Ceiling insulation: The key to a warmer and more energy-efficient home


Did you know that up to 40% of the heat from your home escapes through the roof during winter, making it difficult and expensive to keep your home warm and cosy? This is because warm air naturally rises and, without proper insulation, escapes through the roof space and outside. Similarly, in the summer, hot air from the roof space heats up against the ceiling and warms your living space, making it uncomfortable and increasing the need for cooling.

Adding ceiling insulation is the most effective way to stop heat loss and keep your home warm and comfortable. Insultech Insulation recommends using blow in insulation for roof spaces to provide a comprehensive barrier against heat transfer. Our team uses only the highest-quality insulation products to ensure the best results and maximum energy efficiency. Talk to us too about retrofitting wall insulation and underfloor insulation.

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Expertly installed roof insulation by Hamilton based Insultech Insulation for homes in Waikato and the Bay of Plenty

Most heat is lost through your ceiling and roof space
Adequate insulation helps to reduce heat transfer
Blow in insulation gives better coverage than traditional batts

We work with customers in Hamilton and Tauranga and across Waikato and the Bay of Plenty


Glasswool blow in ceiling insulation is the best choice


Blow in insulation is the best! Unlike traditional insulation batts or segments, blow in insulation doesn't leave any gaps, thermal bridging or vented cavities, giving you better coverage and a high R-value. You will need at least two layers of batts or blanket insulation to achieve the same effectiveness as blow in insulation.

We use Loft unbonded Glasswool blow in ceiling insulation which has excellent thermal properties and blowing characteristics. It is non-combustible and won't rot or deteriorate over time, making it suitable even for use around light fittings.

Glasswool ceiling insulation can be installed in both new builds and existing properties, in open or skillion roofs and is suitable for tight roof cavities with difficult access.

Frequently asked questions

Is Loft insulation completely safe?
Loft is made up to 80% recycled glass and inert materials that are non-combustible. the insulation can actually help to stop fire spreading. If you have recessed lights, we specify XLP protectors around every light. Loft insulation does not exceed the Gib 2010 Guide for maximum weight until R10 so it can be used with most gib board or plaster ceilings without any danger of collapse.
How does Loft blown roof insulation work?
Quite simply, Loft ceiling insulation works to keep the outside temperature out and the inside temperature in! It's like the lid on a chilly bin - if you put warm food in and close the lid, it stays warm. If you put cold food in, it stays cold. Just like the chilly bin lid, ceiling insulation works to stop or at least slow temperature transfer. High-quality insulation like Loft is better at regulating temperature transfer.
How easy is it to install Loft ceiling insulation?
Ceiling insulation is easy to install in both new builds and existing homes. If your home already has ceiling insulation such as Insulfluf we may be able to add to it to improve the R-value. However depending on the condition it may be better to remove it. If you have foil insulation this can no longer be repaired or retrofitted because of safety issues so it is best to remove it completely and upgrade to new insulation. Contact us to find out more and we can arrange an assessment of your current insulation.