Heat loss through the ceiling accounts for the largest portion of heat loss from a home.
If your ceiling is uninsulated or needs a top-up, you could be losing precious heat and wasting energy and money. Conventional ceiling insulation can be difficult to install without gaps and joins particularly in low and tight access roof spaces. Roof timbers should be covered to reduce heat loss through them. Insulmax® ceiling insulation can be installed in any suitable ceiling and is the ideal solution for low pitch roof structures. Insulmax® ceiling insulation is a water-resistant, high quality, soft white mineral wool manufactured to insulate roof spaces.
The blown blanket insulation system of Insulmax® insulates the entire ceiling and fills all corners and crevices with no voids or gaps, making it more effective than conventional segment or blanket products. Installed at almost any thickness, we can suit your individual requirements of insulation R rating and budget.

Why insulate your ceiling?
Ceiling insulation will keep your home warmer, drier and healthier. A home with no insulation has been estimated to loose around 40% of it's heat through the ceiling making them the first area that home owners should consider when increasing their homes insulation. Insulmax® can be installed at almost any thickness allowing ceilings to be completely insulated or topped up to achieve current standards.
Insulating your ceiling space reduces heat loss from your home allowing it to retain more heat making it warmer and easier to heat. Heating bills can be reduced and your home will feel drier, quieter and generally a more confortable and healthy place to live. When you’re in a newer home, you’ll notice how easy it is to maintain a comfortable, dry and healthy indoor environment. Insulmax® can make this a reality in your older home as we increase your homes insulation to modern standards.
How we insulate your open ceiling
Assessment
Assessment
An Insulmax® assessor checks your existing ceiling insulation and advises on options available to bring the insulation to desired or current insulation standards. Thermal imaging equipment can be use to identify gaps in existing insulation which my be difficult to access from the roof space. A quotation can be provided for various options to suit budget and requirements.
Some downlights, transformers and other heat sources cannot be covered by insulation. Our process identifies these and achieves recommended practices of clearances. Insulmax® ceiling insulation is compatible with all heat transfer and heat recovery systems.
Installation
Installation
Insulmax® blown mineral fibre insulation can be very quickly and easily installed in the tightest of roof cavities.
The amount of insulation installed is specified by the manufacturer in the form of a coverage chart which gives the number of 16.6kg bags of insulation required to achieve the desired insulation value in your roof area.
By installing the quoted number of bags and not to a specified thickness the customer can be assured that their roof space is being installed correctly according to the quotation.
Why choose Insulmax® for your home insulation?
Approved and Certified
Insulmax® wall insulation is approved by all councils in New Zealand* and holds CodeMark certification, which is the highest level of product assurance in New Zealand. *Installing any type of insulation in the exterior walls of your home requires an application to council for a building consent or exemption.
Superior installs
Insulmax® is installed using holes smaller than a 10 cent coin reducing the impact on your homes and making finished holes difficult to spot with guaranteed lasting durability. Every install is assessed with high resolution thermal imaging equipment to ensure that the wall structure has been properly insulated.
50 Year Guarantee
All aspects of an Insulmax® wall insulation install are covered by a 50 year written guarantee excluding paint systems which are 15 years.
Nationwide support
Insulmax® is the largest and most specialised retrofit wall insulation group with owner-operated branches throughout the country offering local service, backed by national support and experience.
Your choice of install
Insulmax® is certified to be installed through ALL common exterior claddings and internal linings with or without building paper, giving you the choice of how we install your existing home, whatever its age or cladding.
The environmental choice
Because wall linings are not removed, Insulmax® saves tonnes of building materials from ending up in landfills, and the insulation is made from 84% post-consumer waste. It contains inert materials, is CFC and HCFC free, and is classified as having zero ozone depletion potential and zero global warming potential.