Why should I insulate my walls? What is the insulation installed?

Research shows that 30% of heat loss occurs through your walls. If you have already installed ceiling and underfloor insulation – think of it like a tomato sandwich – the heat is going to squeeze right out the walls like a sliced tomato!

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The glasswool insulation we use exclusively for our system is Supafil® Frame – made using recycled glass and sand. In addition, the product is silicone treated to provide the required performance and enhanced durability.

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Supafil® Frame is manufactured by Knauf Insulation – one of the world’s largest and leading insulation manufacturers. Working with Knauf Insulation, we have been able to prepare comprehensive systems based on world-class processes, and applied specifically to New Zealand conditions.

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Supafil® Frame is non-combustible.

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Yes, Supafil® Frame provides BOTH acoustic and thermal performance.

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Where installed, Supafil® Frame delivers high R-values in comparison to other exterior wall insulation types R2.6 for standard 100mm (4 inch) timber frame and R3.6 for brick veneer.

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Supafil® Frame is a dry glasswool, unlike other expanding foam type systems that is injected wet. Also there is no risk of potential noxious fumes.

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CodeMark and BRANZ How we do it

CodeMark is an unchallengeable form of product assurance.

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BRANZ are an independent New Zealand based research organisation providing impartial evidence-based advice on critical issues in building and construction in New Zealand, to industry and government.

 

They provide testing and consultancy services that drive better performance. They undertake and invest in research by BRANZ science teams and external research agencies to unlock new knowledge, addressing current and emerging challenges of the New Zealand built environment.

 

BRANZ are approved to issue CodeMark Certificates in New Zealand.

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We have selected BRANZ due to their specific knowledge and science in relation to New Zealand construction methods over the decades.

 

The ecoinsulation Blow-in Retrofit Wall system is the only system on the market that has a CodeMark issued in NZ by BRANZ.

 

BRANZ have applied an increased focus on how to manage liquid water ingress relative to the New Zealand Building Code, together with cladding systems assessment criteria in the marketplace.

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Homes built before 1978 are likely to have no insulation in the external walls.

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WEATHERBOARD / DIRECT FIX

Yes, as long as there is building paper present (on the outside of the frame and under the weatherboards).

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A typical weatherboard house with a 100mm frame (in old words 4-inch framing) can achieve R2.6.

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R2.6 is well above the minimum R-value for new houses constructed in Zones 1 and 2, and meets the requirements of new homes in Zone 3 – (South Island and Central plateau).

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We install from the inside. Any holes drilled through the outside produce a weak point which could fail over time. Additionally, it would put a hole through the building paper which must be present.

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BRICK VENEER

Yes, based on the design of the house we can fill the wooden frame together with the additional cavity.

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A brick veneer cavity is typically 100mm plus 40mm, resulting in an R-value of R3.6.

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We can install from the inside or outside.

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We apply a Masonry Protection Barrier to the outside face to treat the bricks, the barrier is designed to prevent liquid water penetrating the brick.

 

For houses with brick veneer external cladding we will also need to ensure that the outside face of the brick is sealed as most brick systems are porous. To achieve this, we will need to check the specific condition of the brick work and we will need to apply a specific sealant to the brick work.

 

Our quotation will outline what needs to be done to ensure effectiveness of the sealing system, and once installed the maintenance required to ensure that seal continues to perform.

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STANDARD QUESTIONS

We drill 25mm holes in the wall so we can insert our directional nozzle to ensure an adequate fill in each cavity.

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We offer you the choice of patching the holes using a patented system resulting in an almost good as new finish. This can also be colour-matched to existing paint as well. Let us know at the time of quotation what you require.

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Yes, our installers and assessors are trained and confirmed as being competent to ensure all steps in our processes meet the CodeMark requirements.

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A typical New Zealand three-bedroom home (weatherboard or brick veneer) can be insulated in less than a day by an Accredited Installer team. It’s quick, clean and doesn’t affect the structure or look of your house.

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Process flow end to end Installation

When you contact us, we will need to get important information about your home so please have this information ready for us:

 

• The address, age and condition of the property
• Have there been any alterations or additions to the property?
• Do you have a set of plans available of the house as it is today?
• Have the electrical systems been upgraded – rewired – if so, when?
• What is the cladding type – ie weatherboard, stucco, brick veneer?
• Is the building connected structurally to your neighbour (i.e. is it a unit or apartment)?

