Prevents Conduction: Blown-in insulation adds a thick layer of protection that slows heat transfer through ceilings and walls, helping keep indoor temperatures steady in London even when outdoor conditions swing.
Professional Blown-In Insulation in London, ON
Let Our Insulation Experts Show You The Many Benefits Of Our High Performance Insulation.
Blown-in (or “loose-fill”) insulation is one of the fastest, most cost-effective ways to make your London home more comfortable and energy efficient. Our experienced team uses a hose system to gently “blow” insulation into your attic or wall cavities, creating a thick, even thermal blanket.
Whether you are topping off thin attic insulation, insulating a newly finished space, or improving comfort in an older home, Koala Insulation of London can help.
Get a Free Estimate
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Trusted
Blown-In Insulation Installers in London
London’s muggy summers and snow-belt winters can make your home feel uncomfortable and your furnace work overtime. The surprising part? A large share of homes here still rely on a thin, decades-old layer of attic insulation that falls well below current recommendations.
Where blown-in insulation shines:
Attic floors that need a fast, affordable R-value boost.
Knee walls & sloped ceilings for those hard-to-reach areas.
Wall cavities, in select retrofits, following industry best practices.
A Superior
A Smarter Thermal Upgrade
Blown-in insulation offers London homeowners and businesses a powerful way to upgrade comfort and efficiency. Loose-fill products create a continuous thermal blanket over your attic floor or inside cavities, working like traditional insulation while delivering fast, even coverage over new or existing material.
These capabilities define the insulation type:
Reduces Air Infiltration: With Koala’s air sealing working alongside it, the insulation layer helps shut down the framing and wiring gaps that let outside air slip into homes in London.
Limits Condensation: Better attic R-value plus preserved ventilation means fewer cold surfaces where moisture can condense, protecting both your London home and the insulation itself.
Advantages Of
Blown-In Insulation for Homes in London
There is a reason blown-in leads the list for attic upgrades in London: it is quick to install, plays well with existing insulation, and helps deliver lower heating and cooling bills plus all-season comfort. More key advantages:
Improved Air Quality
When combined with attic air sealing, blown-in insulation helps cut down the amount of dust and outdoor pollutants that can sneak in through gaps around light fixtures, plumbing penetrations, and attic access points in homes in London.
Water & Fire Resistance
The blown-in products we install are designed with fire safety in mind. Proper installation around recessed lights, chimneys, and other heat sources is critical, and our team follows local codes and manufacturer guidelines to help keep your London home safe.
Pest and Wildlife Protection
Our blown-in insulation is treated with compounds that help deter insects and pests from nesting in your attic. Only cellulose blown-in insulation includes these pest-resistant additives, and when combined with proper air sealing, it helps create a cleaner, more comfortable attic environment for your London home.
Soundproofing
A thicker attic blanket also means a quieter home. Blown-in insulation muffles exterior noise and softens sound transfer between floors, a difference you will notice whether the noise comes from the street outside your London home or the bonus room upstairs.
Environmentally Friendly
Green credentials come standard: the blown-in materials we install are made from recycled content, and the efficiency they add does the rest. Studies have shown insulation can cut heating and cooling energy consumption by up to 40%, which means a smaller footprint for your London home.
London’s Simple 4-Step
Blown-In Insulation Process
Free Attic Assessment
It all starts with a free visit: our team evaluates your current insulation levels and overall efficiency so recommendations fit your London home, not a template.
- Protect & Prep the SpaceStep one is protecting your home and setting the stage: covered floors and walkways, safe attic access, and depth markers placed across the space. When ventilation calls for it, we install eave baffles so the new insulation never chokes off soffit airflow in London.
Koala Difference: Thorough prep is why our installs in London perform properly and why you will not find a layer of dust through the house afterward.
- Seal Key Leaks & Set Up EquipmentNext, we hunt down air leaks. Using thermography leak detection, our crew locates and seals the gaps around plumbing stacks, wiring, recessed lighting, and attic hatches that quietly drain efficiency from homes in London.
