Improve home energy efficiency with a sisalation foil wrap

A sisalation foil wrap acts like a second skin for your home – providing an additional thermal barrier. The more insulated layers you have the more energy efficient your home will be. Installed beneath foam backed external vinyl cladding, sisalation foil provides substantial benefits.

  • Reduces radiant heat transfer
  • Prevents moisture ingress from external walls
  • Acts as a dust and wind barrier
  • Minimises draughts inside wall cavities
  • Improves performance of insulated vinyl wall cladding
  • Helps maintain stable indoor temperatures year-round

Should I add sisalation foil to my new build?

Absolutely. Sisalation Foil is actually a requirement on all new builds, but it’s also a smart investment for energy efficiency and a comfortable living environment.

Significantly boost your home’s insulation by adding an extra protective layer beneath foam-backed vinyl cladding. It helps regulate internal temperatures – keeping your home cosy in winter and cooler in summer – while also providing additional weatherproofing for long-term protection.

Forget timber, brick, or fibre cement, this system delivers one of the most effective and low-maintenance exterior insulation solutions available.

Does my renovation or extension need Sisalation Foil?

While not a requirement on existing dwellings, we still recommend adding siaslation foil. Sisalation foil can significantly improve energy efficiency and indoor comfort for any renovation or extension.

When installing vinyl cladding over existing brick or weatherboards, adding a foil wrap provides a reflective barrier, helping to reduce radiant heat transfer and regulate indoor temperatures year-round. It also helps prevent moisture from entering wall cavities, protecting against mould growth and potential structural issues.

Long-term benefits of foil wrap combined with vinyl cladding

Our vinyl cladding installers handle the entire installation process efficiently and professionally, applying foil tape around all windows, joins and the top and bottom edges on walls to achieve a tight seal and minimise draughts.

Once your wrap and cladding are installed, there’s no need for painting or ongoing upkeep – just a beautifully finished, well-protected home that saves you money year after year.

In short, while optional for some renovations, sisalation foil is a smart, cost-effective upgrade adding long-term value and protection to your home.

Contact us today to learn more or request a free, no-obligation quote.

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Duratuff Duratuff
Duratech Duratech
Cambridge Cambridge
Cedarline Cedarline
Vertical Vertical
Eaves Eaves

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Answers to some common questions

  • How does adding a foil wrap improve insulation?

    Sisalation foil improves insulation by reflecting radiant heat and reducing heat transfer through your home’s walls, roof, or floors. When installed with an air gap, the surface of sisalation can reflect up to 95% of radiant heat, significantly boosting your home’s overall energy efficiency and comfort levels. It also provides a secondary layer of protection by reducing draughts, moisture ingress, and dust penetration.

    In combination with foam-backed cladding, sisalation foil contributes to the building’s total r-value, resulting in a more stable indoor temperature all year round.

  • Is sisalation foil expensive?

    No, sisalation foil is not generally expensive. It offers good value compared with many other insulation solutions.

  • What is r-value?

    R-value is defined as the ability of a material to resist heat flow. The better the building retains heat, the higher the r-value.

Have a different question? Drop us a line.

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