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Once we have reviewed the information you provide and confirmed that the property meets our systems requirements, we will arrange a time to visit and assess your property.

 

Please allow about 1.5 hours for the time we will need to be on site. We will need to access the ceiling, underfloor, the exterior and every room in the house.

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There is a large amount of information we need that we can only find out by assessing your house. This includes:

 

  • • The condition of the structure and external cladding
  • • The condition of the internal linings including any signs of moisture in or on your walls
  • • The plumbing and gas in your external walls
  • • The condition of your electrical systems
  • • The ventilation systems
  • • The structure of your property.

 

Your knowledge of the house including any works completed, receipts, compliance certificates or building reports relating to the house will be useful in our evaluation.

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One of the most important items our assessors will need to ascertain is the presence or otherwise of building paper (in direct fix cladding houses) and existing insulation. While this can sometimes be identified through visual observation in the ceiling cavity or subfloor space, in some situations we may require to remove an electrical socket or drill a small hole in a wardrobe/cupboard that is adjacent to an external wall.

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As we assess the house, we may come across an item which means we cannot proceed any further – that may be an item that needs maintenance or fixing before we can install; or the design/structure of the property does not enable us to complete the installation -we will let you know and explain this to you.

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We will also let you know if there are parts of the house that we cannot insulate.

 

Also, if you are planning to tile your walls or make modifications which prevent access to the external wall we recommend installing insulation first.

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We need to access each cavity in the walls. This means there may be 3 or more holes up a standard 2.4m wall, and at approximately every 600mm.

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Our insulation can be installed around standard pipes and electrical devices. Our assessment will confirm suitability.

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Once we are sure your home is suitable for installation of external wall insulation, we will complete a quote. This will outline the costs associated with the installation, including a breakdown of estimated costs to complete a Building Consent Application (where required) for you. We will not use pressure sales tactics to strong-arm you to make a decision.

 

We would rather you take your time as it is an important investment in your home and can be disruptive when we complete our installation.

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Yes, with your authorisation, we can lodge an application on your behalf.

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This does vary from council to council – we will include this in your quotation.

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This will also vary between councils, but they typically should not take longer than 20 days.

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On the day of installation our team will come to your property and double-check that everything we have checked earlier has not changed, or if a new item has presented. We will need access to power, and we will have a hose running into your home from our truck to the area we are working in.

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We will need to drill holes using standard drills. Our installation blowing machines sound like big vacuum cleaners. They will be inside our vehicles, and we will run long hoses. So yes, there will be some noise, but it is not excessive.

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Yes, please. We will need to have access to all the external walls to be treated so we ask you to arrange to move all furniture and paintings away from those walls before we get there. Removing curtains is also a good idea, and whilst we are not that messy, we can blow some loose glasswool Supafil® Frame into the rooms we are installing in.

 

We recommend children and pets are not present on the day.

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We will tidy up after ourselves, including completing the works to patch and tidy those holes if included in the quote.

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We have checks and processes we undertake throughout the process. In addition, at the end of each job we complete a post installation audit. Our Auditor (or team leader) will confirm everything was completed as planned and explain to you any areas not insulated, and if anything was different from what was quoted.

 

We will also leave or provide you with information regarding our installation warranty (by hand, mail, or email) together with some important items for you to ensure that the property is maintained properly. We may also want to come back and audit the property in the future.

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AFTER INSTALL

The weathertightness of your house is important. This means that it is important you maintain the condition of the property at all times to ensure water cannot penetrate through the cladding system. Poor maintenance, holes, rot and cracks can result in unwanted water penetrating the external wall cavities.

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If water is present in the wall it is advisable to remove and replace the insulation in that area.

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Any moisture present within the insulation will mean that insulation should be removed. We can arrange that. We will need to confirm when installation was completed, and if the condition of the building has not been maintained upon which the warranty was issued may not be valid. If the building has been maintained and there are some other failures then the provisions of our limited warranty may apply.

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15 years. The details of our warranty are attached to our quotations and also available on our website.

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