Products > Sarking


Roof sarking is positioned under your roof tiles during installation by the builder. It is rolled out in sections parallel to the eaves with an overlap between each layer to help prevent wind driven rain and dust from getting into the roof cavity. Wooden battens are used to secure the sarking to the roof rafters and to allow assembly of
the roof tiles on top of the sarking.

Thermoseal roof sarking is a multi-layered, non-permeable membrane made specifically for residential roofs. It is developed and laminated in Australia by CSR Bradford using flame retardant adhesives to ensure compliance to BAL bush fire ember attack requirements.

It has a distinctive green, outward facing surface and a reflective silver foil on the inward facing side. The reflective foil can help slow down heat flow, helping to make your home feel more comfortable.


Your roof tiles are the beautiful and tough exterior, but roof sarking is the hidden second skin™ that provides extra protection when you need it most.


How roof sarking can protect your home during construction:

  • Protects the building structure from the weather prior to the application of the roof tiles,which limits water damage to internal structural components
  • Improves on-site work flow efficiency by allowing some internal trades to commence workbefore the roof tiles are applied.

How roof sarking helps protect your home once it is completed:

  • Improves thermal performance by shielding the home from up to 97% of radiant heat when combined with an air-space, helping to provide a more energy efficient and comfortable home
  • Helps protect your home from unseen mould growth or even worse, ceiling staining or permanent damage which can result from the entry of storm driven rain into the roof cavity
  • Limits dust entering the home through gaps around downlights and vents by reducing draughts that blow dust into the roof space
  • Provides compliance to BAL bush fire ember attack requirements in accordance with AS3959 by providing a secondary form of ember protection for the roof space ™ all products comply with a flammability index of less than or equal to 5 when tested in accordance with AS1530.2.