Knowledge Centre
Practical Insulation Knowledge for Better Project Decisions
Short explanations to help you understand insulation materials, applications and the factors that influence selection.
Air Bubble vs XLPE: Where Each Fits
Both are supplied as rolls or sheets, but they work on different principles — availability in a similar format isn't a reason to treat them as interchangeable.
Air Bubble Insulation
- A reflective insulation category.
- Commonly considered where radiant heat through metal roofing is important.
- Performance depends strongly on the installation configuration and air-space conditions.
XLPE Foam Insulation
- A closed-cell foam insulation category.
- Commonly considered for HVAC, piping, duct and building applications.
- Useful where a continuous foam insulation layer and moisture-related considerations matter.
The key difference
Air Bubble primarily relies on reflective insulation principles, while XLPE is a closed-cell foam insulation material. The suitable system depends on the application, assembly and required performance.
What to Consider When Insulating a Warehouse Roof
Warehouse roof insulation decisions generally come down to a handful of project-specific factors, not one universal product.
Factors to consider
- Roof construction
- Solar / radiant heat exposure
- Internal temperature objective
- Ventilation
- Condensation and moisture
- Fire and acoustic requirements
- Available roof build-up
- Installation method
Materials commonly evaluated
Depending on the project, buyers may evaluate any of the following — which one fits best depends on the factors above.
- Air Bubble
- XLPE Foam
- Glass Wool
- Rock Wool
Why Condensation Control Matters in HVAC Insulation
Condensation can occur when a surface temperature falls below the dew point of the surrounding air — a common issue on chilled ducts and pipework if the insulation system isn't right for the conditions.
What the insulation system needs to get right
- Insulation continuity across the full duct or pipe run
- Correctly treated joints and seams
- Attention to fittings and penetrations
- Vapour / moisture control, where required
- The operating temperature of the duct or pipe
- Ambient temperature and humidity conditions
- Selecting the right material and system for those conditions
Important
Condensation control depends on the complete insulation system and installation, not on any single material alone.
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Products
View All ProductsGeneral guidance only — final material selection depends on the complete application and project specification.
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Have a Specific Insulation Question?
If your requirement depends on a particular building, system or specification, share the application details with Wonder Cool:
- Application
- Approximate area to be insulated
- Project location
- Known specification, if available