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New Build Insulation

The High Performance Insulation Solution

Blown Insulation For New Builds

Blown insulation is an excellent choice for new construction projects due to its superior ability to fill gaps and cavities, ensuring maximum thermal performance. It provides a seamless and efficient barrier against heat loss, draughts, and cold spots, making homes more energy-efficient and comfortable. This method is particularly effective in reaching tight and irregular spaces, ensuring comprehensive coverage and optimal insulation from the ground up.

For new builds, blown insulation contributes to long-term energy savings, improved indoor air quality, and enhanced structural integrity. It’s a high performance insulation solution for new builds that makes it easy to meet the new H1 Energy Efficiency standards in the New Zealand building code.

One Product. Zero Waste

Trufill® can be used to insulate all areas of your building structure saving time, energy and waste. Blow Insulation can work with both builders and architects and can configure the Trufill® system to suit your specific project needs.

Wall Insulation for New Builds

We insulate the walls of a new build at the framing stage once the prewiring and services have been installed in the wall cavities and the exterior cladding is in place. A specialised retainer product is used around the inside framing to hold the insulation in place once it’s blown into the wall cavities. This method ensures that the insulation fills the entire cavity, leaving no gaps or voids, unlike traditional insulation products. Blown insulation typically offers better performance due to its complete coverage.

Roof / Ceiling Insulation for New Builds

Depending on the size of your ceiling cavity, we can install blown insulation after the linings are in place. This process, known as an open blow, involves installing insulation to a variable thickness based on the required R-values. In cases of skillion or tight roof spaces, we can blow insulation from the underside using a specialised installation method in collaboration with the builder. Blown insulation is a high-performance product that generally outperforms other insulation materials, making it easier to meet the new H1 standards.
Blown Roof Insulation

Underfloor Insulation for New Builds

For new homes built on pile structures or with a cavity underneath, we use blown insulation to insulate the floors. We apply a specialised retainer product on the underside of the joists and blow insulation into the cavities between the floor joists. This method ensures comprehensive coverage and superior thermal performance, contributing to a more comfortable and energy-efficient home.

The Perfect Insulation Choice for New Homes

Insulating your home offers numerous advantages, enhancing overall comfort and health. Key benefits include:
  • Warmer & Drier Home
  • Save on Energy
  • Reduced Heat Loss
  • Less Risk of Illness

Where can you install Trufill Insulation?

Made from non-combustible Glasswool, Trufill® blown insulation is designed for timber frame walls, floors, skillion roofs and ceilings. The system is designed to provide high performance insulation for new build homes, completely filling the roof and ceiling cavities to create a complete thermal barrier for your home.

  • Safe-R Installer blowing underfloor insulation

    Ceiling Insulation

    Blown at medium density for skillion and open or low for truss.

  • Blown Insulation Installed in Skillion Roof

    Wall Insulation

    Blown at high density for typical homes or ultra for higher performance.

  • Warmafloor Blown Insulation Installed in New Floor

    Midfloor Insulation

    Blown at low to medium density depending on requirements.

  • Warmafloor Blown Insulation Installed in New Floor

    Underfloor Insulation

    Blown at low to medium density depending on requirements.

Product Technical Information

The following table shows R-Values when Trufill is blown into a cavity at various densities. These values are indicitave and are based on standard timber frame construction.

Trufill Insulation System R-Value in Relation to Thickness
Thickness (mm)
Open – 12 kg/m3
((0.043 W/mK at 15°C))
Low – 15 kg/m3
(0.041 W/mK at 15°C)
Medium – 19 kg/m3
(0.039 W/mK at 15°C)
High – 26 kg/m3
(0.035 W/mK at 15°C)
Ultra – 32 kg/m3
(0.0327 W/mK at 15°C)
45mm 1.0 1.0 1.1 1.2 1.37
90mm 2.0 2.1 2.3 2.5 2.75
140mm 3.2 3.4 3.5 4.0 4.28
175mm 4.0 4.2 4.4 5.0 5.35
190mm 4.4 4.6 4.8 5.4 5.81
225mm 5.2 5.4 5.7 6.4 6.88
240mm 5.5 5.8 6.1 6.8 7.33
275mm 6.3 6.7 7.0 7.8 8.40
290mm 6.7 7.0 7.4 8.2 8.86
325mm 7.5 7.9 8.3 9.2 9.93
360mm 8.3 8.7 9.2 10.2 11.00
395mm 9.1 9.6 10.1 11.2 12.07

Frequently Asked Questions

Get all the information you need to make an informed decision – explore our FAQ section and find answers to your most pressing questions about Warmafloor Insulation and roof insulation in general.

Why is blown insulation better for new builds than traditional insulation products?

Blown insulation offers several advantages over traditional insulation products, particularly for new builds. Firstly, it provides superior coverage, filling every corner, crevice, and hard-to-reach areas to create a comprehensive, uniform thermal barrier. This characteristic makes it extremely effective in insulating all areas within a home, such as walls, roofs, underfloors, and midfloors.

Trufill is Codemark certified – What does this mean?

CodeMark certification is a building product certification scheme in New Zealand and Australia. Managed by the Ministry of Business, Innovation and Employment (MBIE) in New Zealand and the Australian Building Codes Board (ABCB) in Australia, the CodeMark scheme provides a process for manufacturers and suppliers to have their building products, systems or designs certified as meeting the requirements of the building codes of these countries.

Once a product is CodeMark certified, it must be accepted by any building consent authority as complying with the Building Code, as long as it’s used as specified in the certificate. This gives builders, architects, designers, and consumers confidence that the certified product meets the highest standards of safety, quality, and compliance.

What makes Trufill a high performance insulation option?

Trufill Insulation can deliver higher R-Values compared to other insulation products due to its unique form and installation method. This blown insulation is made up of small particles that can fill all corners, crevices, and hard-to-reach areas, providing comprehensive and uniform coverage. Furthermore, the material used in Trufill Insulation can be installed at higher densities, which allows it to provide superior resistance to heat flow (higher R-Values), resulting in a more energy-efficient home.