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⚡ Part of the No Gap Group - Insulation. Energy. Interiors
⚡ 10,000+ Jobs Completed Annually
⚡ VEU Program Participant
⚡ EEC Corporate Member
⚡ Servicing Victoria & New South Wales
⚡ Upfront Pricing — No Hidden Fees. Ever.
⚡ Licensed & Insured Installers
⚡ 300+ Five-Star Google Reviews

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Kingspan Insulation Guide: Kooltherm, AIR-CELL & Applications

When it comes to keeping a building comfortable, efficient and safe, Kingspan Insulation is a name that turns up across residential, commercial and industrial projects alike. As a global leader with a wide range of products, Kingspan brings together two very different but complementary technologies under one roof: rigid phenolic boards and flexible reflective insulation. Whatever your build involves, chances are there’s a Kingspan product built specifically for it.

This guide walks through what the Kingspan range actually offers, how it breaks down, and where each product tends to shine — written for homeowners, builders and specifiers alike.

Kingspan Kooltherm: High-Performance Rigid Insulation Boards

Kingspan Kooltherm is the rigid side of the business — a family of phenolic insulation boards known for delivering strong thermal efficiency without needing a thick cavity. Unlike standard polystyrene insulation, Kooltherm’s phenolic core achieves a notably low thermal conductivity rating, which means a thinner board can do the same job as a much bulkier product. That makes it a popular choice for new build projects and renovations where cavity space is tight.

Kooltherm K3 (Cavity Board)

Kooltherm K3 is a cavity board designed for masonry cavity walls, helping create continuous insulation across the building envelope without compromising the cavity’s drainage function. Check the Kooltherm K3 product page for full specs, with pricing from $89.50 m2 inc GST.

Kooltherm K8

This general-purpose rigid board is suited to floors, walls and ceiling insulation applications where a slim, top-tier performing product is needed. See the Kooltherm K8 product page for full specs, with pricing from $95.20 m2 inc GST.

Kooltherm K10 G2 Soffit Board

Supplied as a soffit board, this product is designed for use beneath suspended floors and other soffit applications where moisture resistance and thermal performance both matter. Visit the Kooltherm K10 G2 Soffit Board product page for full specs, with pricing from $102.75 m2 inc GST.

Kingspan Kooltherm K12 Framing Board

As a framing board insulation option, the Kingspan Kooltherm K12 Framing Board fits neatly into internal walls and timber or steel framing, offering a thermal break between frame and lining without adding bulk. Head to the Kingspan Kooltherm K12 Framing Board product page for full specs, with pricing from $84.90 m2 inc GST.

AIR-CELL: Flexible Reflective Insulation

Alongside its rigid boards, Kingspan also manufactures AIR-CELL Insulation — a family of flexible, reflective products built around a cell insulation core technology that reflects radiant heat rather than absorbing it. Recognisable by its silver finish, AIR-CELL is a lightweight, easy-to-handle alternative to bulk insulation and a standard roofing blanket.

AIR-CELL Insulbreak

AIR-CELL Insulbreak is one of the most widely used products in the range, suited to roof insulation applications where reflective performance is the priority. Explore the AIR-CELL Insulbreak product page for full specs, with pricing from $3.85 m2 inc GST.

The broader AIR-CELL family also includes AIR-CELL Permicav XV, a cavity wall wrap option, AIR-CELL Permishield XV for wall wrap applications needing extra durability, and Air-Cell Insulshed, developed specifically for shed insulation and outbuildings.

Where It's Used

Roof Insulation, Walls & Applications

Kingspan’s combined range covers roof insulation on both pitched and flat roofs, ceiling insulation and attic insulation in roof cavities, and wall applications from cavity walls through to partitions and framing. It’s also a common choice for commercial insulation applications, including data centres and other performance-critical projects, where consistent thermal control matters.

Slab Edge Insulation

This is another area where Kingspan’s rigid boards perform well, fitted around the perimeter of a concrete slab to reduce heat loss at one of a building’s most common thermal weak points.

Fire Performance & Fire Protection: Built-In Fire Safety

This is a key consideration across the Kingspan range, with products engineered to support fire protection requirements in both residential and commercial settings. This focus, combined with strong thermal insulation performance, is part of why Kingspan products are so widely specified across different building types.

Kingspan GreenGuard & Planet Passionate: Sustainability Commitments

Kingspan’s sustainability commitments run through initiatives like Kingspan GreenGuard and the wider Planet Passionate program, which set out targets around recycled content, carbon reduction and responsible manufacturing. For those planning a build or renovation, this means choosing Kingspan Insulation also supports broader energy efficiency and environmental goals, not just performance on a single project.

Meeting NZS 4859.1 and Other Standards

For reflective insulation products like AIR-CELL, meeting this standard helps confirm tested thermal performance, giving specifiers and installers confidence that the product will perform as claimed once installed, whether that’s sealed with insulation tape at every join or fitted with a vapour barrier where condensation control is needed.

Kingspan Insulation Supplier: Technical Team, Supply Chain & Support

Working with a trusted supplier matters as much as choosing the right product. A strong supply chain ensures consistent stock availability, while access to Kingspan’s specialists can help with product selection, thermal calculations, and guidance on meeting local building code requirements — particularly useful for larger commercial builds or anything outside a standard residential application.

