1. A Minimally Invasive Installation Process
2. Benefits of Professional Blow-In Wall Insulation
3. Blow-In Insulation Material
4. Frequently Asked Questions
5. More Questions? Get in touch today for an indicative quotation!
Lacking wall insulation and don’t know where to start? EcoHome has got you covered. With more than 15 years of experience in insulation and the latest machinery we can retrofit blow-in insulation into your empty wall cavity with minimum cost and high efficiency.
Are your walls feeling too hot or cold all year round? Can you feel a draught around power points and wall vents? Are your energy bills a bit too high? It’s time to check your wall cavity for existing insulation. Don’t know how to do this? Get in touch and arrange an inspection with EcoHome today.
Blow-in insulation is a loose form of insulation that most commonly gets blown into wall cavities or roof spaces. Specialised equipment blows the loose-fill insulation via a hose directly into your wall cavity or roof space.
A Minimally Invasive Installation Process
The installation of blow-in insulation is by far the most effective and hassle-free process of retrofitting insulation into your wall cavity:
- Initial Assessment: To ensure a smooth installation process we always do an inspection first. During the inspection we will figure out whether the loose-fill insulation gets installed from the internal walls or the external walls. Most single-story houses will have suitable access from the outside, which is also our preferred and recommended approach, which minimises cost and avoids unnecessary handling of internal furniture.
- Preparing the Workspace: Once the team arrives on site, they make sure to move any obstacles away from the walls. The team will also block off wall cavity communication with the underfloor and ceiling so that the cavity enclosure is consistent.
- Drilling Holes: Most single-story houses have great access to the wall cavity from the outside. We use a thermal camera to determine the stud spacing and perfect location for drilling coin-sized holes through mortar gaps in brick walls or timber boards in weatherboard facades.
- Blowing Insulation into the Wall Cavity: Once the holes are drilled, specialised machinery allows us to blow the insulation straight into the wall cavity. A 360-degree nozzle is used to guarantee that all corners are reached.
- Thermal Camera Check: The use of thermal cameras helps us to verify a gap-free installation. This is how we can achieve high quality installation at every single job.
- Patching all Holes: All holes get patched with a suitable filler once the insulation installation is finished. The holes will be patched twice in a similar mortar colour for brick walls and a paintable timber filler for weatherboard walls.
- Tidying the Workspace: A good service includes a tidy-up at the end of every project. Our team will leave the space as it was or tidier!
Benefits of Professional Blow-In Wall Insulation
1. Non-Invasive installation process
Compared to other retrofit methods of installing insulation to an existing wall cavity the blow-in installation stands out as the least invasive installation method. There is no need to pull off any internal plasterboards or to remove the façade externally to get access to the wall cavity. The simple blow-in installation method of drilling holes and pumping in the insulation material can be done from the exterior and thereby also doesn’t interfere with normal household activities.
2. Cost savings
As rising energy prices and increased cost of living become more important to consumers, insulating your walls as part of the thermal envelope, is one effective way to save in the long run. By insulating the wall cavity, you lower the heat losses during winter and don’t need to run your heating system as often or as high to maintain a comfortable internal temperature. The same principle applies in summer when the added wall insulation will keep the house cooler, so you can run the air conditioning less often.
3. Increased comfort
Retrofitting your walls with blow-in insulation significantly enhances indoor comfort by creating a more stable and consistent indoor temperature year-round. It helps eliminate cold drafts in winter and keeps heat out during summer, making your home feel cosier and more inviting.
4. Noise reduction
Not only does our blow-in insulation have great thermal properties, but it also has acoustic properties that will reduce noise travelling through your walls. Just a few decibels less can make a substantial difference when you live on a busy road, have noisy external heating or cooling units, or a loud neighbourhood dog. Our customers also install blow-in insulation to internal walls to minimize noise travelling between rooms.
5. A greener choice
This retrofit insulation method drops the need to remove internal plasterboard walls, resulting in minimal waste and a more sustainable installation process. Insulation is one of the most effective ways to improve energy efficiency, helping you lower energy costs while reducing your environmental footprint.
Blow-In Insulation Material
Our partnership with Knauf Insulation allows us to use one of the best blow-in insulation materials available on the market. We exclusively use their Supafil® CarbonPlus loose-fill insulation for all our projects. This silicon treated insulation has extra moisture resistance, maximum thermal performance and maximum acoustic performance. It has also been tried and tested on over 5 million houses in the UK, and hundreds of our own projects here in Melbourne.
Frequently Asked Questions
What R-Value is achieved in a weatherboard house?
In a 90mm weatherboard wall cavity an R-Value of 2.3+ will be achieved. With a standard wall cavity of 50mm for double brick and brick veneer walls we achieve an R-Value of 1.3+. Knauf Supafil insulation is installed at a density of 25kg/m3.
How do we access the cavity of a weatherboard?
We drill holes externally through the weatherboards. Approximately 2-4 holes per lineal meter. All holes will be filled after installation with an adequate waterproof wood filler. The holes will then be ready for sanding and painting (by customer).
Can it be used for internal walls?
Yes. As mentioned earlier the Knauf Supafil has not only great thermal but also acoustic values and can help to improve noise transmission inside the home.
Does it reduce noise entering a home?
Yes. Wall insulation effectively reduces noise transmission through external and internal walls.
How long does it take to install blow-in wall insulation?
With EcoHome’s advanced blow-in insulation equipment, retrofitting wall insulation in a standard single-storey detached home typically takes 1-2 days, depending on the size of the building. This includes all aspects of the job—from the initial preparation and drilling to installation, hole patching, and thorough site clean-up—ensuring a smooth, efficient process from start to finish.
What’s the average cost of insulating all external walls?
The supply and installation to all external walls of a standard 3-bedroom house costs approximately $5,000.
What about moisture collection in the wall cavity after installation?
If installed correctly, blow-in insulation will help with regulating internal temperatures and reducing the risk of mould growth. Knauf Supafil has a special silicon coating that makes it very well suited for external (and internal) wall applications.
More Questions? Book your inspection here!