Let’s be honest, no one gets excited about underfloor insulation.
It’s not glamorous.
It’s not something you brag about at the next BBQ.
But here’s the thing: it can make a seriously BIG difference to your comfort. Not to mention your wallet.
So before we proceed with the educational portion of this blog, let us ask you a few questions for you to ponder:
Does your home feel icy in winter?
Is it impossible to cool in summer?
Does the pending arrival of your energy bill provoke a sense of anxiety, given that prices have only been going one way?
Can you guess where we’re heading with these questions?
The answer to all of these questions? Underfloor insulation.
Studies have shown that homes with suspended timber floors can use up to 161% more heating energy than homes on a concrete slab. So, if your home has hardwood floors, both warm and cold air will escape right through the cracks between your floorboards without a proper insulation solution. And that means your heater and air-con are working overtime (and costing you thousands in wasted energy costs).
So, as promised, here’s how underfloor insulation, especially YetiFoam, can help reduce energy bills and why it’s one of the smartest investments you can make.
Why underfloor insulation matters.
You might already have roof insulation (*applause if you do).
Without proper underfloor insulation, the outside cold air can sneak in and mess with your home’s internal temperature. That means:
- Your heater runs longer in winter just to keep up
- Your air conditioning works harder in summer
- Your energy bills spike (and stay high)
Insulating your floor helps trap comfortable air inside your home and keeps the outdoor temps where they belong: outside.
So, how does insulation actually save you money?
Let’s break it down:
1. Reduces heating and cooling costs
When your home retains the heat in winter and the cool in summer, your HVAC system doesn’t have to work as hard. This leads to lower energy consumption and reduced bills without sacrificing comfort.
2. Improves temperature regulation
Have you ever noticed how some rooms feel colder than others?
That’s often due to poor insulation.
A well-insulated floor helps maintain a consistent indoor temperature throughout your home. No more hot and cold patches or cranking the heater in just one room.
3. Lowers long-term maintenance
Heat and moisture sneaking in through the floor can lead to mould, and pest problems. Addressing the issue at its root with high-quality underfloor insulation can help prevent future damage (and expensive repairs). Seriously, your future self will thank you.

Why choose YetiFoam for your next insulation installation?
Not all insulation is created equal. And when it comes to really cutting those energy bills, YetiFoam outperforms the old-school methods.
Here’s why:
- Air sealing superpower: YetiFoam expands to fill every crack and crevice, creating a seamless thermal and air barrier under your home. No gaps = no sneaky drafts.
- Moisture & mould protection: The soil beneath your home can become drenched (especially after heavy rainfall), leading to rising damp, where moisture travels up through your floorboards. This can create the perfect breeding ground for mould, mildew, and even wood rot. YetiFoam forms a protective, water-resistant layer that blocks this moisture from entering your home, helping to safeguard your health and prevent long-term structural issues.
- Pest protection bonus: Here’s something many homeowners don’t realise: pests love accessing your home through your underfloor and wall cavities. Without proper sealing, rodents can squeeze through gaps, chew up furniture, wiring, or insulation, and even pose a health risk. YetiFoam acts as a barrier to stop them in their tracks.
- Better R-value: With a higher R-value per inch than traditional batts or foil, YetiFoam delivers superior thermal resistance.
- Long-lasting results: Unlike fibreglass batts (a popular choice for underfloor insulation), Yetifoam doesn’t sag, shift, or break down over time. Which means it keeps working year after year and comes with a lifetime performance guarantee.
In short, you get more bang for your buck, not just now but in the long run, too.
Want to learn more? Check out our enlightening FAQs page here.
Real energy savings, real comfort.
We get it — installing insulation isn’t exactly a dream renovation. But the difference it makes? That is worth celebrating.
YetiFoam customers regularly report noticeably lower energy bills within the first few months and consistently enjoy a comfortable temperature year-round. It works so well that it’s estimated that YetiFoam could save you up to 62.5% on your energy costs. These long-term savings make YetiFoam one of the best efficiency upgrades you can make for your home.
And because we tailor our insulation processes for Australian conditions, you know your home is getting the right solution.

Ready to work with Melbourne’s leading insulation service provider?
If you’re tired of battling high bills and cold floors, YetiFoam underfloor insulation could be your quiet hero.
At YetiFoam, we specialise in helping Aussie homeowners create energy-efficient, cost-effective spaces from the ground up. YetiFoam insulation is professionally installed, quick to apply, and built to last — and our team is here to walk you through the process with no pressure or jargon.
Want a customised quote?
Got questions about how it works?
Curious about how much you could save?
Get in touch today — Contact us by phone, email, or send an enquiry via our website.