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
What our customers say about us?














