The Year-round Benefits of Insulating Your Walls with Blown Insulation

Spring has arrived, and with it the opportunity to start planning those summer renovations. If you’re repainting or renovating your home, it provides a great opportunity to insulate your walls at the same time! Why wall insulation you ask? Keep reading to understand the benefits of wall insulation, and why this is an easy upgrade that shouldn’t be overlooked. 

What Is Blown Insulation 

Blown insulation, also known as loose-fill insulation, is a method used to insulate existing homes. Instead of removing linings or cladding, the insulation is blown directly into the wall cavity through small holes. The material, often made from fibreglass or cellulose, fills every gap and space inside the cavity, creating a complete thermal barrier. 

This method works well in older homes because it reaches areas that traditional insulation can’t. It seals the wall cavity, reduces heat loss, and helps keep your indoor temperature stable, no matter the weather outside. 

How Blown Insulation is Installed  

Blown insulation is installed using specialised equipment that injects the insulation into the wall cavity through small access holes. The material spreads evenly, filling gaps around wiring and framing to create a continuous layer of insulation. 

For interior installation, small holes are drilled into the plasterboard lining through which the insulation is blown in. They are easily replastered and sealed ready for a fresh coat of paint once the job is complete. 
 
If installed from the outside, the same process is used except through the external cladding. Don’t worry, this is a safe method and we follow a strict CodeMark certified process to ensure your home integrity is maintained. If you’re thinking about repainting the exterior, it provides the perfect opportunity to install wall insulation at the same time. 

Both methods are quick, tidy, and cost-effective, with minimal disruption to your home. 

Why Insulate Your Existing Walls 

Insulating your existing walls is one of the best ways to make your home warmer and more energy-efficient. Up to 25 percent of heat can be lost or gained through uninsulated walls. By filling your walls with blown insulation, you can reduce heat loss and heat gains, making your home much more energy efficient. 
 
Well-insulated walls also help keep homes cooler in summer, which makes a big difference during warmer months. A consistent indoor temperature means you’ll spend less on heating and cooling. 

Upgrade Without the Hassle 

Blown insulation is one of the easiest home improvements you can make. The process is fast, clean, and effective. Whether installed from the inside or outside, the results are the same, a home that stays warmer in winter, cooler in summer, and costs less to run. 

Here’s what one of our happy customers had to say: 

“Francois and the team did a great job insulating our 100 sqm place including all exterior walls and interior walls of the master bedroom. The best price we found, good comms, very accommodating and great quality work. It was very quick as well, getting the whole job finished in a day including plastering and clean up. Would 100% recommend if you are looking for retrofit blown insulation. 10/10!” 
— Marc Lewis, Google Review 

Ready to insulate your existing walls? 

Talk to the team at Insultech Waikato today. We’re Waikato’s local insulation experts with over 30 years of experience helping Kiwi homeowners create warmer, more efficient homes. Contact us to book your free home assessment and find out how easy it is to insulate your existing walls.