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Insulation
2 February 2026

Why Blown Insulation Is Great for Insulating Older Homes 

Older homes in New Zealand offer unique charm, but they often present challenges when it comes to keeping them warm, quiet, and energy efficient.

IW
The Insultech Waikato teamInsulating Waikato homes from Fairfield, Hamilton
Older home being insulated

Older homes in New Zealand offer unique charm, but they often present challenges when it comes to keeping them warm, quiet, and energy efficient. Many lack adequate insulation, leading to chilly winters, hot stuffy summers, and extra noise. Blown insulation is great for insulating older homes because it can be installed easily without the need for major renovations.  

️Insulating Older Home Walls Without Major Disruption 

One of the biggest hurdles when insulating older homes is the wall structure itself. Traditional batt or blanket insulation requires removing wall linings, which means extra time, cost, and disruption to your daily life. Blown insulation offers a smart alternative. Our process involves drilling small, discreet holes into your wall lining or cladding. We then use specialised equipment to blow insulation material into the cavity, ensuring it fills every gap and space, even around pipes and wiring. Once installed, we neatly seal these small holes, leaving your walls looking untouched. This simple method means you can enjoy fully insulated walls, creating a warmer, quieter, and more energy-efficient home, often completed within a single day. 

Insulate Your Ceilings with Blown Insulation

Heat naturally rises, and without effective ceiling insulation, a large amount of warmth escapes through your roof. Blown insulation is perfect for filling roof cavities, guaranteeing there are no gaps or thin spots where heat can leak out. Our flexible hoses ensure the insulation spreads evenly across the entire ceiling space. Even if your home already has some insulation, we can install blown insulation directly on top to significantly improve performance. This creates a thicker, seamless thermal layer that helps keep heat inside during winter and out during summer. This even coverage helps eliminate cold spots, making your home much more comfortable all year round. 

Quiet Your Home with Better Soundproofing 

Older homes often have thinner walls and less sound protection, which can make everyday noises, more noticeable. Blown acoustic insulation, helps reduce sound transfer, creating a calmer and more peaceful indoor environment. By adding acoustic insulation to your internal walls, you can block out unwanted noise travelling between rooms within your home.  

Make Your Older Home Warmer and Quieter with Blown Insulation

If your home feels cold in winter and hot in summer, it may be time to think about improving your insulation. Blown insulation is a simple, effective way to make your home warmer, quieter, and more energy efficient without major work.  

At Insultech, we have experience working in many older Waikato homes. Our team can inspect your property and recommend the best solution for your walls, ceilings, and floors. 

Contact Us Today to book your free home insulation check and see how blown insulation can transform your home.  

0800 313 310 

sw@insultech.co.nz 

Wondering what your home needs?

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