, and structural reinforcement.

 

 

Traditional metal ducts force you to juggle fabrication, insulation (fiberglass, rockwool), sealing, and vapor barriers-adding time, labor, and risk of errors. Pre-insulated PIR duct sheet eliminates these headaches:

 

1. Faster Installation = Lower Labor Costs

Time is money-and this material cuts installation time by 30–50% compared to metal + insulation:

No separate insulation step: The PIR core is built-in, so you skip measuring, cutting, and attaching fiberglass/rockwool.

Lighter weight: PIR is 70–80% lighter than metal, so you need fewer workers and smaller lifting equipment (no forklifts for small-to-medium sections).

Example: A 100m² office duct project that takes 5 days with metal might take 2–3 days with PIR.

 

2. Superior Thermal Performance = Happier Clients

PIR foam has one of the highest R-values (thermal resistance) of any insulation material. This means: 

Minimal heat/cool air loss: Keeps HVAC systems running efficiently, reducing clients' energy bills by 15–25% annually.

No condensation issues: The airtight facing acts as a vapor barrier, preventing moisture buildup (which causes mold, rust, and insulation degradation in metal ducts).

For projects with strict energy codes (e.g., ASHRAE 90.1, LEED), pre-insulated PIR duct sheet is often the easiest way to comply.

 

3. Airtight & Low-Maintenance = Less Callbacks

Leaks in ductwork waste 20–30% of HVAC energy-and they're a nightmare for contractors (callback repairs eat into profits). Pre-insulated PIR solves this:

PVC or aluminum profiles joints + foil tape/sealant create an airtight seal (far more reliable than metal duct seams, which often gap over time).

Durable facings resist corrosion, punctures, and mold: Unlike metal (prone to rust) or fiberglass (absorbs moisture), PIR ducts last 20+ years with minimal maintenance.

 

4. Flexible & Adaptable to Any Project

Whether you're working in tight ceiling voids, clean rooms, or outdoor spaces, PIR duct sheet fits:

Shapes: Fabricates easily into rectangular, circular, or oval ducts (use a circular saw for straight cuts, utility knife for notches).

Environments:

Indoor: Ideal for hospitals (low dust, easy to clean) and data centers (stable temperatures).

Outdoor: Add a UV-resistant PVC jacket to protect facings from sun damage.

Sizes: Available in standard sheets (e.g., 1.2m x 2.4m, 1.2m x 3m) and custom thicknesses (10mm–42mm) to match project specs.

 

5. Cost-Effective Over the Long Haul

While upfront material costs may be slightly higher than basic metal, the total cost of ownership is lower:

Reduced labor = lower installation costs.

Lower energy bills = higher client satisfaction (and referrals).

Fewer repairs = no unexpected callback expenses.

 

Item	Unit	Specification
Panel Structure		Alu./PIR Foam/Alu.
Standard Panel Size	mm	3950*1200*20
Alu. Foil Thickness	mm	0.06 or 0.08
PIR Foam Density	kg/m3	55
Thermal Conductivity	w/m.k	0.022
Compressing Strength	Mpa	0.2
Bending Strength	Mpa	2
Water Absorption	%	0.36
Dimension Change	%	0.3
Working Temperature	℃	-100 to +80
Maximum Allowable Wind Velocity	m/s	≤12
Continuous Running Maximum Temperature	℃	≤70
Lifespan of PIR Pre-insulated Ductwork	years	>20