Roof Insulation
Whether you’re building new or upgrading something older, installing roof insulation is a great investment in the long-term energy efficiency of your home. To keep your indoor temperature comfortable year-round and your energy bills low, browse our range of premium roof insulation and find out how to install roof insulation today.
Why Install Roof Insulation?
Australia's famed and much-loved climate can offer up some extremes. No matter where you are, chances are that to maintain a comfortable indoor temperature year-round, you’ll need quality roof insulation. A properly insulated roof keeps your home cooler in summer and warmer in winter, improving energy efficiency and reducing the need for heating and cooling systems. Insulation in your roof not only helps maintain a stable indoor environment but can even help to improve air quality and reduce moisture build-up.
Summer Heat Gains
The below diagram shows Summer heat gains in a home without insulation. Installing thermal insulation in the walls, ceilings, and underfloor helps to keep the home cooler in hot weather and reduce the reliance on air-conditioning systems. Insulation is a good way to reduce your energy bills!

Winter Heat Losses
The below diagram shows Winter heat losses in a home without insulation in roof, walls, or floor. Between 25% and 35% of heat is lost through the ceiling, higher than any other area of the home. A further 15% to 25% of heat is lost through the walls, leading to high heating bills.

Make Your Home More Comfortable
Roof insulation regulates indoor temperature by reducing heat gain in summer and retaining warmth in winter. This creates a more consistent, comfortable living environment all year-round.
Improve Energy Efficiency
With quality roofing insulation taking the pressure off your heating and cooling systems, you’ll use less energy, which means lower energy bills and a smaller carbon footprint.
Protect Your Home from Temperature Extremes
Roof insulation acts as a thermal barrier against the elements, protecting the interior of your home against extreme heat or cold. It can also help protect your furniture, walls, and electronics from damage caused by extreme temperature fluctuations.
Types of Roof Insulation Materials
Roof Batt Insulation
Roof batt insulation is an affordable and easy-to-install option that is highly effective. It is a popular choice and provides excellent thermal and soundproofing qualities.
Roofing Blanket Insulation
Perfect for metal roofs, roofing blankets combine reflective foil with insulation material to effectively reduce heat absorption. Products like Kingspan Aircell and the Ametalin range are ideal for reducing radiant heat and enhancing overall thermal resistance.
Ceiling Insulation
Typically installed beneath the roof, ceiling insulation plays a vital role in energy efficiency. Working in tandem with roof insulation, ceiling insulation is a critical component of a well-insulated, energy-efficient home.
Easy Roof Insulation Installation Options:
DIY Roof Insulation
If you’re thinking of installing roof insulation yourself, here are a few tips:
- Choose glasswool batts or foil-faced blankets, they are easy to cut and install.
- Use protective gear, including gloves, a mask, and goggles.
- Stay safe, and avoid handling rigid boards or spray foam unless you’re experienced.
- If your roof space is cramped or you’re unsure about correct installation, consider hiring a professional.
Professional Installation
If your roof space is hard to access, steep, or you’re nervous about handling the material, a professional roof insulation installer is the best choice. Professional installers know what hazards to look out for and will ensure there are no gaps that will compromise the energy efficiency and effectiveness of your insulation.
Why Choose Roof Insulation from Pricewise Insulation?
High quality and low fuss, Pricewise has a comprehensive range of premium roof insulation at affordable prices. We offer practical advice on product selection and expert guidance on installation.
Extensive Product Range
With Australia’s biggest online range of insulation products from top brands, we offer insulation solutions to suit any type of home or commercial building. From roof batts to reflective foil to high-performance insulation boards, you will be spoilt for choice with our extensive product range.
Expert Knowledge
Our team is on hand and ready to help. Whether you’re unsure about R-values or need guidance on the best product for your climate or roof type, our friendly team can help you choose the right product for your needs and provide expert installation advice.
Cost-Effective Solutions
Pricewise offers high-quality products at competitive prices. Our team will help you find the most effective and affordable solution for your needs.
Frequently Asked Questions About Roof Insulation
Most quality roof insulation products last between 20-50 years or longer, depending on the material used and the installation quality.
Insulation should stay dry to remain effective. If it gets wet, its thermal performance may be compromised, and there is a risk of it developing mould. Moisture-resistant roof insulation options are available for added protection.
The cost to insulate a typical Australian roof varies depending on the material and roof type. DIY options can lower the upfront cost, but professional installation ensures optimal performance.
Yes, flat roofs can be insulated from above or below the roof’s surface using rigid foam boards, spray foam, or other materials designed for small cavity spaces.
If you’re fitting roof insulation yourself:
- Ensure you’re using appropriate safety equipment.
- Pre-measure and cut your insulation material to size.
- Install over rafters for pitched roofs, or above/below the surface in flat roofs.
- Use fasteners to secure insulation and ensure there are no gaps.
For hard-to-reach areas, professional installation may be required.
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