Koala Difference: We do not just “add fluff.” By combining blown-in insulation with strategic air sealing, we help you get more comfort and value out of every inch we install in London.
- Install to the Target DepthOur crew blows insulation evenly across the attic floor, building to the specified R-value while working material into corners and around obstructions. Depth markers are checked continuously so the finished blanket is consistent from eave to eave in London.
Koala Difference: Coverage is everything. We take the time to verify depth and consistency so your London home is not left with “thin spots” that reduce performance.
- Clean the Site & Review
Cleanup is part of the job, not an afterthought in London. We vacuum and tidy the space, remove every piece of equipment, confirm the attic access seals properly, then review the results with you, photos included when available.
Koala Difference: The relationship outlasts the project. Koala Insulation of London stays available for questions and can point you toward rebates or tax credits you may qualify for.
Get a Quote
Ready to get your project started? Work with the most experienced blown-in insulation contractors in London, ON. Schedule a free quote with Koala Insulation of London today!
What to Expect
In 5 Easy Steps
In 5 Easy Steps
What to Expect
In 5 Easy Steps
Schedule Your Free Evaluation
Contact your nearest Koala Insulation Location, recognized as the #1 trusted insulation expert nationwide. We will discuss your needs and schedule an appointment to provide a free evaluation.
Home Efficiency Assessment & Estimate
One of our friendly insulation experts will perform a thorough home efficiency assessment. Your insulation expert will then review the assessment findings, the science behind these findings, and why any changes are needed. Lastly, your insulation expert will provide the best option that fits your home efficiency needs and your budget.
Schedule Your Insulation Service
We will schedule your insulation service for the soonest availability that fits your schedule because we understand that your home insulation is a priority!
Installation
Our team of highly skilled insulation technicians will install your premium insulation solution in as little as two hours. We treat your home like our own and take time to leave it cleaner than it was before.
Post Installation Inspection
Contact your nearest Koala Insulation Location, recognized as the #1 trusted insulation expert nationwide. We will discuss your needs and schedule an appointment to provide a free evaluation.
Enjoy Your Comfortable & Efficient Home
Enjoy a more efficient home with lower energy bills and improved comfort year-round. Enjoy your improved home stress free knowing that Koala Insulation stands behind their work! Reach out to your Koala Insulation team anytime for support.
Benefits
Enhanced Comfort
Energy Savings
Quality Materials
Eco-Friendly Options
Enhanced Comfort
Stay cozy inside, no matter the weather outside.
Energy Savings
Save on your energy bills while keeping your home comfy all year.
Reduced Noise
We use top-quality insulation to give you lasting results.
Eco Friendly
Choose insulation that’s better for your home and the planet, such as solar-powered attic fans.
Your Satisfaction is
Our Top Priority
Do not just take our word for it. London homeowners who have worked with us tell the story best.
Michael Buzzelli
00:39 23 Sep 26
Excellent service. Meticulous, methodical, thorough and very reasonable on price point. Highly recommend.
Johnny Ferguson
00:40 15 Sep 26
Called for removal and installation of new insulation. Was told I didn’t need to do that and was surprised by the honesty and integrity. Very rare. Would highly recommend.
andrew campbell
15:19 06 Sep 26
Dan came out on short notice and provided the client experience that anyone could hope for. As an engineer, he was able to give insight that allowed me to make an informed decision.
10/10–no notes. Thanks again, Dan!
10/10–no notes. Thanks again, Dan!
Ripon Singh
21:15 31 Aug 26
Xan and Aaron were great. Very knowledgable and reasonable!
Bob Stone
19:07 25 Aug 26
Very professional, highly recommended
Deborah Arts
18:04 21 Jul 26
Professional, punctual and efficient. Explained the process, facilitated the rebate with Enbridge, completed the work promptly and even cleaned up after themselves. I would highly recommend them for all your insulation needs
Thomas Noonan
20:53 20 Jul 26
Attic insulation
They did a great job excellent clean up no mess. Showed us the pictures big difference from before to after. Work was completed highly recommended Koala Insulation to everyone.
