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When researching high-performance PIR insulation boards, you’ll quickly come across two of the UK’s biggest names: Kingspan Thermapitch TP10 and Recticel Eurothane PIR. Both are trusted, industry-leading options for pitched roofs, floors and walls — but are they actually different products, or are they essentially the same board sold under different brand names?
In this detailed comparison, we’ll explore the similarities and subtle differences between Kingspan TP10 and Recticel Eurothane PIR insulation boards, so you can choose the best option for your next project.
PIR (Polyisocyanurate) is a type of rigid foam insulation used widely in roofs, walls, and floors. PIR boards offer excellent thermal efficiency, strength and moisture resistance. Because they provide low U-values with minimal thickness, PIR boards such as Kingspan TP10 and Recticel Eurothane have become the go-to choice for builders, architects and homeowners looking for energy-efficient insulation.
Kingspan Thermapitch TP10 is one of Kingspan’s most popular PIR roof insulation boards. It is specifically designed for pitched roof applications under tiles or slates. With its low thermal conductivity of 0.022 W/m·K, TP10 provides excellent thermal resistance in a compact board thickness, making it ideal for energy-efficient homes.
Kingspan TP10 is BBA certified and performs exceptionally well between rafters in both new-build and refurbishment pitched roofs. It’s known for consistent quality and wide availability across UK merchants.
Recticel Eurothane GP (General Purpose) is a versatile PIR insulation board suitable for multiple applications — including walls, floors and roofs. Like TP10, it provides the same thermal conductivity of 0.022 W/m·K and similar compressive strength and handling properties.
Eurothane is considered a cost-effective alternative to Kingspan TP10. Many contractors use it interchangeably, as the boards perform almost identically in real-world conditions.
| Feature | Kingspan TP10 | Recticel Eurothane PIR |
|---|---|---|
| Thermal Conductivity | 0.022 W/m·K | 0.022 W/m·K |
| Core Material | Polyisocyanurate (PIR) | Polyisocyanurate (PIR) |
| Facing | Foil on both sides | Foil on both sides |
| Board Size | 2400mm × 1200mm | 2400mm × 1200mm |
| Main Application | Pitched roofs under slates or tiles | General purpose (roofs, walls, floors) |
| Certification | BBA Approved | BBA Approved |
As shown above, Kingspan TP10 and Recticel Eurothane PIR insulation boards share identical thermal conductivity, thickness options and facing materials. In practice, their performance is the same — both will achieve the same U-values and energy efficiency results when installed correctly.
Yes — for most practical applications, they are equivalent PIR insulation boards. They are both high-density rigid PIR boards with the same thermal properties and foil facings. The key difference lies in branding, marketing and pricing.
From a building performance point of view, there is no measurable difference between the two in insulation value or performance. Many professionals consider Recticel Eurothane PIR a direct alternative to Kingspan TP10.
Both Kingspan TP10 and Recticel Eurothane install in the same way. To achieve the best thermal performance:
Since both products share the same thermal conductivity, your choice often comes down to cost and stock availability. Recticel Eurothane PIR is frequently available at a slightly lower price, offering identical performance to Kingspan TP10 for less — making it an excellent value option for contractors and homeowners alike.
When comparing Kingspan TP10 vs Recticel Eurothane PIR, the conclusion is simple: they are essentially the same high-quality PIR insulation board with identical thermal performance. The only differences are branding and price.
If your project specifies a PIR board with a conductivity of 0.022 W/m·K, you can confidently choose either. For many buyers, Recticel Eurothane PIR offers the same results as Kingspan TP10 — at a more competitive price point.
View our full Kingspan product range here: Kingspan Insulation Collection .
Both Kingspan and Recticel deliver reliable, high-performance PIR boards that improve energy efficiency, reduce heat loss and help meet UK building regulation standards. No matter which brand you select, you’re choosing proven insulation technology that performs.
