Technical Articles

XPE insulation is a flexible closed-cell foam made from cross-linked polyethylene. Known for its thermal performance, moisture resistance, durability, and easy handling, it is widely used in metal roofing, HVAC duct wrapping, pipe insulation, cold-chain packaging, and industrial applications.

Foil thickness is often treated as the first indicator of quality when sourcing reflective roof membranes. But a thicker aluminium foil layer does not automatically mean better thermal performance, greater strength or a better fit for the roof system. Reinforcement, lamination quality, air space and installation details also matter.

This guide explains the key factors to consider when purchasing roof sarking, including compliance requirements, material strength, condensation control, fire performance, installation compatibility and supplier reliability. Learn how to compare roof sarking products beyond price and select a solution that suits your roof system, climate conditions and project requirements.

Roof sarking and roof membranes are both installed beneath roof cladding, but they serve different purposes. Roof sarking is mainly used to reflect radiant heat and provide an extra layer of weather protection, while roof membranes focus more on water resistance, breathability and moisture control. Understanding the difference helps you choose the right roofing underlay for your climate, roof design and insulation requirements.

Is roof sarking mandatory in Australia? Learn when sarking is required for tiled and metal roofs, including roof pitch and condensation requirements.

Roof sarking is an important membrane installed beneath metal roofing or roof tiles in many Australian homes. It helps manage moisture, condensation, wind-driven rain and radiant heat, while working alongside insulation to improve the overall performance and durability of the roof system.

While commonly called aluminum foil film, these materials are typically composite structures made by bonding aluminum foil with films, fabrics, or other substrates. Different layer combinations provide different levels of strength, insulation, and protection for various applications.

Aluminum foil woven fabric is often described as a reflective insulation material, but the working idea behind it is fairly direct. It reflects a large part of incoming radiant heat instead of absorbing it, mainly through a continuous aluminum surface supported by a stable woven structure. The real performance depends less on the material name and more on surface condition, installation method, and whether an effective air layer is formed in the system.