They did a great job excellent clean up no mess. Showed us the pictures big difference from before to after. Work was completed highly recommended Koala Insulation to everyone.
Travis Goettl
21:15 01 Jun 26
Xan was great with the assessment, detailing out the issues we had and the process going forwards. He helped us navigate the rebate system and the price point was great as well. Once we had a separate issue dealt with, we were able to book very quickly and his crew were timely and clean!
Zoltri Group Rentals
18:42 13 Apr 26
Great friendly service with Xan and his installers. Had blown in attic insulation added as well as spray foam done. Both trucks well equipped, clean. Took every effort to cover work area and clean up after the job was complete.
Fair pricing and quick service and took the time to explain work thoroughly and provided before and after pictures. Will use his services again on other properties.
Fair pricing and quick service and took the time to explain work thoroughly and provided before and after pictures. Will use his services again on other properties.
christine bullas
12:19 18 Mar 26
Amazing job. Clean and efficient. Friendly staff. Initial assessment was very informative. Given different price points based on level of service we wanted. And informed of rebates available dependent on what level of service we choose. Would recommend
What Makes
Koala Different?
Locally owned, nationally backed: Koala Insulation of London is part of a network spanning the U.S. & Canada, pairing hometown service with proven systems.
Free, honest assessments: Recommendations start with a real evaluation of your London home, not a one-size-fits-all sales pitch.
Air sealing included in our thinking: Thermography-guided leak sealing means your new insulation performs to its potential.
Rebate and credit guidance: We help you identify tax credits and utility rebates that may apply to your project.
Get a Quote
Ready to get your project started? Work with the most experienced blown-in insulation contractors in London, ON. Schedule a free quote with Koala Insulation of London today!
Frequently Asked Questions
Blown-In Insulation FAQs
Get all your questions answered by our local experts. If we didn’t address your question here, give us a call at 226-547-0332 or schedule a free quote today!
What Does Blown-In Insulation Cost in London?
How much blown-in insulation costs is one of the first questions we hear, and the honest answer is that it depends on your home.
Three things drive the number: how large the home and attic are, which insulation material is used, and how much work the installation itself involves, including access, prep, air sealing, and whether old insulation needs to come out first.
Whatever the scope, the upgrade works in your favor over time: better attic coverage means less heat loss and lower heating and cooling bills.
Before you budget, check on incentives: many provincial and municipal programs and utility providers offer rebates that help bring the net cost down. The only precise number is one measured on site. Schedule a free assessment and we will price your exact attic in London, not an average.
Is Blown-in Insulation Better Than Rolls?
For attic floors, blown-in is usually the stronger choice. A blown layer is continuous, wrapping over joists and around obstructions, while rolls leave the small seams and voids that cause drafts and uneven temperatures. Real-world performance follows coverage, and coverage is exactly what blown-in delivers for your London home.
How Much Blown-in Insulation Do I Need?
Three factors decide it: the size of the space, the required insulation depth, and your geographic location (see the map below). Recommended attic R-values track climate, with colder areas needing more depth against heat loss and warmer areas needing enough insulation to keep heat gain out. Multiply attic square footage by the target R-value and you have what consistent coverage will take. For homes in London, Ontario energy efficiency programs commonly recommend topping up attics to about R-50 to R-60.
Rather than estimating, professional installers work from climate-zone guidelines, your existing insulation depth, and manufacturer coverage charts. That approach matches depth to the recommended R-value for the region, builds in allowance for settling, and prevents the coverage gaps that undercut performance. The diagram below shows how recommended attic insulation levels change by geographic region, helping homeowners understand why insulation needs differ from one location to another.
Insulation Education
Learn why insulation is critical to your home’s energy efficiency and your family’s comfort.
Learn More
Get a quote
Ready to start your insulation project? Get a free quote from your local Koala Insulation team today.
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