Where to Buy: Trusted Insulation Suppliers & Product Pages

As an established Kingspan stockist, No Gap Insulation supplies a range of Kooltherm and AIR-CELL products for residential, commercial and specialised applications. Browse our complete Kingspan Insulation range to compare available products, then visit individual product pages for specifications, thermal performance and current pricing.

Final Thoughts

From Kooltherm’s high-performance rigid boards to AIR-CELL’s flexible reflective insulation, Kingspan offers solutions for a wide range of residential and commercial projects. If you’re ready to compare available products, browse our complete Kingspan Insulation range to find suitable solutions for your project.

FAQS

Rockwool is a bulk insulation, while Kingspan's Kooltherm range is a rigid phenolic board and AIR-CELL is a flexible reflective product, so the comparison really comes down to the application. Kooltherm tends to win where cavity space is tight and a slim, high-performance board is needed, while Rockwool suits standard stud cavities where bulk fill is the priority. Many builds actually combine bulk insulation with a Kingspan product for the best overall result.
Kingspan's Kooltherm range uses a phenolic rigid foam core, which is engineered specifically with fire performance in mind and designed to support fire protection requirements in both residential and commercial settings. As with any building product, correct installation matters, so following the manufacturer's fixing and clearance guidelines is what ensures it performs safely as intended.
It depends on the product and the application. Some AIR-CELL products are supplied as a 3-in-1 insulation, combining a radiant barrier, a vapour barrier and a breather membrane in one layer, while other installations may need a separate vapour barrier fitted alongside the insulation to manage condensation properly. It's worth checking the specification for the exact product and climate zone before installing.
Thermal bridging happens where a gap in the insulation layer, often around framing, allows heat to bypass the insulation entirely. Products like the Kingspan Kooltherm K12 Framing Board are designed to sit within the frame itself, creating a thermal break between the frame and the internal lining rather than leaving it as an uninsulated weak point.
Kingspan runs sustainability commitments through initiatives like Kingspan GreenGuard and the broader Planet Passionate program, which set targets around recycled content, carbon reduction and responsible manufacturing. For anyone weighing up environmental impact alongside performance, these programs give some reassurance that the choice supports broader sustainability goals too.
Smaller AIR-CELL installations, such as fitting flexible reflective insulation in a shed, are often manageable for a confident DIYer. Larger or more technical jobs, like fitting Kooltherm rigid boards around a slab edge or within framing, generally benefit from a professional installer, or at least a chat with Kingspan's specialists first to confirm the right product and fixing method for the application.
Yes. Reflective products like AIR-CELL are tested against standards such as NZS 4859.1, and Kooltherm's rigid boards are manufactured to support local building code and thermal performance requirements. Checking the relevant product page for compliance details, or speaking with the technical team, is the easiest way to confirm a product meets the requirements for a specific project.

What our customers say about us?

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John Fraser profile picture
John Fraser
1 year ago
Arthur and team were great. From quick turnaround on quotes to sending the team up and getting the job done in a day. It's already feeling better in the house.
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Asha d'Arville
1 year ago
We've had a really good experience with NoGap. After struggling to even get calls back from other providers, Arthur at No Gap was speedy with a quote, communicative, and really helpful in setting us up for our insulation removal and replacement. The work team were lovely, worked incredibly hard, and were on time and cleaned up after themselves. Cannot fault the team, and the house is already feeling more comfortable, and even more quiet with the new insulation.
Very happy with the service. Arthur was easy to deal with, and the team that came out provided and installed roofing insulation in a thorough, professional and efficient manner.
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Theo Gidis
1 year ago
Helpful salesperson (Arthur), quick, efficient installation, job done very well, price very competitive. Can’t ask for anything more from a supplier/installer. Thanks Arthur and team!
No Gap Insulation - We are so happy with the service provided by No gap insulation. Arthur was especially help from the start to the completion of the service, stepping us through every decision. Highly recommended.
Response from the owner
1 year ago
Hi, we really appreciate you taking the time to leave a positive review! Your feedback means a lot to us as we continually strive for excellence. Thanks for your recommendation!
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geoff grace
1 year ago
Thank you for the assistance
Response from the owner
1 year ago
Hi Geoff, we really appreciate you taking the time to leave a positive review! Your feedback means a lot to us as we continually strive for excellence. Thanks for your recommendation!
Andrew Tan profile picture
Andrew Tan
1 year ago
We recently engaged No Gap Insulation and found the whole process, from quotation through to installation, absolutely seamless. Arthur was my single point of contact throughout — he was professional, responsive to my queries, and made everything straightforward. The work involved removing and disposing of the existing insulation batts and installing new ones. The team was very thorough, and I appreciated being shown clear before-and-after photos to see the difference. Overall, an excellent experience — highly recommended.
Response from the owner
1 year ago
Hi Andrew, we really appreciate you taking the time to leave a positive review! Your feedback means a lot to us as we continually strive for excellence. Thanks for your recommendation!
Great service overall. Arthur and his team with Jacob were very efficient and professional.
Response from the owner
1 year ago
Hi Thibault, we really appreciate you taking the time to leave a positive review! Your feedback means a lot to us as we continually strive for excellence. Thanks for your recommendation!
We highly recommend the guys at No Gap. Good price, great service. After one month we can already see the savings on our gas bill and feel the difference it makes inside. We should have done this years ago..
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Response from the owner
1 year ago
Hi Neels, we really appreciate you taking the time to leave a positive review! Your feedback means a lot to us as we continually strive for excellence. Thanks for your recommendation!

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